## Photovoltaics

Using photovoltaic systems to heat hot tubs can be a very simple and very cost effective way to be more friendly to the planet.  Since a hot tub, by its very nature, is seen as an extravagant item, it pays to make the system you use to heat it as efficient and environmentally friendly as possible.

## A Photovoltaic System

Brandon Said:How can i model a battery in Photovoltaic system in a software program? ?We Answered:I've never used photovolatic cells in any projects, but I'd assume it'll show up as a relatively fixed voltage with a relatively high internal resistance, one that's variable depending on the amount of light available.Danielle Said:how do a photovoltaic system convert sun rays to electric energy?We Answered:Photons hit the solar panel and are absorbed by semiconductors. Electrons are then knocked loose from their atoms, allowing them to flow through the material to produce DC electricity which can be converted to AC by means of an inverter.Edward...

## A Solar Panel

Danny Said:what kind of solar panel would i need to charge i car battery?We Answered:More watts is more power, because watts are a measure of power. Most solar panels produce the right voltage to charge a car battery, but you should really have a charge controller too. See the source for some ideas.Derek Said:Can I connect a solar panel charger to my car battery without interfering with the alternator?We Answered:High wattage High temperature Diodes is your answer. One on wire from solar panel charger to battery's positive. Another on wire from alternator to battery's positive. Current will only from solar panel charger and...

Norman Said:PHYSICS: How large a collecting area of solar cells would be necessary to produce a 1-gigawatt power plant?We Answered:The energy received by 1 m² = 1400 watt Energy required to be produced = 1 giga-watt = 1 x 10^12 The area reqd. = 1x10^12 / 1400 = 714285714 m² .................. ....................... ...........= 714 .28 Km² ................ ....................... ...............===========Alan Said:What happened to the 2002 promise of super efficient (up to 70%) solar cells using indium gallium nitride?We Answered:Howdy, I'm not sure, this is the first I've heard of such a break through. Chances are it didn't work...

Ken Said:What are some disadvantages and advantages of solar energy?We Answered:Advantages: -Harnesses the natural power of the sun. -No emissions. -Creates it's own energy (basically) -Can be used to power Solar Cookers (make your own food without any wood to burn or oil [becoming popular in many African countries where cooking resources are sparse]) Disadvantages: -Very expensive for the amount of energy received and distributed throughout the power grid. -The technology is very young (maximizing the amount of energy harnessed, amplifying the rays to reuse and thus amplify the power of the rays, etc. etc.). -Terribly inefficient when compared to the output of Nuclear power. Wind and Solar power...

## Best Photovoltaic Panels

Hector Said:starting new, solar or wind energy business?We Answered:I have some ideas on how to make the world a lot greener with water power. Email me and i'll tell you howDwight Said:science fair solar energy?We Answered:I just wonder if you could reflect light down a dark tube and onto a solar cell at the bottom and power the motor. This could show how maybe solar panels do not have to be mounted on roofs if light can be reflected onto them somehow. Here is a good video reference for the direction solar power is taking right now....

## Best Solar Panels

Wallace Said:What is the best Solar Panels to power your home with?We Answered:Any commercial-grade solar panel will do the trick. The bigger question is how much you need, and whether you need storage. If you plan to go off-the-grid, you will need to design a large enough system to provide both for normal use and sufficient storage to carry you through periods of no sun - and overnight, of course. The rule-of-thumb is approximately 3 x your peak load, with sufficient storage for a full 24 hours of no sun. Assume your refrigerator uses an average of 800 watts per...

## Bp Solar Panels

Pamela Said:DrFred&Crabby,Solar Panels and Elect cars have been out 40 years, so it's oil Greed?We Answered:Yes, my answer to this question which IS a question is yes. Of course it's greed, why do you think fuel prices Still didn't and haven't went down, even though the oil wells in the ocean south of the south-eastern U.S. that WERE broken from hurricane Katrina which is the reason why the fuel prices went up which was to fix the oil wells, HAVE in fact been fixed for a long time now! Regular Gasoline should be no more that \$1.00 per gallon and Diesel...

## Build Solar Panels

Karen Said:Why are there government contracts in place to build solar panels in China?We Answered:They may be going to India now.Edith Said:where to get plans to build solar panels at home?We Answered:If you want to make solar panels and get an energy rebate, this link will show you how. http://solarpanels.infoworldhelp.com good luck. Chris CordobaSally Said:How to build solar panels?We Answered:You cannot build solar panels. I believe what you want to do is build a solar system for your house. If you have a background in electrical system you could do it yourself. Otherwise you would be ahead to have professionals...

## Building Integrated Photovoltaic

Derrick Said:do u know any Building Integrated Photovoltaic Simulation softwares?We Answered:Energy PlusFelicia Said:building integrated photovoltaic... detail?We Answered:You are seeking a more technical answer than you are likely to get in this limited space. Check archives of Mother Earth News, they ran several articles on this issue in the past 3 years or so. Google BIPV If you are using BIPV, you should consider built-in lighting systems that utilize white LEDs (in addition to designing for daylighting as much as possible). Also consider heat effects on PV efficiency; you might design a system that sucks heat from PV panels and transfers it...

## Building Integrated Photovoltaics

Clara Said:Photovoltaic laminates?We Answered:I'm not aware of any serious installations using the type of laminates mentioned. You can search for solar roofing tiles or roofing materials, and there are products with a similar idea. In general, silicon thin film has historically had problems. It may be cheap, but it doesn't last. While a conventional crystalline silicon under glass panel can last for 20 or 25 years at least, the thin film of the type shown might last 3 or 4. For one thing, it's a flexible plastic-type material that is stuck onto the roof with adhesive. Over years...

Kelly Said:can one solar charge the batteries for an electric mower?We Answered:Yes. Piece of piss. You only use a mower about 1% of the time at most, so even a fairly small solar panel should be able to keep it charged. Just check that the panel's output voltage matches that of the batteries.Samuel Said:Know of a good model for determining ROI of purchasing solar panels? How they compare to other investments?We Answered:Sure, use the NPV function in Excel. set up two equations, one that have the capital of the panels (and any other costs you...

Wendy Said:If i buy solar panels will i be able to get money from the pseg company?We Answered:posssible , but that is mostly a myth. so dont count on it.Angel Said:Any help financially to buy solar panels?We Answered:Yes, there are tax and other incentives to installing solar panels, both electric and thermal (hot water). In the USA, the tax credit for residential solar is 30%, plus whatever your particular state offers, if anything. Look up your state on: http://www.dsireusa.org/ Also, realize, that installing solar is generally not an instant-save proposition. You pay thousands or tens of thousands of dollars to...

Lisa Said:What are some things I need to look for when buying solar panels?We Answered:Well, wattage and size are important , so too is voltage and current. All of these should be matched to the project you have in mind, other wise it is just like buying a random battery and hoping it fits in your camera. Perhaps the biggest issue will be cost. For any appreaciable project solar pannels can get really expensiveDanielle Said:Buying Solar Panels...?We Answered:Are you aware of the complications that go along with installing a solar system? A solar panel might put out about 100 watts...

## Cheap Solar Panel

Juanita Said:Needing a good cheap solar panel with an engine (or a solar car)?We Answered:You need to put it together yourself. You might have good luck with one of those cheap (\$20-30) car battery slow-charging panels that plug into your cigarette lighter (from ebay) and use it with a low-powered motor from allelectronics.com that the other guy linked to. I wouldn't worry too much about matching voltages, just get a small motor that will run on less than 12V.Phillip Said:What do you guys think about this cheap solar panel company?We Answered:Hey Geek, NW Sales does not make solar panels, they are...

## Cheap Solar Panels

Tommy Said:Is it possible, and if so, then how can I, get a free guide to making cheap, efficient solar panels?We Answered:Everything in the body of your question is laudable, and possible, except for the part about "cheap." Solar electric is generally a large (\$10k or more) up-front investment, and a cost savings over time, as well as environmental benefit. And in many areas, it would never recover its initial investment, not at today's prices. Costs continue to fall, though. The internet is full of sites that suggest you can power your whole house with just \$200 or less of...

## Cheap Solar Power

Gwendolyn Said:can anyone tell me where in Houston TX to find a cheap solar powered fountain pump for a school project?We Answered:Solar powered fountain pumps will usually only produce a small, weak spray. (pumping water is a high energy function, and solar has its limitations). But small ones can be found at garden centers for about \$50-80. You might also just order one mail-order through the inernet if you can't find a local source.Leslie Said:Is Solar power cheaper than buying in electricity set-up?We Answered:hook up to the local utility company. solar can be a secondary source, but not the primary...

## Cheapest Photovoltaic Panels

Denise Said:Could mirrors reflecting and focusing sunlight be used to make steam to power electric generators?We Answered:Yes. Here is a link to an article about a power plant in Spain which does just that: http://petrochemical.ihs.com/news-07Q2/e… It is an 11-megawatt plant. These things are very feasible. It will produce more than 300 megawatts by 2013. It uses lots of mirrors to reflect and concentrate light at a single spot to heat water to drive turbines to create electricity. €5 million was awarded to the project project because of its highly innovative approach by the EU.Tracey Said:How can I make my home self-sustainable in energy?We Answered:overall been green...

## Cost Of Photovoltaic Cells

Steve Said:Can anyone tell me about some cost effective solar projects?We Answered:If you are paying six cent per kilowatt hour you best stick with it. I live full time in an RV and I have a pretty good solar system. Occasionally I will take a spot in an RV for a month. I pay on the average of 14 cent a kilowatt with no extra fees added on by the electric company. If I used the same amount of electricity that I use in one day when hooked up to the Gird I would have to have 100 time more solar that...

## Cost Of Photovoltaic Panels

Kent Said:What is the cost to install solar panels?We Answered:I don't know about Texas, but in California, doing a self-install does not invalidate the rebate. And it certainly does not invalidate the Federal Tax Credit on form 5695 http://www.irs.gov/pub/irs-dft/f5695--df… . Take a look at the form and instructions. I got both rebates installing myself. Florida requires professional installation for their rebate, I think. You must still be compliant with your local building codes. What you could do is hire a roofer to put up the standoffs and panels, then later, an electrician to hook it up...

## Cost Of Photovoltaic

Eugene Said:Is the present installed cost for photovoltaic power \$4 per watt?We Answered:That answer was way off. The actual "real installed cost" is about \$10 per Watt. Sometimes there are "buydowns" and 'rebates", etc offered by the Federal Gov't, State Gov't, or utilities to buy the cost down another dollar or two, but even then the cost is still about \$8 to \$9 per Watt. The guys in "sales mode" don't tell you about the expensive "inverter" that is needed to convert the 12 Volts produced into 120 Volts to use in your home. This...

## Cost Of Photovoltaics

Evelyn Said:I need help picking an Engineering field for a project?We Answered:I would recommend Traffic Engineering. You could do a project on what times a busy intersection or stretch of road becomes congested and at what traffic flow rates/volumes, or how many people actually stop at STOP signs at different intersection types, or how many pedestrians cross against the light at a signalized intersection, or lots of other cool things that you could study outside in the field.Jerry Said:why is flying to space so expensive?We Answered:The simple answer: Conservation of energy laws = ~You don't get something for nothing."...

## Cost Of Pv Cells

Ruby Said:Solar Cell - Technology?We Answered:You'll need a semiconductor fabrication plant and tens to hundreds of millions of dollars at least to get you started - good luck ! Hope your PhDs are up to it ;)Annie Said:What are the disadvantages of solar power?We Answered:where? how much sun? are there trees in the way? do you have a section of roof that slopes south? is your roof strong enough to support the solar panels? does your power company pay part of the cost? or pay for electricity you generate and feed back into the lines? does your neighbor have trees in the way. (mine does.) or are these questions irrelevant?Johnnie...

## Cost Of Pv Panels

Gabriel Said:Generating electricity by photovoltaic cellls?We Answered:multiply the voltage of the cell by the current.Annette Said:how much will a PV(photo voltaic) system for my house in Sacramento cost?We Answered:This is kind of a generic answer for any question that begins "How Much will it cost", when what is meant is how I ensure I pay a fair price and get a decent job done. Labor costs vary widely depending on locations; materials are a bit more standard. call local supply stores to get Ideas on the cost of materials. One way to get a true competitive price for the job, regardless of...

## Cost Of Pv

Eddie Said:How much would it cost to replace an LCD camcorder screen of a Panasonic PV-GS250?We Answered:I heard from alot my uncle who is a camera expert that if you break any part of a camcorder (esp. the screen) it would be cheaper to buy a new one. If you really want to know, ring up Panasonic and ask them. It's upto you!Sylvia Said:Cost of a taxi from PV airport to bucerias, costa dorada resort?We Answered:The Puerto Viejo airstrip in Costa Rica is approximately 2,186 miles or 3,518 km from the Costa Dorada Resort in Bucerias Mexico. At...

## Cost Of Solar Cells

Don Said:What would be the cost of the solar cells needed for a 750MW plant in a region where the intensity of the sunl?We Answered:900W / m^2 not per square mile. here's a thing, if someone DID decide to slap together a power plant like that, the cost of those cells would surely drop.Elmer Said:Where do I get solar cells in Chennai?We Answered:i think u r a good user of internet so instead of searching chennai u could just buy from internetHilda Said:What is the cost of solar cells compared to the cost of fossil fuels?We Answered:The cost of a solar cell...

## Cost Of Solar Panels

Eleanor Said:Solar Panels vs. Cost: Worth it?We Answered:Your math is right. Solar today is not going to be cheaper powering just your gaming computer, compared to grid electricity. A modern computer is a special case, because it has a switching power supply generally capable to accepting a wide range of input voltages. So if you had an array putting out 150 to 330 volts DC, you could probably hook your computer up to it directly, no inverter required. The problem is, to get up to that voltage, you'd need maybe 6 modern panels, and that has a cost...

## Cost Of Solar Power

Henry Said:what could be the procedure and cost of solar power system for a domestic home use.WOULD ANY SUPPLY CHAIN show?We Answered:You would need a bank of batteries. The more batteries the longer it will run. The batteries could be charged by solar power. You could also use commercial power, when it is available, to charge the batteries. Then use the batteries to power the inverter when the power goes off.Scott Said:What is the average solar power cost???????????We Answered:That's a wide open question, and the net cost can vary 10:1 depending on what you mean. Some of it depends...

## Cost Photovoltaic Cells

Curtis Said:How will going green benefit America?We Answered:Well, going green should benefit parts of the US. If the Greenland ice cap melts, those that live in NY City are going to have to find a new place to live and those that own real estate there are not going to be happy campers. However, those that have real estate at higher elevations will find that they have become the owners of ocean front property. They will be very pleased indeed. Those who manufacture wind turbines--GE--will benefit. Those who own the land in places like Kansas...

## Cost Solar Panels

Melinda Said:How much does it cost to install solar panels at home?We Answered:It is not that simple. You need panels, batteries to store the energy, an inverter. Your usage can be figured out by a professional who will ask you questions about your lifestyle to figure out your average usage, determining your panel/battery needs. You cannot run any high usage items such as electric dryers or electric stoves, or electric furnace (depending on where you live). There are a lot of variables. You will be looking at around \$20-30000 per average 4 person household....

## Crystalline Silicon Photovoltaic

Enrique Said:how is solar silicon made?We Answered:Have you tried using your web browser to get the answer? you might find that the process is VERY energy intensive, and rather hazardous. I once saw a report that suggested that solar electric might be the most hazardous and dangerous way to get electricity, if one considers the entire production cycle, from mining to pulling the wires - much more so than nuclear or coal!...

## Diagram Of Solar Panel

Sean Said:where can i find a complete diagram of how a solar panel works?We Answered:There's a fully illustrated guide in this book I bought at http://www.freepower4u.com I just used that book to help me BUILD a solar power system (batteries, solar panels, inverter, disconnect, etc) for the grand total of \$197. I'm using it with some deep cycle batteries which charge during the day and can run my fridge all night... so I'm guessing it would run your air conditioner. It's a great little guide which I highly recommend. Casey Said:wiring diagram of solar panel to battery to inverter?We Answered:The solar panels are wired...

## Diy Solar Panel

Myrtle Said:DIY Solar Panel. How many watts will it emit?We Answered:Watts add up. If one cell can produce 1.8 W, then thirty six cells can produce 36×1.8 W. Volts add up for cells that are wired in series. Amps add up for cells that are wired in parallel. If you put all of the cells in series, then you'll get 36×0.5 V, at 3.6 A. Etc.Hilda Said:how to build a simple diy solar panel?We Answered:oh there are a lot of plans out there on how to build your own solar panels try http://solarpowerandcleanenergy-space.co… they have a few resources thereNicole Said:Whats the difference...

## Diy Solar Panels

Dolores Said:Does anyone have experience with resendital wind generators ?( or Diy solar panels)?We Answered:As so often, it depends what you want to do with it... It all has to do with efficiency or conversion loss (depends whether you are an optimist or pessimist). And your location also plays an important role. Wind turbines are only useful if they are mounted approx. 30 - 50 feet above ground, and there are not many trees and buildings around. And to make it wothwhile, they have to be somewhat bigger than what typical DYI stores sell. This gets you into another problem: In some residential...

## Diy Solar Power

Glenda Said:DIY solar power in house?We Answered:If the old building isn't well insulated, get the thickest insulation you can buy. Not only will it be cheap, it will pay you back after the first couple years. If you're actually on a lot of land, consider mowing the fields and piling all the debris in one place to compost, then extracting heat from the compost pile to heat a room in your house.Jane Said:DIY: Given a solar panel and an electrical outlet, how do I power a fridge using solar with grid backup?We Answered:2n2222 is right about the power you could...

## Domestic Solar Panels

Tracy Said:If Solar Panels are installed in a domestic situation , can the owner?We Answered:You can route the water any where you want with the correct piping or tubing so it gets there.Tonya Said:Could the average domestic roof if covered with solar panels run an electric car?We Answered:Yes, but it would be expensive. As a matter of fact, that's an option when buying the Tesla Roadster. "The way Solar City figures it, if you have a daily commute of 40 miles, you'll require 500 square feet of solar panels on your house's roof to power the Tesla Roadster for a...

## Domestic Solar Power

Gilbert Said:why use of solar energy has not worked for India so far?We Answered:solar panels or cells requires silver lining which needs more capital (money) and the output is very less for each solar plate.It also requires lot of maintenance because of direct exposure to environmental conditions.Any how, the solar generators or solar lamps are now coming into market abundantly;But as you said to resolve the power crisis,I think it would take more time....Edgar Said:Why do some say that solar power would reduce oil dependency?We Answered:If electricity was less expensive then it would be feasible for people to convert their...

## Efficiency Of Photovoltaic Cells

Jared Said:A typical photovoltaic cell delivers 4.1×10?3 of electric energy when illuminated with 0.12 of light energy.?We Answered:Efficiency of energy conversion by the cell is (out put / in put)x100 = 4.1x10^-3x100/0.12 = 3.42%Alfredo Said:would infrared or ultraviolet radiation yield more electrical energy on a per-photon basis?We Answered:ultracvoilet - lower wavelength => higher frequency => more energy per photon....

## Efficiency Of Photovoltaic Panels

Glenda Said:What do sustainable energy technicians do?We Answered:Entry level positions and the schooling that it takes to get these just opens the door to a job. Most of these kinds of jobs either require experience, which you will get in an entry level job, or higher education AND experience. Unfortunately, no one ever uses all the things they learned in school. It would be shortsighted to think that if you learn all that, that you would use it. You would have to work for several different companies because none of them is going to do everything listed.Carole Said:I need help...

## Efficiency Photovoltaic Cells

Sean Said:Lifetime of Photovoltaic cells?We Answered:i was told that they last forever, but they gave me a 25 year grantee so whats that tell yaRuben Said:how many square meters of solar cells would be required to meet its energy requirements?We Answered:about a millionHoward Said:Energy and Efficiency?We Answered:haha : P thrermo amaya...

## Electric Solar Panels

Brett Said:What is the most cost-effective place to buy large solar electric panels?We Answered:Great answers here. Just to summarize, in order of priority: 1) Reduce usage first. For every \$1 you spend on conservation, that's about \$4 less you need to spend on your solar system. It costs less to use less electricity than to make your own. 2) Research solar hot water. Solar hot water is ~ 85% efficient, as opposed to ~20% for solar electric. You get a better bang for your buck installing solar thermal than solar electric. 3) Install solar electric. Prices...

## Electricity Solar Energy

Max Said:How is science involved in Generating electricity using solar energy?We Answered:Calibrating scales to measure yield/output and efficiency, suitability & longevity of materials......

## Electricity Solar Panels

Erika Said:What factors effect the amount of electricity produced from solar panels?We Answered:irradiance in watts/meter^2 (1000-800w/m^2 depending on air quality) COS of angle to the suns rays efficiency of the panels (usually about 15%) age of the panels(one dead cell can drop an entire panel from the array) how dirty are the panels (dust, bird poop, leaves, shading) efficiency of the inverter (usually about 90%) All of these factors affect the amount of electricity produced. One other consideration is that in areas of extreme hot and cold the band gap of the silicon is changed. Thus in very low temperatures(-20F) the voltage gets higher and the...

## Energy Solar Panels

Billy Said:Can you get energy at night from solar panels?We Answered:There are a number of ways to produce small amounts of energy at night from solar panels. Here is an example of one: http://www.youtube.com/watch?v=roLWoFIjk… Electricity is more difficult to store. Putting electricity on the daytime grid and taking power away later is more like a banking system than storage but the results can be the same. If everyone were using solar energy power lines would have to wrap the globe to keep the power flowing. Electricity can be shifted to other energy trapping means which are later used...

## European Solar Energy

Morris Said:Solar Energy 1 trilion \$\$\$\$?We Answered:There's a question in there somewhere, I know it. If you are asking if your IPO is going to be like (or bigger) than Google while starting in the penny stock category ("for 0.10 Euro cent per share")--not a chance. First, Google and highfliers like it were going concerns well before their IPO. Even Martha Stewart had a rich program and product line so that when her Omnimedia went public it made her a billion dollar babe, on paper. There are lots of wonderful ideas out there, and long have been, who didn't fly...

## Free Pv Panels

Johnny Said:wind turbines - what is practical and effective ?We Answered:Well small wind turbines are not necasserily pratical of effective. When it comes to a wind turbine, as with any aerodynamic system, the forces we are interested in are lift and drag. The forces acting on a turbine are what allows it to rotate, essentially speaking lift is good and drag is bad. One of the most important factors when designing a blade for a turbine is the aspect ratio. This is the ratio between the lenght of the blade and its average width along its length. The higher the aspect...

## Free Solar Panels

Jimmy Said:Can I get free solar panels?We Answered:I bought those books. I have CD's and Books on free renewable energy as well. It may not be a scam but no real information that was helpful to me. You get a book or CD that tells you the same things you can find on the web just by doing a search on the weakest search engines on the net. They say things like ask your local road crews for them. Here is a thought.. If the local road crew had free solar panels to give away the workers would take them...

## High Efficiency Photovoltaic

Phillip Said:High efficiency photovoltaic solar panels?We Answered:Photovoltaics are more expensive to build and maintain over the years than a mechanical system using solar reflectors to turn water to steam which powers a steam engine and a generator. The mechanical system can be totally homemade and owner maintained while the photovoltaic must be purchased and maintenance must be hired out. When dark or cloudy there is no sun to power either one and you must do without electricity in the case of photovoltaics, but with the mechanical system you could generate power by using a bio-fuelled backup boiler to operate the...

## Home Photovoltaic Systems

Leah Said:How can i assemble a home photovoltaic system?We Answered:Depends where you live. If you live in Arizona, California, or Oregon, I would suggest checking out Solar City, a large-scale installer of solar cells that will give you a free quote. With them, you can even lease the solar cells on your house and still save money on your power bill....

## Home Solar Cells

Gary Said:can I make electric solar cells at home?We Answered:Yes you can. Search for "cuprous oxide solar cell". An example is linked below. You can also make a dye-based cell at home. Both of these technologies will put out less than 1 milliwatt - if you wire several of them together, you might be able to power an LCD watch or calculator, but that's about it. The output is easily detectable with a digital multimeter.Agnes Said:How do I grow a home made solar cell?We Answered:here you go nice and easy, i tried the copper thing, its lame but it...

## Home Solar Electricity

Ted Said:Solar energy aparatus for home use/electricity?We Answered:The now-defunct Clear Skies program still has a supplier list on their website here: http://www.clear-skies.org/ The new DTi Low Carbon Buildings program now has responsibility for the funding of Solar installations (there were grants available) Check out this site for a quality description of the products on offer and how and where to get them: Energy Saving Trust http://www.est.org.uk/housingbuildings/f…...

## Home Solar Energy

Myrtle Said:where can i find info for a DIY home solar energy without having to buy some fancy kit?We Answered:The Permaculture Magazine often has articles and adverts for products and courses that may help, also the CAT centre in Machynlleth, Wales have much information, run courses etc.Arthur Said:how can I convert my home air condition system into solar energy?We Answered:Depending on your location, the size of your home and cooling capacity of your central A/C unit it might be hard to covert 100% of the power use of your central A/C to solar. Not to mention very expensive. Now if you...

## Home Solar Panel

Nathan Said:How to setup my home on Solar Panel?We Answered:You have to be clear on what you want - "...cut down electricity cost" can be done relatively inexpensively at least as compared to going 'off the grid'. Nor do you tell us where you are which does make a difference. Keep a few things in mind: A solar panel will deliver 10-13 watts per square foot in full sunlight, and costs about \$4/watt to install, or \$40/square foot - in US dollars and US measurements. Solar panels do not operate at night (of course), so some sort of storage...

## Home Solar Panels

Diane Said:Can you remove solar panels to another home?We Answered:Sure you can! They don't have to be mounted to the house, that is where they are usually put to take up less space and not be shaded by buildings, but if you have a large property, they can be mounted on stands. Alternately, I am sure they can mount them on the roof in a way that minimizes the damage and can easily be removed and the roof repaired. I think the system is a great investment and the cost of moving them can be minimal, depending if you can...

## Home Solar Power System

Martha Said:how to built a solar power system in my home?We Answered:ahmed, without photovoltaic cells you are going to have a hard time generating electricity. solar energy requires a lot of initial cost - a typical home installation in the US costs around \$20,000. the simplest kind of solar heating is to use the sun to heat water for the house instead of using energy to heat the water. that will save you some money. another thing you could do without PV cells is to build a solar concentrator -basically a large curved mirror or mirror array that will...

## Home Solar Power Systems

Samuel Said:Home Solar Power Systems - Practical How-To Site On Renewable Energy?We Answered:Living Off The Grid is a power-packed site on renewable energy and green living. It covers 5 major areas - • Homemade Wind Generators • Solar Panel Installation Guide • Run Your Generator on Biodiesel • Renewable Energy Solutions • Build Your Own House These step-by-step guides show you how to build sustainable energy systems at home to save money, ensure a lifetime supply of green energy and protect the environment as well. Recommended for DIY folks who want the latest in cheap energy & green fuels.Chad Said:How long can the solar power systems...

## Home Solar Power

Jose Said:How does one convert an existing home to solar power?We Answered:You'd mount solar panels on the roof and then wire them into a breaker box. You'd want to choose which circuits to put on the new box and you'd use a transfer switch between the electric company's power line and your solar panel line (to prevent the back flow of electricity between the two). The major cost will be in the solar panels. You need to figure out how many amps you need for the circuits you want to run. That will tell you how many panels (may differ...

## Home Solar Pv

Casey Said:Does oklahoma have any grants to pay for renewable energy sources on your home?We Answered:Here's a list of financial incentives for renewables in Oklahoma: http://www.dsireusa.org/library/includes… It doesn't look like there are any state incentives for your plans. However, there are still the federal tax credits. Definitely, go with at least the hot water--payback will come in a year or two, even without tax incentives....

## Home Solar System

Ted Said:what are the benefits of a home solar system on a homes quality of life?We Answered:I would think the main benefit would be the money saved on electrical expenses and therefore the increase in disposable income.Harold Said:Should I wait to install a home solar system until the government funding creates cheaper and better choices?We Answered:This question is very difficult to answer as there are numerous variables that need to be factored in some of which are in the installers opinion. Look at these factors and ask yourself again. In no particular order: How much are you currently paying for electricity? Do you...

## Home Solar Systems

Ken Said:hi this is babu from chennai, i am interested in learing about solar home systems,?We Answered:This http://www.archive.org/details/DIY_self_… is a home video of how we installed our panels. It should not be considered authoritative in any way. Where I live (California, USA), the local community colleges and technical institutes have formal classes. It's no different than what one would take if they were pursuing any other trade, such as electrician. Sorry, I don't know about India.Terri Said:Are home Solar Systems just for the wealthy?We Answered:16k? i priced it at 30k. this is the reason everyone doesn't have them. even...

## House Solar Panel

Darryl Said:Which side of a house do you place a solar panel on?We Answered:In the northern hemisphere, put it on the south side of the house. In the southern hemisphere, the north side.Audrey Said:Where can I find inexpensive solar panel set ups for my house?We Answered:You can find them online for tens of thousands of dollars (before shipping and installation) or you can build them yourself with items in your house and simple tools from the hardware store. There is a great ebook about how to do this. I'll put it as my source.Philip Said:What type of battery...

## House Solar Panels

Nathan Said:How do I go about arranging for a windturbine and some solar panels for my house?We Answered:You definately need planning permission. Solar panels & a wind turbine are very expensive...around £20,000 so it may be worth calculating how much it will save you over the life of your house before paying out all that money. In reality the only people who will really benenfit is the next generation of people who buy your house. So how green are you really?Pauline Said:How much solar panels would I need to power up our whole house?We Answered:Unfortunately without knowing your energy usage...

## Household Solar Panels

Grace Said:About how much will getting your household to run fully on solar panels reduce your carbon footprint?We Answered:A great bang for the buck to reduce your home's carbon footprint is solar water heating. This uses the heat from the sun to heat your water, instead of electricity,oil, or gas. Water heating is as much as 30% of a home's energy usage. For about \$8000 - 12000 installed, you can have the sun heat up to 75% of your water. As for solar electricity, the debate about the embedded energy, or how many years it takes to balance...

## How Do Photovoltaic Cells Work

Andre Said:How is electrical energy generated? ?We Answered:Nuclear Power: Uses fission to generate heat that is transferred to water, creating steam and moving a turbine (the turbine spins magnets, in earths magnetic field, and makes charge) Wind: Uses wind to turn the turbine, of course going through different gearing depending on the location/ environment. Hydroelectric: Uses water-flow from a river, that passes through a dam, and spins a turbine. Coal: This ones the cheapest, burn coal, releasing energy and making heat to make steam. Again, the steam spins the turbine. Solar: This ones different, and a bit complicated. Basically, the energy in the light from the sun chemically...

## How Do Solar Panels Work

Cheryl Said:How do Solar Panels work?We Answered:A solar panel is a device that collects and converts solar energy into electricity or heat. It transfers energy from the sun into electricity or heat which can be used by (for example) nearby buildings. Solar panels can be made so that the sun's energy excites the atoms in a silicon layer between two protector panels. The atoms split up and the electrons travel down wires into the home for electricity. Solar panels were in use over one hundred years ago for hot water heating in homes. Solar panels can also be made with...

## How Does Photovoltaic Work

Susan Said:just wondering about solar power?We Answered:There is passive solar and active solar. Passive solar uses the heat from solar radiation to heat water or some other transferable fluid to do work, either by moving heat or manipulating fluid and vapor pressure to do work. Active solar uses solar photons reacting with the dielectrics in the photo-voltaic cells to produce electrons. This is ordinary electricity, which must either be used immediately or stored somehow. Since solar power is not available at night, either photo-voltaic power must be confined to daytime use or batteries must be employed...

## How Does Solar Power Work

Victoria Said:How does space-based solar power work?We Answered:The idea of Solar Satellite Power Systems (SSPS) has been around for the better part of half a decade, and became particular well known after the writings of space advocate and accomplished physicist, Gerard K. O'Neill, were published. In the simplest sense, a SSPS is a satellite placed in Clarke Orbit (or Geosynchronous orbit) around the Earth. This high orbit ensures nearly ninety-nine percent of an objects time spent revolving around the planet will be in sunshine, with a scant one percent spent in shadow. These 'stations' would absorb direct, undiluted solar energy...

## How Photovoltaic Cells Work

Janet Said:Photovoltaic cell question?We Answered:Actually p-type is the side more number of holes and thus has a tendency to accept electrons, and similarly the n-type has more electrons so tends to accept holes. So the p-type layer is not negative. I think you are referring to the case of a p-n junction diode. The p-type layer has a tendency to accept electrons and the n-type repels electrons(as its high on electrons) so the electron travels from outer circuit to the p-side. The reason why electron goes from the outer circuit and not directly is because in between the 2 layers an...

## How Photovoltaics Work

Regina Said:electrical question hehe?We Answered:Chances are you have a serious wiring issue, singular voltaic cells produce very small voltages, chances are if these are gauged with cheap equipment then the actual output voltage may not be withing the meters range. You didn't specify which side of the inverter was the trouble side, without knowing this its hard to give you the common problems you may be experiancing. If you have a better meter, use it and see what you get.Charlotte Said:how do photovoltaics work?We Answered:You get a semiconductor and when a photon hits it, it knocks an electron...

## How Solar Energy Works

Ian Said:I need to know how solar energy works?We Answered:The only part I know is sun heating pannels .Jo Said:Can someone give me a simple definition of how solar energy works?We Answered:Long answer: Photovoltaic cells are made of special materials called semiconductors such as silicon, which is currently used most commonly. Ba¬sically, when light strikes the cell, a certain portion of it is absorbed within the semiconductor material. This means that the energy of the absorbed light is transferred to the semiconductor. The energy knocks electrons loose, allowing them to flow freely. PV cells also all have one or more electric...

## How Solar Panels Work

Kathy Said:WHY do solar panels work?We Answered:Solar panels depends on the sun to store sort of heat energy and convert that energy into electric energy, as simple as thatDan Said:how do solar panels work in satellites? ?We Answered:They work the same way they work anywhere else. http://science.howstuffworks.com/solar-c…Jimmie Said:How well do solar panels work in Pittsburgh, Pa?We Answered:It is not necessarily a question of how well do they work, but more so a question on what location will they be working in. I assume you are talking about Solar Electric (Photovoltaic) panels. These work equally as well in Pittsburgh as...

## How Solar Panels

Gail Said:How can electrons keep being generated by solar panels?We Answered:It's because the photovolcaics are closed-loop systems. A photon will come in and basically knock an electron across what is called a "junction" and create current, but it is "caught" (really simplified version) on the other side of the junction and kind of "bounced back" into place. It's like Formula 1 racing or NASCAR. The car will be sitting in the Pit, just waiting to go, then will tear out, run a few laps until it requires more fuel, then stops in the Pit again, gets refueled,...

## How Solar Power Works

Nicholas Said:what are the advantages and disadvantages of solar power?We Answered:The terms solar power and solar energy are often used synonymously but solar power usually refers to photovoltaic (PV) and concentrating solar thermal technologies that convert sunlight into electricity. In the case of solar PV, the process is direct, via silicon-based cells; in the case of concentrating solar thermal, the process involves heating a transfer fluid to produce steam to run a generator. While PV has advantages in terms of simplicity, the high temperatures produced by solar thermal systems also can provide process heat and steam for a variety of...

## How To Install Solar Panels

Marshall Said:How hard and expensive is it to install solar panels on a house that is already built?We Answered:More or less depends on things like orientation of the house, roof pitch, shade, etc. Here are the folks you probably want to start with: http://www.seco.cpa.state.tx.us/re_solar… and http://www.infinitepower.org/calculators…Frank Said:how to install solar panels on a small house?We Answered:Sounds great idea!!!! it's good to start small and then grow depending your needs. It think this will help you a lot with your project: http://www.agua-luna.com/offgrid_guide.h… Doon't give up if people tell you you are dreaming or is not good idea, go for it and have fun with it too..Frederick...

## How To Make A Photovoltaic Cell

Nancy Said:Why Oppose the Reality of Global Warming?We Answered:Those who are behind the efforts to convince the world that global warming is a myth are those who have most to loose, Exxon Mobil being one of the biggest but includes many of those who make millions out of the selling our existing natural resources. This is no different than when a few decades ago incontrovertible evidence showing the link between smoking and numerous fatal diseases was put forward by those scientists studying the subject. The Tobacco companies funded sceptics, started health reassurance campaigns, ran advertisements in medical journals...

## How To Make Photovoltaic Cells

Nathan Said:How Much Energy per Acre from the Sun Hits the Earth? How Much of that Energy does a Corn Field Capture?We Answered:Solar Constant Describes the Solar Radiation that falls on an area above the atmosphere at a vertical angle: s = 1.37 kW / m². In space, solar radiation is practically constant; on earth it varies with the time of day and year as well as with the latitude and weather. The maximum value on earth is between 0.8 and 1.0 kW / m². In Germany, the average annual amount of insolation varies between 950 and 1100 kWh / m², depending...

## How To Make Solar Panels

Ronnie Said:How to make solar panels?We Answered:you will not be able to build a solar panel big enough to fit a house hold usage not to mention all the wiring to the main fusebox then the separate fusebox for the solar panels oh and then you will need to feed whatever power you don't use back to the power company so really unless Ur a super guineas id leave it and try and see if you can get solar power panels installed by your energy company for a cheaper cost like they do were i live.Edward Said:While inmates get...

## Images Of Solar Energy

Victoria Said:Science questions!!!!!?We Answered:you've got a lot of homework... this is the third set i've seen here tonight posted by you some questions are so easy that in the time that you took to put them on here and ask them, you could have answered them yourself... pretty bad time management, especially if no-one will do your homework for you or what if someone does and gives you bad answers on purpose? or bad answers because they make a mistake? what are you going to do then? you really need to hit the books, girl. or the net, most of these...

## Images Of Solar Panels

Lauren Said:A question about Solar Panels. Please help!?We Answered:a battery provides DC voltage. most electrical devices use AC voltage. to change DC to AC you need an inverter . the problem with solar power is that you have to be able to store energy for use at night or cloudy days. batteries are the best way to do this, but it takes alot of them--too many, in fact to be very practical given current battery technology. in addition, there is nothing "green" about a battery. batteries are one of the most polluting devices on...

## Installing Photovoltaic Systems

Ruby Said:Can the federal solar tax credit be claimed ASAP like the 1st-time homebuyer tax credit?We Answered:you can apply the credit to the year that you do the installation it appears you have not already installed this energy and only if you can afford it in the future there is no way you could amend your 2009 return, it hasn't been installed yet and remember this is a credit, not a refund so if you have no tax liability, there probably will be no effect at all my daughter in law installed energy windows and since she has no tax liability, it has no effect...

## Installing Solar Panels

Ken Said:If someone wants a career doing energy audits of homes and businesses and installing solar panels, what job?We Answered:This would be called a low end, non-skilled job. People who do this work for solar panel dealers, and are typically trained on the job. It's not much above minimum wage, and the only decent career path is in someday owning your own business. For that, a business degree would suit you better than any tech degree. An AS in electronics would prepare you for the job you described. Did I mention that it's a low end, low paid job, with not...

## Large Scale Photovoltaic

Carla Said:Utility Grid or Battery Bank For Large Scale?We Answered:40,000 homes is a utility grid but how do you plan to power the homes at night? Electrical production in general has very limited storage capacity. Usually it is easier to simply turn off non baseline facilities and generate sufficient power with some "spinning reserve." Many solar thermal facilities have built into them some heat storage capacity that allows operation at night. Neither photovoltaics nor parabolic dish/stirling engine electrical production has any built in energy storage. If you intend to supply power at night you will...

## Make Photovoltaic Cells

Ellen Said:How do you make a practical photovoltaic cell?We Answered:Technicaly but is is hard, you need to get alot of silicon, run small wires through it (the wires need to be partially exposed) two need to come out seperatly to provide a negative and possatve current, and then coat it in glass. If it is done correctly then when the sun hits the panel the photons in the sun will excite the electrons in the silicon creating the electricity in the wiresJimmie Said:how to make photovoltaic cells?We Answered:try here: http://rds.yahoo.com/_ylt=A0oGkxwbUixGIX… http://rds.yahoo.com/_ylt=A0oGkxwbUixGIX… http://rds.yahoo.com/_ylt=A0oGkxwbUixGIX…Shannon Said:how can a potato be used to make a photovoltaic cell?We...

## Make Solar Power

Brandy Said:What needs to be done in order to make solar power affordable and available?We Answered:Solar hot water heating already makes sense in many locations. It seems like every new house in Honolulu has it. As for solar electric (photovoltaic panels), the technology is expensive for utility-scale generation, but financially viable for individual homes in increasing areas of the country. That's because a utility can have a nuclear or coal-fired boiler, and produce electricty at (say) 2 cents a kWh. For a consumer, though, the utility may charge 20 cents a kWh, on par with what solar electric...

## Most Efficient Solar Panels

Julia Said:What is the most efficient way to harvest solar energy?We Answered:Aside from buying more efficient cells (which cost a lot more than standard cells) or putting tracking motors on your solar panels (and have the panels rotate during the day which would actually be surprisingly easy to do) there isn't really going to be much you can do. You could use the sun for water heating directly as others have suggested but that's about all you can do with your home. A solar thermal could have higher efficiency if you can get the temperature up high enough but those are for...

## Off Grid Photovoltaic

Darren Said:best use of off-grid electricity surplus?We Answered:Off grid you would really need to consider some EESU storage which is still hard to get, or a limited amount of battery storage. You need battery storage so that you can start a motor when your supply is putting out enough only to run the motor. You can live without lighting, but you will not. Solar power is consistently absent at night. Providing some power for nearby neighbours who are on grid might be the best solution, cutting their grid usage. In exchange they might supply you with some grid power. You would of course...

## Off Grid Solar Power

Susan Said:how do you install solar power on a home that is off grid?We Answered:you will need panels, charge controller, batteries and inverter. Its a very good idea to have a generator for times of low sun. You can also hook up a wind generator to the same system If you want to know more look at: http://www.earth4energy.com/solarpower.htmSylvia Said:Bush`s old pig farm ranch has a Organic farm and off the grid power(solar) What about Chaney`s house?We Answered:Answer: Who is "Chaney"... He's not that guy that uses as much energy in a month as most families use in a year, then buys "carbon credits" from...

## Photos Of Solar Energy

Ellen Said:What is the Energy required to conduct electrolysis?? Is Solar Energy Sufficient?We Answered:Depends on what rate of electrolysis you desire. Almost any voltage would be sufficient. Adding salt to water lowers the resistance levels also to make the effects a little more dramatic. Hope this helps.Kathryn Said:How do we convert the Sun's surface brightest and most dangerous amount of energy of helium and hydrogen into?We Answered:With a solar panel...Jesse Said:Why is Obama releasing thousands of pounds of CO2 flying from DC to Denver?We Answered:It could be more than just a photo op (no T). He could...

## Photovoltaic (pv) Solar Cells

Marcus Said:how is solar energy converted into electrical energy???????We Answered:thanks for sharing, if you knew already, why did you ask?...

## Photovoltaic Cell Cost

Shannon Said:If a commercial solar cell with a maximum output of 2 amps at 0.5 V costs \$30...?We Answered:Watts = amps x volts. So how many watts is the cell in your example? Can you now figure out how many cells would be needed for a kilowatt (1000 watts)? By the way, this problem seems old - the costs are off by a factor of 10.Georgia Said:Help on photoelectrochemical hydrogen production at home?We Answered:The National Renewable Energy Lab has a number of alternative to the traditional hydrogen production with electrods. Given your constraint of focusing on water to hydrogen conversion (2H2O...

## Photovoltaic Cell Efficiency

Mario Said:Te active area of a 0.5V photovoltaic cell is 120mm by 145mm?We Answered:The missing part of the question is the current. Since its the sun you'll have to make some assumptions. Take a look at the site given below. Scroll down to the bottom. Its a problem very similar to yours. Once you have your current its simply a difference is power. P = V*I you have the area (0.012m x 0.0145m) and include the efficiency factor and you are set.Alma Said:If a Strirling Engine was used to cool a concentrated Photovoltaic cell, how efficient would the system be?We Answered:Compared...

## Photovoltaic Cell Manufacturing

Donald Said:how much capital need to start manufacturing photovoltaic cell in india?We Answered:Do you mean the basic semi-conductor photocell or use the same to engineer various Photovoltaic based applications ? www.semiconductor.net/photovoltaics...

## Photovoltaic Cell Works

Bradley Said:How can a photovoltaic cell is constructed and how it works ?We Answered:PV's are made primarily with silicon, boron and phosphorus. One wafer is made from silicon/boron and another wafer of phosphorus/silicon. The wafers are put into contact to each other at one end (the P-N junction). The reaction between the boron and phosphorus creates a magnetic field. When light then hits the PV cell it stimulates the electrons which are then given momentum and direction by the magnetic field creating an electric current.Charlene Said:What is the significance of the P and N junction semiconductors in a Photovoltaic cell?We...

Alan Said:I have just read an ad for Power4Home solar panel kit. Has anyone actually bought this kit/books. Is it a scam?We Answered:the old saying applies. if it's too good to be true, then it is FALSE.Wallace Said:DIY Solar panels for home?We Answered:check out some solar power websites Your panels will make DC and your house runs on AC. So you'll need an inverter, and batteries to even out the power (I hear golf cart batteries are good - better than car batteries). The power company is probably very wary if not flat impossible about you selling power back unless there...

## Photovoltaic Cells Cost

Vicki Said:Is the production or the manufacturing of materials used for productions of Photovoltaic Cells damagning?We Answered:of course. However the benefits do outweigh the manufacturing process in terms of BTU's used.Peggy Said:Need reliable info on the manufacturing of photovoltaic?We Answered:Check these reports:Jon Said:How much would it cost tocover my roof w/hurricane resistant photovoltaic cells to power my fridge & lighting?We Answered:It is not as simple as you would like for it to be, you are going to have to either contact, solar installers in your area, or choose a system by mail and install it your self. The link below will give...

## Photovoltaic Cells Efficiency

Francisco Said:What is the average efficiency of commercially available Solar Photovoltaic cells / panels today ?We Answered:large no of cells have been manufactured with areas 2*2cm, efficiencies approaching 10%, and operating at 28 degrees celsius.. for terrestrial applications, silicon solar cells have shown operating efficiencies of about 12-15% these are actual efficiencies but the theoretical efficiencies are of the order of 25%Rafael Said:The use of photovoltaic cells is limited by which of the following?We Answered:I'd go with A: low cost, or lack thereof. B is reasonable, too, if you're talking about dollars per watt efficiency C no. D There are some scales at which solar...

## Photovoltaic Cells How They Work

Erin Said:( Solar / Photovoltaic ) Cells?We Answered:this article about solar cells advantages and disadvantages should give you enough info. http://renewableenergyarticles.blogspot.…Patrick Said:What is the significance of the P and N junction semiconductors in a Photovoltaic cell?We Answered:to my understanding in the depletion zone is a large electric field which electrons can get swept away and accelerated thereby gaining energy, this is how a BJT works to amplify singlas. in the case of a solar cell the light striking the PN junction liberates electrons that are then accelerated by an electric field, this process creates a voltage (about 700 mv) and...

## Photovoltaic Cells Manufacturers

Larry Said:The wire gage system used to measure wire sizes is the?We Answered:1-B; 2-D; 3-C; 4-D; 5-A; 6-B; 7-B; 8-C; 9-B; 10-C; 11-A; 12-D; 13-A; 14-D; 15-C; 16-D; 17-C; 18-A; 19-C; 20-C (assuming this is ohms of resistance per foot?); 21-A; 22-A; 23-D; 24-B; 25-CDarrell Said:conductors, insulators, and batteries?We Answered:1 = b 2 = d 3 = c 4 = b or c ? 5 = b 6 = ? 7 = b 8 = a 9 = ? 10 = ? 11 = b 12 = d 13 = a 14 = ? 15 = c 16 = d 17 = c 18 = ? 19 = ? 20 = ? 21 = ? 22 = ? 23 = b 24 =...

## Photovoltaic Cells Modules

Minnie Said:When we say Photovoltaic Module of "200Wp" is it different to saying "200W" ?We Answered:Watt-peak is not a measure of area but rather a measure of output power from a panel that is illuminated at 1000W/m^2 and held at a temperature of 25 degC. It is the standardized measure by which various panels can be compared. Under installed conditions, output power can be higher since illumination can exceed 1000W/m^2 in certain locations at midday. So what it the watt vs. the watt-peak? If it is being used as the size of the panel, one would hope that it refers to the...

## Photovoltaic Cells Solar Panels

William Said:Can normal light power solar panels?We Answered:Well, you see solar-powered calculators run on room light all the time. However, there's not much point in running a solar panel on room light....

## Photovoltaic Cells Solar

Erica Said:Can someone find me a link that has Einstein defining solar cells (photovoltaic cells)?We Answered:read this wiki article, it was the Photoelectric Effect, there are lots of resources at the bottom of the page that might help further your research http://en.wikipedia.org/wiki/Photoelectr…Irene Said:I want recharge the battery of my cell phone with Photovoltaic (solar cells) is this possible?We Answered:Of course yes ,There are two options No.1. plug the cells to a storage device(Batteries) then use the invertor to convert in to AC and use your mobile charger as usual. No.2.Check the Charger out put dc and arrange the cell accordingly to produce that...

## Photovoltaic Cells Work

Kay Said:how do photovoltaic cells work?We Answered:Photovoltiac, (or solar), cells have light sensitive chemicals in them. When the light hits them, it causes a checmical reaction that results in the creation of electric. The actual amout of electric is smal, so it takes a lot of large cells to create enough electric to be useful.Tyrone Said:How does a photovoltaic cell work?We Answered:They convert the sun's energy directly into electricity. ­Photovoltaic cells are made of special materials called semiconductors. When light strikes the cell, a certain portion of it is absorbed within the semiconductor material. This means that the...

## Photovoltaic Manufacturing Process

Sandra Said:Is the manufacturing process of photovoltaic paneles bad for the environment?We Answered:Photocells are semiconductors, just like computer chips. In fact, computer chips have to be tested in the dark because photoelectric currents will skew the results. Semiconductor manufacturing does indeed require the use of some EXTREMELY toxic chemicals, some of which are actually chemical warfare weapons. However the final chip is not particularly toxic because only an extremely small amount of these materials actually get incorporated into them, and it is a very strong chemical bond. The main source of pollution would be manufacturing waste and things like lead based...

## Photovoltaic Module Testing

Heidi Said:How to save measurement data from Labview on Photovoltaic module test in a databank? Help!?We Answered:Yes. use a flash drive....

## Photovoltaic Panels And Cost

Ella Said:How can I calculate the cost savings of having energy efficient options on my new home vs. traditional options?We Answered:Take a look at what your energy consumption has been for the last few years. Chances are that the cost of energy will not be going down. There may be tax advantages to have the cost as part of your mortgage rather than as a household expense. The local utility company may be able to provide statistics of average energy use in similar sized homes with and without the upgrades.Rodney Said:After completing a photovoltaic course, can you start working...

## Photovoltaic Panels Cost

Marsha Said:how many photovoltaic solar panels can you fit into 1 acre of land, and any idea on cost?We Answered:1 acre has 4000 meters squared. You could put about 2000 m^2 of panels that would produce about 720 kilo watts peak and about 3500 kw-hrs of energy. The system would cost about \$5,800,000. You would sell about \$350 per day of power or \$130,000 per year before operating expenses, so net about \$100,000 when they fail in 25 years, you will have brought in \$2,500,000. OH well Obama will bail you out when he has placed himself in a...

## Photovoltaic Panels Efficiency

Marsha Said:Airplanes and Solar Panels?We Answered:Well, let's get the obvious out of the way first.....the sun itself. The panels would only be generating electricity when in sunlight, which means in daylight hours and above any cloud cover. Granted, a long-haul flight will spend the vast majority of its time above the clouds, so that may not be a huge issue. Night flights though, will be a huge issue. The next obvious issue is weight. I'd imagine that aircraft manufacturers would be extremely wary of adding any extra weight to a craft, especially a system that may not serve any purpose at...

## Photovoltaic Panels Manufacturers

Margaret Said:somebody knows abouit the panel producing electric from heat.?We Answered:I heard of a way of producing an electric courant by heating on side of a PN jonction made of two different type of metal. I also saw a alcool lamp with a collier all around that was producing enough electricity for a radio, that was realy long time ago ( may be 60 years ), that collier was made with near an hundred piece of two metal in alternance, and each jonction was a thermal diode....

## Photovoltaic Panels Price

Arlene Said:Are solar panel prices ever going to come down?We Answered:They are coming down and more states are helping with rebates. My break even time frame is about 6 years for my system, it would have been closer to 10 without the rebates. If you consider my system is guaranteed for 25 years, I'll be getting 19 years of free energy and the electric rates go up at least 5% annually. There is anothe way to make it more affordable. Several solar companies are offering lease options. Most lease rates are based on your current electric rate. With no up...

## Photovoltaic Panels Uk

Angela Said:How do you calculate the annual output from a photovoltaic array?We Answered:You will never be able to calculate this precisely There are too many variables. For instance: The efficiency of the panels, their rated output, whatever degree of fogginess hading there might be, the amount of shading, how often the panels are cleaned, the efficiency of the inverters, and whether you have batteries. Perhaps you can find insolation (this is spelled correctly) tables on the Internet. Knock off 15 or 20 percent of that figure, and you will be as close as you can guess it. Also look on the Internet...

## Photovoltaic Power Generation

Renee Said:are photovoltaic cells and solar panels the same? if not, or yes, what are their differences?We Answered:B_H is correct. The cell typically produces a small voltage of approximately 0.7V, although it can provide many 100's of mA in full sunlight. A panel is made up of many cells connected in series and in parallel to enable higher voltages and currents. A panel also includes protection for the cells in the form of glass or plastic so that rain, snow, dust, etc do not damage the individual cells. Cells typically are unprotected and made of silicon...

## Photovoltaic Power Plant

Mildred Said:Is nuclear power really the solution?We Answered:A lot of the problems associated with nuclear power come as a result of poor decisions by the atomic power industry during the 1950's and 1960's, which in turn led to somewhat onerous regulations being enacted in the 1970's. In a lot of ways, the nuclear industry needs a 'clean slate' of both regulation, but also of design, operating and design practices. In the early days, we were building the 'next generation' of bigger power plants before we had time to learn lessons from those we had just built. Lots of mistakes were perpetuated. Modern...

## Photovoltaic Power Plants

Alvin Said:Do u agree? electric cars does not make earth cleaner.?We Answered:And we still get more than 80% of our fuel from Oil, and just less than 50% of our electricity from COAL. http://en.wikipedia.org/wiki/Energy_in_t… We are EXTRAORDINARILY inefficient in our energy use, nearly 60% of the energy produced is wasted - http://simple.wikipedia.org/wiki/File:US… , meaning we are about 40% efficient with respect to having energy relative to getting efficient work out of it.6 So for me the notion isn't that electric cars are necessarily cleaner (although compared with a diesel) they are definitely cleaner from the consumer perspective. The big problem however, is...

## Photovoltaic Power Station

Brad Said:Is Big Oil/Big Coal lying about the negative impact of alternative energy ?We Answered:I know you're not supposed to answer a question with a question, but my answer is, "Is the Pope Catholic?"Derrick Said:how solar power station works? and principle of photovoltaic cells.?We Answered:A solar cell is usually a combination of materials, the photons in the sunlight strips electrons form one layer of materials to the other and moving electrons induces a current. Newer solar cells have multiple layers the work with the different wavelengths of the sunlight to increase the efficiency. Average power of sunlight on the earth...

## Photovoltaic Power Systems

Jack Said:how does a photovoltaic system that feeds back into the power grid get on the same phase angle? Or?We Answered:That's what the inverter takes care of. It synchronizes the phase directly with the mains phase.Clyde Said:What credits in (\$) do I receive back from Western Power for the excess power I feed back into their system?We Answered:I can't give you figures but will point one key thing... Installing a grid during construction is much easier than doing it post... if you're using an architect, he can tell you the best path. If not, the grid installer should be able...

## Photovoltaic Pv Cells

Veronica Said:Photovoltaic cells...?We Answered:add an amplifier, which can be just a transistor in common emitter or common source.Rosa Said:Since photovoltaic cells, placed on suitable residential roofs, in the right part of the country can usually?We Answered:It is not feasible for a government to loan such a thing only because governments are VERY SLOW to understand new technologies, and they don't know the difference between 1st gen solar cells and 3rd and 4th gen cells.... Also, at least the current *US* government would dismiss the idea as "liberal" no matter how good an idea it is, and never have it come to...

## Photovoltaic Pv Panels

Shawn Said:About solar energy I think...?We Answered:Sorry, there was no question. Solar energy is limited by the solar constant, as well as by latitude and obscurance. It is generally most needed where least available, and vice-versa. One of the most effective uses of solar technology for home heating is to build a house that's insulated for solar heating, and then to not install the solar equipment. The greatest payback often comes from the insulation alone. I'm sorry if my lack of answer does not match your lack of question.Jerome Said:how long will a 15 volt.15 amp photovoltaic in series take to charge a...

## Photovoltaic Pv Solar Panels

Kristen Said:Do I really need a resistor?We Answered:Yes. To measure the energy being collected the solar cells would have to be powering something. A resistor load is as good a choice as any. I will assume your final voltage from the solar cells is the rated 3.6 volts. You could then connect a 10 ohm resistor across the solar cells output. But before you do that, take your multimeter and measure the actual resistance of the resistor. Lets say it measures 9.25 ohms. Write that value down. 9,25 ohms. Now with the resistor connected...

## Photovoltaic Pv System

Rosemary Said:Those who speak English, can you help?We Answered:A comma after "workshops" makes the sentence a lot easier to understand. I am a native English speaker but I don't know the grammar rules that say when you are supposed to use a comma. Of course, grammar "rules" are supposed to DESCRIBE how language is written and spoken, not dictate how you write and speak. I would personally put a comma after "workshops", not because of any dorky grammar rule, but because it makes the sentence more easily intelligible.Jessie Said:Those who speak English, can you help?We Answered:I find that sentence awkward,...

## Photovoltaic Pv Systems

Roger Said:Grid Connected Photovoltaic System?We Answered:the power flows from the solar cells, to the inverter, to the grid. if the load is more than what your PV module can provide, or more than the rated power of the inverter, then your system needs modification. but how can power flow from the grid into the inverter?!...

## Photovoltaic Roof Panels

Peter Said:I'm considering getting the type of solar system on my roof which feeds excess energy back into the grid?We Answered:It's a good idea. The main problem is the cost. Figuring the cost and payback is complex and is completely dependent on exactly where you live. Whether or not it's "worth it" depends on where you live and what you're trying to accomplish. If you're just trying to save money, two things are the most important. How much sun you get and how much (if anything) your State will pay you for doing this. There's also some tax...

## Photovoltaic Roof Shingles

Billy Said:why are photovoltaic shingles for a roof better then roofs made out of tar and other popular roofs?We Answered:They're not. Photovoltaic shingles are cosmetic enhancements only, (so you don't have to see the panels), and exponentially more expensive than phtovoltaic panels. They also follow the contour of the roof and cannot be adjusted to the correct angle for maximum sun exposure. Conventional panels on a good quality roof are the less expensive option, and will also prolong the life of the asphalt roof under it.Clayton Said:This question regards nanoparticle photovoltaic electricity. Is there sufficient raw material to mass produce?We...

## Photovoltaic Roof Tiles

Willie Said:Building Intergreted Photovoltaic (BIPV)?We Answered:1. Most manufacturers I've seen will customize the system to the roofing you have available, so I'm not sure what the 'best' roof type is. You could contact a company that handles installation and ask, though the response may be different for different companies, depending on their procedure. 2. For pricing, you could have a look at the following pages to give you a rough idea of the cost of the components. It will depend on what type of system you want, if you want a stand alone system, a grid tied...

## Photovoltaic Solar Array

Christy Said:How Efficient are Photovoltaic Silicon Solar Arrays?We Answered:This video doesn't really show arrays. They seem to be a networking system that might be powering itself by solar, not generating extra electricity for the grid. Maybe the concept drawings at the beginning show that. Either way, it depends on what efficiencies you are referring to. Efficiencies have different understandings to different people.Angel Said:Is photovoltaic array another name for solar panels?We Answered:A photovoltaic array is 1+ solar photovoltaic panel, the kind that produces electricity. All photovoltaic panels can be put together to be part of a photolvoltaic...

## Photovoltaic Solar Cell Efficiency

Lauren Said:Need help with a chem question?We Answered:power reqd = 385/30 kW per month = 385/(30*8) kW/day = 1.60417 kw per day efficieny = 15% .15 kW requires 1 m^2 1.60417 kW requires (1/.15)*1.60417 m^2 = 10.69447 m^2Frank Said:Would Reflecting Mirrors Make Solar Energy?We Answered:This question is worth a look because while it's true that solar cell panels have a relatively low photovoltaic efficiency, why not keep bouncing the same beam of light on it, sort kind of like redepositing the same bad check at the bank until it goes through? Assuming that unabsorbed light reflects from the solar panels...

## Photovoltaic Solar Cell

Mitchell Said:Would you please tell me how can i make a solar cell or photovoltaic cell? how can i find pure silicon ?We Answered:Cooking your own silicon wafers is well beyond a reasonable home do-it-yourself project. Processing your own silicon requires clean room conditions that would make the cleanest household look like a hopelessly dusty mess, serious vacuum pumps and other equipment, oven temperatures in the thousands of degrees, and more. College courses exist where you learn how to do this stuff. Meanwhile, you are much better advised to get your photovoltaic cells already made.Andrea Said:Could you...

## Photovoltaic Solar Cells

Diana Said:How can a photovoltaic solar cell work in a circuit?We Answered:As a resistor whos value is varied by light intensity.Sandra Said:what are the advantages and disadvantages of flexable photovoltaic solar cells?We Answered:Flexible cells are printable much like solid state circuits which reduces their cost dramatically. Also, unlike delicate contemporary solar panels flexible cells are more durable and less vulnerable to weather. Typically solar panels should last 30-40 years but (concievably) flexible panels should last even longer. Efficiency of solar panels between current and flexible cells is comparable with rates of 10-15% which is still not enough to make them really...

## Photovoltaic Solar Collectors

Ben Said:Solar Energy Questions- Geography- needs confirmation on my answers?We Answered:this answer shocks me, but its A. read the article on the link, very informative. Mirrosr are used in a trough system, the heat from the sun is focused on a tube filled with liquid... read the article, its cool...

## Photovoltaic Solar Electric System

Martha Said:Clusters of non-polluting wind turbines are called:?We Answered:c. wind farms...

## Photovoltaic Solar Electricity

Seth Said:solar energy can produce electricity in a photovoltaic cell containing______________?We Answered:siliconHilda Said:solar panels that turn most of the light into electricity?We Answered:Solar energy is very viable now, even though the efficiency of the panels on the market now is in the 10-15% range. Much work is being done to develop cells with multiple layers, each capturing photons at a different band gap. Work in the lab is achieving efficiencies up to 40%; others are achieving customary efficiencies at much lower cost, or with more flexible form factors....

## Photovoltaic Solar Energy System

Oscar Said:Performance of a single crystal solar cell under concentrated sunlight?We Answered:It's possible, but you need to avoid the cell reach high temperatures, for this applications AsGa cells are much better than silicium(Si) cells, because AsGa are more efficient and are much less disturbed by high temperatures(but they need cooling too...) By the way....concentrating sun you don't obtain higher volts, but only higher current, because cells have a fixed voltage.......

## Photovoltaic Solar Energy

Edwin Said:Where in the world is there undergraduate degrees in renewable energy and/or sustainability?We Answered:I think Slippery Rock UniversityMarvin Said:Which is better-Mechanical or solar energy engineering???We Answered:Hello, I'm finishing my mechanical engineering degree very soon. What the mechanical engineering degree gives you is lots of options. You can go just about anywhere. I've never actually heard of solar power as an engineering discipline; however, I'm guessing that as far as jobs go, you should be able to get a solar power engineering job with a mechanical engineering degree, but not necessarily get your average mechanical engineering job...

## Photovoltaic Solar Modules

Frances Said:What publicly traded companies only manufacture silicon, the basic material used to make photovoltaic solar moWe Answered:Not to be a nitpicker, but silicon isn't manufactured by any company. It is a naturally occuring basic element with an atomic number of 14. Check the periodic table. Silicon is usually acquired in mass from commercial mining operations, then sent to, for instance, semiconductor companies that make the kind of modules you're interested in. You could conceivably look to invest either in the mining companies or in semiconductors. Before you do either, you should definitely educate yourself about both, and probably about the...

## Photovoltaic Solar Panel

Shirley Said:Do solar panel cell phone chargers actually work?We Answered:i couldn't find that many reviews but what i did find shows that it is a good way to go here`s the links i found http://www.12voltsolarpanels.net/charge-… http://reviews.cnet.com/4520-11288_7-642… http://www.nextag.com/solar-cell-phone-c…Calvin Said:how do solar photovoltaic panels work?We Answered:Hey E Girl, photovoltiac panels are pretty simple. They start with a solid block of silicone, and shave thin layers off of them, called wafers. Once you have about 72 of them, you take half of them and dope them with boron, then the other half are doped with phosphorous. Once that's done, they take one each...

## Photovoltaic Solar Panels Cost

Rosemary Said:If you want to rely on solar electricity exclusively, how many solar panels will you need to buy?We Answered:Since there are 24 hours in a day, to be completely off-grid you also need battery back-up, a charge converted, and an inverter. Buut I digress. I think the questin is asking how to generate peak power of 2 kw 1 solar panel generate .5*0.75*0.10 kw 0.0375 kw for 2 kw 2/0.0375 54 panels the square footage is 27 m^2 291 square feet. the cost is 54*63 \$3,402 at 2 kw/hr 3402/(2*0.08) hours 21262 hours _____________________-...

## Photovoltaic Solar Panels Work

Bobbie Said:Why did Obama give a green company \$535 million dollars of taxpayer money to squander?We Answered:Green has yet to pay for itself an risky gamble when the country is broke an we have a President that hates coal,oil, an natural gas....

## Photovoltaic Solar Panels

Leonard Said:photovoltaic solar panels for home?We Answered:this site has a lot of informationJacqueline Said:High efficiency photovoltaic solar panels?We Answered:Not too long ago the US Gov gave Evergreen a large grant (I don't think they had to pay it back) to build a cheaper solar module. Well they did it and really cut their cost big time. But if you notice the Evergreen solar modules sell for about the same as any other. A little less then some and a little more then others. So it all comes down to the same thing, the tax payers got it up the rearend...

## Photovoltaic Solar Power Plant

Lillian Said:Solar Panels Required, Good Idea or Not?We Answered:Great ideaDuane Said:The Interdependence of Life?We Answered:very.Bobby Said:Why do YA libs continue to spread the lies of the Democrats when it is proven there statements are such?We Answered:Don't use facts since they are dismissed by libs who prefer to rely on history as they rewrite it. But feel free to ask them why wind generating plants off Cape Cod and Long Island and other plants in the Great Lakes were all rejected by Democrats. The most economical and reliable method of power generation is nuclear power. But the eco-terrorists have used their lies...

## Photovoltaic Solar Power System

Renee Said:What do they mean by "magnify" sunlight?We Answered:A better word would be "concentrate". "Magnify" seems to suggest getting something for nothing. I agree that the article doesn't adequately explain the physics of the product. However, it's true that photovoltaic efficiency can be increased by applying more intense light (see ref. 1). If they can get 37%, that's pretty impressive. To me (who's been around the block a few times) it's ironic that we're going back to the first transistor material, germanium, with all its temperature problems. Incidentally, cost per kilowatt-hour is a very pliable number. It's based on size, efficiency,...

## Photovoltaic Solar Power Systems

Herman Said:How to calculate COP for the following system?We Answered:Equation used for calculating COP are only applicable for refrigeration systems i.e. COP = heat removed / work input so use Power input = VI to derive the work input/ time and to calculate the heat removed/ time , you have to use source and sink temperatures...

## Photovoltaic Solar Power

Gary Said:What countries use solar electricity as a source of energy?We Answered:here's section with some articles that could be helpful to you http://renewableenergyarticles.blogspot.…Marcia Said:Can we use solar energy for powering a aerobot (flying robot) by using photovoltaic solar cells on board?We Answered:yes,solar energy can be harness in a space mission but the photoradiation about which are talking is very weak so it is can become as main fuel but we can use it as alternative source...

## Photovoltaic Solar System

Edith Said:who's person that's design or patent photovoltaic (solar energy) and solar thermal system?We Answered:check in google.com/patents...

## Photovoltaic Solar Systems

Becky Said:can you explain in your own words what kind these solar energy words mean?We Answered:Photovoltaics (PV) is the field of technology and research related to the application of solar cells for energy by converting sunlight directly into electricity. Due to the growing demand for clean sources of energy, the manufacture of solar cells and photovoltaic arrays has expanded dramatically in recent years. Active solar systems use solar collectors and additional electricity to power pumps or fans to distribute the sun's energy. The heart of a solar collector is a black absorber which converts the sun's energy into heat. The heat...

## Photovoltaic System Costs

Clinton Said:What is the impact on the environment of "Green" energy?We Answered:all energy is the same, the waste that each type generates is the only difference...Laura Said:What is the impact on the environment of "Green" energy?We Answered:I agree that the downsides of "green energy" should be researched. Let's just make sure we're not doing it to somehow prove that there isn't a need for green energy. Continuing with oil production without looking into alternatives is certainly a mistake. Whether or not there are downsides to green energy still doesn't address the problems that an oil dependent economy poses. Perhaps one green alternative...

## Photovoltaic System Design

Carrie Said:When doing a Photovoltaic grid connection...?We Answered:i am not sure, both should work same way but i doubt that any utility company would be ok with users connecting anything to the grid before meter. if one has access to power before meter, what prevents them from stealing power?Brandy Said:How can i find out how many photovoltaic modules I need?We Answered:150 watts for 1 hour, means, presumably, 150 watts continuous? Modules come in various sizes. Calculate the total power first. But there is a lot of missing information. Is the 150 watts load 24 hours a day? How many hours of...

## Photovoltaic System Sizing

Clara Said:Multiple layout/formats in same Excel workbook?We Answered:You could try making custom views (View>Custom views). Set up the sheet(s) to display and or hide relevant information for each scenario you need then save each as a different Custom view. By selecting which view to use will print only what is displayed....

## Photovoltaic Systems Costs

Elizabeth Said:Solar Cell concentration?We Answered:Hey Yoyo, Roderick and MTR are both correct on this one, but I'm not sure it gets to the heart of your question. You can concentrate photons onto any type of photovoltiac device and it will not increase it's efficiency one bit, but it will increase it's power output. It is like putting a larger fire under a water heater tank. It still has the same efficiency, but is getting much more heat. In the end, that small tank will probably burst. Multijunction panels are more efficient, that is, they convert...

## Photovoltaic Systems Engineering

Terrence Said:Where can I find solutions manual? Help!!!?We Answered:Information is below.Warren Said:question about digital systems?We Answered:let's look at a typical parking voucher dispenser, as seen in Toronto. its back-lit, LCD screen displays time of day and amount of money; and it accepts coins or cards, and prints vouchers. during the day, this thing works on photovoltaic cells. but it keeps working until well-after dark, (up to 9 or 11pm when parking becomes free, and still keeps its clock running until morning.) To do this, it must store excess energy from the photovoltaic cells during daylight, and draw that later. There are...

## Photovoltaic Systems Installation

Jordan Said:Solar Panel Business?We Answered:Definitely an electrical license, possibly a G.C. license (depending on exactly what your business will do). I don't live in Georgia, so there may be another specific certification you will need to get, but it will be nothing compared to getting an electrical license. You could always subcontract a licensed individual too, or work under their license... Just a few things to consider.Rick Said:how do i calculate annual feed in tariff for a 3.96kw south facing photovoltaic system in the uk?We Answered:Wish I could help. Thats a tough question....

## Photovoltaic Systems Price

Shirley Said:Are their any inventors out there thinking up other ways to power a car ?We Answered:Yes indeed. I have developed a self recharging system for an EV that essentially could extend the range of a typical EV to thousands of miles between charges. Now trying to purchase a test mule to put the system in... trying to to get a Tesla but they will take a year to deliver. Perhaps a Toyota if one can be found might provide the right test mule for us to prove it our in public. Thus far, on a bench, we get literally...

## Photovoltaic Thin Film

Emma Said:(The question can be located below...)?We Answered:The area for 3cm x 4cm = 12 square centimeters or 0.0012 square meters. The full sun is around 1000W/m^2, so the power on the panel from the sun is 1.2W. As the panel is about 10% efficient, the actual power delivered to a suitable load would be around 120mW.Corey Said:Where to buy? Thin film photovoltaic laminate solar panels? I want to install them myself?We Answered:You can get amorphous silicon panels at the link below. However, be warned that thin film is generally NOT the choice most people make, because it degrades...

## Photovoltaic Tracking Systems

Helen Said:Green House effect and Egypt's Joseph Requests solution.?We Answered:I appreciate your sincere concerns and positive ideas given. Indeed we have to think seriously about these things. Even when I was in govt service, much was talked about these options in various forums, attended by senior administrators (IAS) as well. But the govts unfortunately are not that serious about good advices of the experts and fritter away precious govt resources in provision of sops to win votes, rather than look beyond and do something concrete for the people. The photovoltic options are still costly and more cost effective way of tapping...

## Photovoltaics In Buildings

Clifford Said:Do you think they should have this kind of glass on skyscrapers?We Answered:There are four sides to a building. Putting photovoltaic glass (very expensive) on the side with the most sun exposure would mean also exposing that side to the heat of the sun with increased air conditioning cost that would probably out weigh the gain from electricity. Adding wiring to all the windows would be additional expense and since the photovoltaic glass is probably low voltage, which would make it safe to move, it would be high current, which would require heavy wire to reduce power loss....

## Photovoltaics Solar Panels

Kristin Said:Just how do the BNP will get the tax payer to fund the solar panels?We Answered:But the BNP can promise what they want, secure in the knowledge that they will never have to deliver. The British people will not elect a single BNP MP, as they know that the BNP are a bunch of racist thugs. Here's one promise that Nick Griffin would try to keep, however (no apology for repeating it) "Without the White race nothing matters [other right-wing parties] believe that the answer to the race question is integration and a futile attempt to create "Black Britons", while we...

## Pics Of Solar Energy

Bryan Said:Stock tips?We Answered:Although solar remains a good play for the future; I continue to like names in the energy sector, these include: ME (Mariner Energy) VLO (Valero Energy) ATPG (ATP Oil and Gas) Mariner and ATPG are involved in some key deepwater projects in the Gulf of Mexico and both companies have rapidly rising reserves, as well as key personnel and equipment, some very sharp oil finding engineers. Valero has been beaten down off its highs while at the same time, refiners continue to be pushed to the brink of their limits, and it does not appear that they are going to build alot...

## Picture Of Solar Energy

Clara Said:Energy Chains Homework Help!?We Answered:This link should give you a couple of ideas on what to do.Cassandra Said:what are some disadvantages of solar energy?We Answered:Hi friend, There are many more advantages than disadvantages of solar energy. * The initial cost is the main disadvantage of installing a solar energy system, largely because of the high cost of the semi-conducting materials used in building one. * A solar energy installation requires a large area for the system to be efficient in providing a source of electricity. This may be a disadvantage in areas where space is short, or expensive * Solar energy is...

## Picture Of Solar Panel

Georgia Said:Can someone post links to some pictures of the solar power manufacturing process? ?We Answered:Here is a video by my company: http://oerlikon.com/ecomaXL/index.php?si… Our Tandem (a-Si/uc-Si) Thinfilm Cell process is one of the various technologies used to make solar cells.Douglas Said:GEOMETRY HELP?!?!?!!!?We Answered:solar panels usually make 14 watts per hour, but that info inst given so lets ignore it. NOTE: * means 'multiplied by' 14 watts * x panels= 4200 watts, so x panles = 4200 / 14 x panels = 300 panels of one-sq-feet each, or total area of 300 sq-ft. now, u cant have 1 panel that has a total size of...

## Picture Of Solar Panels

Craig Said:Are my solar panels charging?We Answered:The fact that the batteries look corroded with the white stuff is a good sign that the batteries need to be replaced. They are just like car batteries and rarely last more than 4 years. Your symptoms match those of weak batteries. Get a volt meter and check each battery. They should be in the 13v-14v range. They all should read about the same voltage. living off the grid is expensive so be prepared. Also solar panels have a life span too. The average is about 20 years of life and then they need...

## Pictures Of Solar Cells

Lillian Said:Is this a well-written, helpful review?We Answered:Didn't read past the first line because it was pretty bad. I hadn’t had to wait long?????? COOMEEE ONN!!! Also it is waaay too long. Try to be concise. No one is going to read that. A couple of well chosen lines would suffice.Jane Said:Is it possible that the universe is nothing more of a braincell of another life form?We Answered:There is a time in everyone's life when they have this idea. Although it seems to make sense at first, the comparrison quickly falls apart. On a large scalr structure, it doesn't appear to work. If...

## Pictures Of Solar Energy

Dawn Said:Help answering some questions about wind generated energy?We Answered:1. http://www.renewables-info.com/energy_ne… and http://www.renewables-info.com/renewable… 2. http://www.renewables-info.com/drawbacks… 3. the same link as No.2 4. http://www.renewables-info.com/interesti… 5. 6.7. more or less in this article http://www.renewables-info.com/wind_ener… P.S. have fun :)Bertha Said:Would like to install either solar or wind energy into my home. Tons of questions,battery's.size of windmill,c?We Answered:For Solar Energy, you're going to have to put in at least \$20 - \$30,000 for the panels. You're going to have to have some sort of storage tank for the stored energy to be released by your Solar Panels into. With extra energy, you can sell it to power companies...

## Pictures Of Solar Panels

Marjorie Said:what grade would you give this short gcse geography end of topic writing?We Answered:Mm... It should be useful. http://outlet-mall.info/332586/used-solar-panelsRaul Said:Need a fast hot dog solar cooker?We Answered:Check out Youtube solar ovens.Alexander Said:What things are needed to run a greenhouse?We Answered:I have just finished building a solar room addition. When I put plants in it I will call it a greenhouse. A greenhouse of any style is an attempt to modify the environment. Glass or plastic walls and roof are often used because they allow sunlight to enter. Inside it becomes heat. There are a...

## Portable Solar Power

Phyllis Said:what kind of a solar powered panel do I need to charge and power small devices like a portable radio and a fla?We Answered:These are pretty cool, very portable and very reliable: http://www.spheralsolar.com/65wattfoldin… I can't tell you exactly if it will power your devices but these folks can tell you if you have the information on your radio, etc.Francisco Said:What can anyone tell me about good portable solar power equipment?We Answered:dasa751 Lots of good ideas here -- note the ratings too: http://bit.ly/gFGh4 Lots of neat things -- I want one of each! For example: hybrid solar chargers for blackberry, iphone, nokia foldable solar array foldable solar chargers solar...

## Price Of Solar Cell

Annette Said:What is solar cell? where from i can get /purchase and use it on my own application, and how much it cost? and?We Answered:I'm not sure what country you're in, but in the US, you can find individual solar cells at http://www.goldmine-elec-products.com/pr… But if you were interested in ready-made panels, then just Google "solar panel prices" and you'll see dozens of places offering them. Pricing for solar panels is about \$4 a watt for larger panels, \$10 a watt for smaller ones. So a 200-watt panel will cost about \$800, and a 10-watt panel will cost about \$100. There may...

## Price Of Solar Cells

Jon Said:Are solar cells really that great of an investment if you have a whole roof of them?We Answered:depending on the state you live in is a big factor. Calif for example will rebate you 2800 for every kilo watt your system is rated. a 10KW system would create a \$28,000 rebate. i am preparing to do it. factor in current utility prices it should pay for itself in 8-10 yrs. then it is not only zero cost, but they will pay you for the excess your system generates ( if it's a grid tied system). grid tied is cheaper...

## Price Of Solar Panel

Viola Said:Solar panel research?We Answered:For panel sale price on a per panel basis you can check Google Shopping. They will also have the specs there. When you say production volume are you referring to manufacturing volume Worldwide?...

## Price Of Solar Panels

Ray Said:what is the price of solar panels?We Answered:very expensive... If you give more details...so will IIrene Said:Solar Panels: PRICE PER PEAK WATT?We Answered:Watt peak is the amount of power that a PV module is able to supply when it receives 1000 watts per square meter of solar irradiance. A simpler but not as accurate definition is watt peak is the amount of power that a PV module produces at noontime when the sun is directly overhead and there are no clouds to block it. found the following online. Not too good in the grammar department tho. Watt peak is the...

## Price Of Solar

Arthur Said:The establishment of a solar monopoly which raises the price of solar energy to Debbie’s ovens?We Answered:This is similar to the increase in wages because they're both extra costs to making the product. Supply shifts to the right, which increases prices and decreases quantity.Leslie Said:What is the price of a solar shingle?We Answered:One shingle will produce an average of 15 watts of power. The average price is about \$10-\$12/watt. ie: a shingle costs \$100-\$150.00 ea. Average price to convert an 2000sq.ft. home to solar power is in excess of \$50,000.00 average lifespan/warranty on solar shingles is 20-25 years They will never pay...

## Purchase Photovoltaic Cells

Jeffrey Said:Questions about a Photovoltaic Charger for a Cell Phone...?We Answered:My suggestion would be to make it comply with USB power requirement (500mA at 5V.) Then it could be used with pretty much any phone. You can use lower voltage cells, then boost to the 5V level with a switching step-up converter. The main thing is to have enough wattage. If for example you have only 2.4V@100mA, then this will be only 4.8@50mA... not enough. You need 500mW of cells, with some margin - I suggest 750mW. Good luck with your project......

## Purchase Solar Panels

Johnnie Said:How to write a contract to share the purchase of solar panels?We Answered:This might be more complicated than you want to handle. Depending on state and incentive structure, you might need to set up a business or partnership between you so that you can share the money flow and the tax credits. To find out the incentives and tax credits, check out the DSIRE homepage: http://www.dsireusa.org/Derek Said:Where is the best and cheapest on-line store to purchase solar panels? For our home, in Southeast Texas?We Answered:A solar power system is not a self help project. Hire a...

## Pv Panel Cost

Brittany Said:Three part survey -- please only honest answers?We Answered:1. yes 2.No. because we already did it 3 years ago. Husband is at this moment working on a new wind generator design. 3. I currently pay nothing, would be happy to install more panels if you will pay me to install them! Methinks your questions did not cover the situation of existing solar users! Further comment : our system only just works for us, with minimal household electricity use and living in sunny South Australia. In winter we need to boost power with a petrol generator maybe a couple of times a week.(Not environmentally...

## Pv Panels Cost

Melanie Said:Does anyone know if they will begin selling the compressed air car in the US?We Answered:should be out this centuryTerrance Said:Do solar energy panels for your home make sense?We Answered:As single home solution might not be cost efficient when you try to use the energy "1:1" in your home. The concept is to use an array of solar panels on roofs and feed the energy into the grid. Here is an article from CNN from today which shows how it is done in CA, the article mentions companies which are active. In NJ the concept is that solar panels are installed on roofs...

## Pv Panels Prices

Lois Said:PV Solar - for home hydrogen production ?We Answered:Natural gas is still dirt cheap even though it has risen dramatically over the last few years. As it stands, natural gas is still a waste product that is essentially flared off at the well head because it is too expensive to build a second set of pipelines and the pumping facilities to bring the gas to market. There are efforts to use portable gasification and Fischer Tropsch reactors to convert the natural gas to a form of synthetic crude which can be brought to market with...

## Pv Panels Solar

Corey Said:Starting PV company? What training is mandatory for applications of solar panels?We Answered:It would be better to work for an established solar company for a while, to learn the business. I don't know what the Texas requirements are, but for California, there is one type of license for installing panels, and another for hooking them up (which is just the same as an Electrician). There is also a C-10 kind of license that does both. You need to pass a State exam to get these certifications, and have to log a certain number of practical hours in the...

## Pv Solar Companies

Justin Said:How Big would Power Plants need to be if homeowners owned Solar PV Connected to the Grid w/Net Metering?We Answered:Not sure of the numbers but you are addressing it correctly . The day time panels reduce the day time demand and the plant can run without " peak " production . Every bit of power the small units produce is less that will be on the demand .Sherri Said:We have the solar panels, we have the land, now what?We Answered:Are you sure you want 50 MW ? Enough for a town of 40,000 homes ? This is out...

## Pv Solar Energy

Lewis Said:How much energy does a 1 KW Solar PV system produce?We Answered:It's easy to mix the terms "kWh" and "kW" but it can confuse listeners. kW is power. If you expend a certain power, say 2000 watts (= 2kW) for an hour, you've spent 2kWh in energy. (You probably understand this; apologies as needed...) The solar industry around me, 25 miles east of San Francisco, says that a mounted solar panel (which doesn't track the sun) will get the equivalent of 4.3 hours of sunlight on an average day. I had a company quote a small 1.5 kW system (4...

## Pv Solar Panel

Enrique Said:what are the components used for pv solar panel and procedure for the same.?We Answered:Are you asking about making your own solar panel? It is very difficult to make a solar panel. There are some web sites that show you how to make a wet solar panel just for the fun of it, but the efficiency is abysmal. Even commercial solar panels range from 5% to 15% efficiency. Supposedly, the best commercially available panel is 21% efficient. There are some research panels that are reported to be in the 40% range, but they are...

## Pv Solar Panels

Glen Said:I have a ton of questions about Photovoltaic (PV) Solar Panels...Please Answer?We Answered:You may be interested in these free educational videos we put together to help people with the same questions about what the heck is solar. http://www.altestore.com/store/Books-Cla… No catch, no scam, just free info!Roland Said:Do I need a specific solar license to install PV panels ANYWHERE in the US?We Answered:I think it goes state-by-state. In California, a C-10 contractor's license is enough to put up panels and connect the necessary equipment. Check the site below, there are materials for exam prep. Maybe some places don't...

## Pv Solar Power Systems

Leslie Said:if i use 1480 kilowatts per month and i add a solar system that has 6 , 170 watt what % will i save on e-bill?We Answered:How much you save depends on a lot of factors, including whether you energy bill is tiered (kWh's over a certain baseline cost more), and where your house is located. Between Arizona and Maine, there can be a 2:1 difference in energy harvested. Our house is in San Jose, California. Our system is about 3 times the size of yours, and our electrical usage was 1/3 of yours, before we got the...

## Pv Solar Power

Theodore Said:Do People use LESS power at night, than during the day... so why not use solar PV connected to the grid?We Answered:Actually most utilities are forced to buy power from Solar PV installations and the Utilities are forced to pay ridiculously high prices for power from Solar PV even though there are many cheaper sources out there The Corrupt incompetent Radical Extreme Leftist Democrats want us to pay for the ridiculously expensive Solar PV boondoggles.Rodney Said:Can PV Solar Power be less cheaper to install and run?We Answered:Consider energy efficiency first then solar power. Energy efficiency is cheaper to implement and...

## Pv Solar Systems

William Said:How do I get started to set up a 500 watt a day or so PV solar system?We Answered:First thing:  you need to correct your units.  A watt is a rate, like a mile per hour.  What you want is watt-HOURS, which a quantity like distance (miles).  You can get 500 watts out of something the size of a flashlight battery, but you'll only get it for minutes at the most. Getting units right is important; if you use units wrong, you can get answers that are completely misleading and waste a lot of money on something that won't work. If...

## Pv Solar Uk

Lois Said:Who Lives Off-Grid In The UK? Looking To Interview People For My Sustainable Website www.HomeBrewPower.co.uk?We Answered:In the uk, there's a lovely lady i know who lives in a straw bale house, as far as i know she is off the grid. Her name is Caroline Barry, she is a councillor for Mendip area, Somerset. There is also the communities at Tinkers Bubble, Kings Hill and Dragons Hill, all around Somerset area, they are bender communities and living in assorted low impact dwellings. I also have some horse drawn friends who live all year round in their horsedrawn...

## Renewable Energy Jobs

Maria Said:Will there be lot sof jobs for renewable energy engineers in the future?We Answered:yea renewable job ...would be greate for mechnical and elecrical degrees But another area to think of is environmental engineering....huge job promise in this area...for the futureDeborah Said:Where to look for jobs in renewable energy?We Answered:ask them if their force is also renewable...Patsy Said:How much renewable energy can be created and how many jobs would be created with 700 billion dollars?We Answered:The impact would be astronomical. As it is I am trying to fill in the last couple pieces to start a renewable energy (electricity, heating,...

## Renewable Solar Energy

Kurt Said:I am stuck on an island and i have to transfer energy using renewable sources. e.,g, biomas, solar energy,?We Answered:use steam from the springs .....thats all i could say...but where do you have to transfere the energy to?Alan Said:I want to write a research paper on renewable energy pertaining to solar and wind?We Answered:Hey Jacob, good project. I'm pasting an answer from an earlier question along with some explanation and sources for you. Sorry it's so wordy, but your question is pretty open ended. If you invest properly in solar or wind power today and take advantage of...

## Residential Solar Electricity

Lucille Said:Solar Panels: How long will it be before solar panels are cheap & effecient enough so that everyone?We Answered:Solar panels are cost effective if they are used over their payback period. The problem is that the down payment is expensive, and the payback period is maybe 10-20 years, so very few people actually expect to own their homes for 10-20 years. It also only really makes sense in areas that buy back electricity generated during the day when you're not using it. In Germany and other european countries, power companies are required to buy back electricity...

## Residential Solar Energy Systems

Jimmie Said:If its so hard to get gov. solar incentives in Canada, why don't companies offer rebates, then write them off?We Answered:I know of one company that does. Also some companies will try to get you financing through a bank but this is not a common practice in Canada yet.Leslie Said:Energy meter recommendations?We Answered:Dude. That is cool. There is a couple who put their whole installation journal on the web from Mamouth out in California. They were able to do it but their devices, costs and time to get there seemed difficult. So if you do...

## Residential Solar Energy

Paul Said:Can you take a Residential Energy Credit for solar accent lights?We Answered:No, solar accent lights do not qualify for the credit. Here's a listing of what qualifies for the credit: http://www.energystar.gov/index.cfm?c=ta… Note what it says about photovoltaic panels: Photovoltaic systems must provide electricity for the residence, and must meet applicable fire and electrical code requirement. The rinky-dink photo cells on accent lights merely recharge internal batteries on the light unit itself. They do not provide electrical power to the residence and as such do not qualify for the credit.Clara Said:Which company provides Residential Solar Energy Systems in...

## Residential Solar Panel

Deanna Said:solar Panel in residential area in mumbai is it worth?We Answered:call up just dial . they can help u . Gawde Solar Energy 09820809051 Gawde Solar Energy is Manufacturing Company (Mumbai-Maharashtra) ATASH SOLAR WATER HEATING SYSTEMSMV ROAD ANDHERI EAST, Mumbai 400059, MAHARASHTRA p: 28500970 http://www.atashsolar.com Email ATASH SOLAR WATER HEATING SYSTEMS...

## Residential Solar Panels

Max Said:where can I get free solar panels for my home?We Answered:i don't really know about completely free solar panels, but you can get information about the best priced ones and how to do it yourself in my site www.ecologyforlife.infoTerrence Said:Solar Panel Prices - What's The Cost To Build Or Buy A Residential Solar Panel?We Answered:A single solar panel with 12V electric output costs between \$100-250 to buy or build. Most of these are the portable variety (which cost less) and is a good way to reduce dependence on your utility company and generate your own electricity. A residential solar panel...

## Residential Solar Power Systems

Martin Said:Is it time to throw the greens under the bus?We Answered:nuclear? really? do you honestly think that any city would want a giant red target that says "terrorists: please strike here"? plus no one wants to house the nuclear waste as it is, heck no one even wants to allow the transfer of nuclear waste across their state. and as far as your criticism of solar energy- solar is only part of it- no one is saying there is one magic solution. they are saying that solar, wind, geothermal, tidal power plants can help us bridge the gap to sustainable...

## Residential Solar Power

Rose Said:Anybody out there using a solar heated stirling engine to generate residential electricity?We Answered:Yes But I live in EnglandFrancis Said:How do you get a home or business powered by solar power in New York City?We Answered:Most all public utilities allow you to grid tie a solar electric system. Just how much will they pay you per kWh is the question. It looks like NY has a lot of incentives, Check out this link to find out what the incentives are in your state. http://www.dsireusa.org/library/includes… Total the kill a watt hours for the last 12 months from your electric bills. You would normally...

## Residential Solar Systems

Michelle Said:How can i get the best residential solar power system possible?We Answered:I recomend useing a Solar Panel - Hydrogen Fuel Cell hybrid. It doesn't have all the draw backs of batteries. The link below is just one I googled, there are many more. Remember batteries pollute more then a than the electric company's power generators. Hydrogen fuel cells also have the advantage of emitting pure drinking water as a byproduct. NASA uses fuel cells not only to power space craft but the provide a lightweight way to store water.Donna Said:Would you invest in a residential solar power system...

## Sharp Solar Panels

Sheila Said:How many solar panels would I need to power my washer machine?We Answered:Solar panels produce power in proportion to the amount of sun light and inverse proportion to the temperature. To use solar power you will need in addition to the panels a bank of batteries a charge controller and an inverter to convert to 120v. The panel(s) will only be used to recharge the batteries and the batteries connected to the inverter is what is going to run your washing machine. You therefore need to know how long is the machine going to run, how...

## Silicon Photovoltaic Cell

Misty Said:can someone check my solar cells process definition?We Answered:Looks alright to me. You may want to mention energy bands. Outer electrons are technically in the Valence band of the semiconductor and in our best models this energy band spreads across the entire lattice; they're not really associated with a particular atom, so saying an electron escapes an atom (in most cases) isn't exactly correct - it escapes the energy band. Say that when the electrons receive energy from photons, they move from the Valence band to the Conduction band, which leaves a 'hole' in the Valence band. These charge carriers...

## Silicon Photovoltaic Cells

Janet Said:In photovoltaic cells, electrons flow from boron-enriched silicon to phosphorous-enriched silicon to generate?We Answered:boron is n type phos is p type current goes form n to p electrons goes from p to n electrons go from Phos to Boron doped FALSERebecca Said:Those who speak English, can you help?We Answered:Photovoltaic cells are devices that convert light into electricity. Silicon is sliced into wafers, which are used to produce cells, which are connected into modules that produce electricity. Different companies produce these items, each adding value to their product before moving it along to the next level. It would be similar to a steel plant supplying metal...

## Solar And Wind Power

Alice Said:Solar or wind power? Is there a company provider that doesn't cost thousands to install? Can be hooked up 4 leWe Answered:check places such as ebay for used parts and learn how to set it up yourself. for example: Solar panels that are 10 years old may be bulky, but they produce almost as much energy and costs a lot less.Howard Said:How will solar power, wind power, and lightweight cars help individuals and businesses in the future?We Answered:It will help because for the most part, the energy that humans mostly use today is coal and other fossil fuels. Since...

## Solar Cell Company

Kirk Said:Where can I buy solar cells in Sydney, Australia?We Answered:Dick Smith Electronics -- Sydney CBD (Large Store) Basement Tenancy 6 413-421 George Street Sydney NSW 2000 Phone (02) 9262 5799 Fax (02) 9262 1952 www.dicksmith.com.auJoan Said:do you know a company making cheap solar cells (better placed in asia)???? thanks.?We Answered:I don't know exactly what you're looking for, but this might be a start. I've never used this company's solar products, but I've bought rechargeable batteries from it, and they were fine. Put "solar" in the site's product search.Lucille Said:y the cellphone r not having solar penal 4 charge the cell Battery (dual charging system )...

## Solar Cell Cost

Mae Said:How much would a typical solar cell cost to buy? ?We Answered:There isn't really a "typical" solar cell, any more than there's a typical bicycle. The tiny amorphous cells on calculators probably cost about 2 cents. The kind of cell on an inexpensive garden light probably costs \$1. More powerful cells can be found on eBay, or places like the site below. The cheapest grade of multijunction cell from Spectrolab is about \$250 each.Brian Said:how much does a solar cell cost in Indian currency???We Answered:First thing you need to do is find the solar cell you want to buy...

## Solar Cell Homes

Rebecca Said:How to create your own solar cell at home ?We Answered:It is cheap and easy to make a solar cell at home. However the power you will get is so tiny you can hardly measure it. You can't compete with industrial made solar cells. The energy used to make this cell you will *never* recoup. Its a net energy loss with this one so you aren't going to save the planet:Brandon Said:how to build solar cell at home?We Answered:you can't reasonably build a photovoltaic cell on your own. you could build a solar thermal collector which would heat water...

## Solar Cell Installers

Rebecca Said:physics; solar cell question. help?We Answered:Yikes, too many questions, sorry. The best way is to make a start on these problems, then ask people for help where you get stuck. For the first one, look up Ohm's law in your book or online. The resistance R, is 10 ohms, and the voltage E, is 0.36. Plug that into Ohm's law, and solve for the current, I, in amperes.Karl Said:desperate plz help.................short?We Answered:Most conventional solar cells use visible and infrared light to generate electricity. The article below should explain all you need to know about solar cells. This...

## Solar Cell Photovoltaic

Maxine Said:Solar Cell/Photovoltaic Cell application?We Answered:Yes you can. You'll have to use your tester in the sun. Small solar panels can be purchased from any electronic component supplier....

## Solar Cell Work

Bobbie Said:Anyone know how does the solar cell work.?We Answered:A solar cell or photovoltaic cell is a device that converts light energy into electrical energy. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight, while the term photovoltaic cell is used when the light source is unspecified. Fundamentally, the device needs to fulfill only two functions: photogeneration of charge carriers (electrons and holes) in a light-absorbing material, and separation of the charge carriers to a conductive contact that will transmit the electricity (simply put, carrying electrons off through a metal contact into a...

## Solar Cells And Solar Panels

Marlene Said:solar panels & solar cells?We Answered:solar cells convert sunlight into electricity solar panels are giant panels containing thousands of solar cellsGail Said:How fast do solar cells convert light into electricity?We Answered:at the speed of lightPatsy Said:Can the solar cells in solar panels be made into any shape or do they have to be flat?We Answered:The 2010 Prius will have a solar panel roof option. This panel is slightly curved to fit the form of the roof. There are also flexible PV panels Typically panels are flat as they are directed at the sun (with a tracker) to maximize voltage generation. ...

## Solar Cells Cost

Gabriel Said:How much does it cost to install solar cells in a typical American house, and when will it be paid back?We Answered:Yhis is a very complicated question. I won't be able to answer it, but will give you some things to think about. First of all, I have a solar system. I installed it because I had enough money, and it was higher on my priority list than anything else. My first goal was to do it in the name of reducing my impact on the energy and ecology situations. The second goal was to provide enough power...

## Solar Cells For Sale

Ernest Said:What are some of your ideas to pull America out of its Economic crisis?We Answered:This is the ONLY time I wish I could have a "LIKE" button to like all 15 of those proposals. Can't agree any more my friend. A few things I would add though are: - Introduce some sort of pay scale for high-paying jobs and do something about these bonuses for bank managers and such. - Have most, if not all, major sports franchises and leagues widely owned, and introduce a new CBA for each league which doesn't allow for outrageous pays. - Switch from unit banking system to...

## Solar Cells Home

Barry Said:solar cells?We Answered:Check out www.sunwize.com . They have hundreds of dealers that will install all over the USA. They have a very large warehouse in CA and NY and their prices are the same as everyone elses. I know this because I have a dealership with them. You can send me an email if you like and I will be happy to give you more information. Or even price you a system but you would have to hire a local contractor to install it.Marilyn Said:Where are the solar cells are avilable ? What are cost ? Can I make...

## Solar Cells Information

Teresa Said:Does anyone have any information about Solar Trackers?We Answered:A large amount of information is available on line from companies that sell solar panels and solar trackers. Just do an internet search on "solar tracker." You can study the design and construction of solar trackers and if you are at all mechanically inclined you could build one yourself. I use solar panels, batteries and an inverter to power my passive solar house. I tried trackers for a while, but discovered that the mechanical problems with trackers were more bothersome and costly than mounting the solar panels in a stationary array and adding...

## Solar Cells Photovoltaic Cells

Ian Said:solar cells (photovoltaic cells)...?We Answered:solar cells are used everywhere. i'm not sure if that is what you mean or solar plants which are different. only places in the united states with a reliable source of sunlight will there be a solar plant. everywhere there are little solar powered things like flashlights, toys, etc. basically everywhere solar CELLS are in use but not solar plants. solor plants require a lot of land and money in order to build. i hope that answers your question....

## Solar Cells Photovoltaic

Dustin Said:How many Photovoltaic (solar cells) we need to produce 3.7 volt electricity?We Answered:If this is a physics question, what you need to do is look at the spec sheet of your solar cell, take the Voc (Open Circuit Voltage), and derate for temperature if necessary. You can get almost 0.7 volt out of each solar cell, but will not be able to extract meaningful power at the voltage. If this is an engineering question, then for silicon cells, count on 0.4 volt per cell. That means 9 or 10 cells, under bright sun. As the others have...

## Solar Cells Solar Panels

Francisco Said:How can we increase the efficiency of solar cells?We Answered:Every solar cell has a maximum theoretical efficiency. It is a property of that cell, and no matter the conditions it cannot be any higher. The most efficient one, to date, is ~35%. Factoring in material and system limitations, the maximum efficiency we have attained is ~30%. Unless we find a new combination of materials for a solar cell, efficiency will remain low.Tracy Said:Whats the difference between Batteries and Solar Cells (Solar Panels)?We Answered:The first answer is correct, though you can run a home or device during daylight hours directly (basically)...

## Solar Cells Work

Audrey Said:How do solar cells work?We Answered:Detailed Version: A solar cell is composed of a semiconductor with n-type and p-type material, that has a built-in potential at the junction. When light photons hit the semiconductor, they are absorbed and convert the photons energy into an electron and hole pair. These carriers are split by the built-in electric field of the junction in the semiconductor which outputs a current and voltage that can be used for energy. Less complicated version: light hits a solar cell and the light is converted into a voltage and current similar...

## Solar Electric Cell

Lawrence Said:Why can't they make electric powered vehicles with a solar cell body that charges itself?We Answered:There's a book called "Solo: Life with an electric car" by Noel Perrin. In the 1980s he buys a Datsun with solar panels on the roof. It only covers about 10% of the car's needs though. He went 100% solar by putting more panels on the roof of his house. He sold power to the grid then bought it back to charge his car! Technology moves on, and they now have solar racers that can cruise at 60 mph on...

## Solar Electric Cells

Charlotte Said:Why isn't there an electric car available with solar cells on the roof/trunk?We Answered:Becuase it would end the oil businessMaxine Said:Why can't we embed Solar Cells on cars and use them to help recharge Batteries on electric cars?We Answered:You can. Solar powered trickle chargers for a lead acid battery can be found at any spare parts dealer. A lot of 4x4 drivers use them to keep batteries charged while parked up and to be able to use car fridges without having to run their motor to keep up charge.All so there is a race ? across Australia Nth...

## Solar Electric Panels

Catherine Said:Who is stopping the production of solar panels, electric cars, power windmills, nuclear power ect.?We Answered:Watch the movie Who Killed the Electric Car. It explains how consumers, big business, and the governemt are reluctant to allow such technology to be massively empolyed.Lillie Said:How difficult is it to make solar panels to generate electric for my home?We Answered:It is not to hard to make it. You will have to buy solar panels and connect them with your house... if you are good with tools you may be able to do it on your own so the only cost would be...

## Solar Electric Photovoltaic

Max Said:bulk solar cell suppliers?We Answered:It depends upon the application. Is this for a residence or for a larger project? If it's for a residence, then look at Northern Tool. They have great deals for home-owners, but this is not a bulk supplier. They would have enough for a decent array of PV panels. If it's for a larger project, like a warehouse, factory, and/or industrial/commercial project, you'll need to contact a vendor. You can find all sorts of vendors here: http://en.wikipedia.org/wiki/List_of_pho… However, it should be noted that PV's are terribly inefficient. If at all...

## Solar Electric Power

Raul Said:how do i convert anything electric into solar power?We Answered:You need to spend about \$600 to \$800 just to power the laptop. You also need to get the best advice on selecting the most suitable set-up to match your location and needs. Ignore the above and you will find yourself having a time consuming, expense-wasting and frustrating experience. The simple idea of having a solar panel power your electrical equipment is not easily implemented, unless the required power can be limited to around 100 watts. Understand the difference between a panel which only maintains charge on a battery, and one which is capable...

## Solar Electric System

Willard Said:I am a technician. How do I install a set of solar electric system?We Answered:Solar Electric Power Systems (PV) Solar electric power systems transform sunlight into electricity. Sunlight is an abundant resource. Every minute the sun bathes the Earth in as much energy as the world consumes in an entire year. Solar cells employ special materials called semiconductors that create electricity when exposed to light. Solar electric systems are quiet and easy to use, and they require no fuel other than sunlight. Because they contain no moving parts, they are durable, reliable, and easy to maintain. How It Works Solar...

## Solar Electric Systems

Carla Said:I am looking for a solar system to run the electric power in my small two bed bungalow?We Answered:Try the Milky Way!.Tammy Said:Solar electric system help, please? DIY?We Answered:Very general answer. What you plan is difficult if you want to make it perfect. If you want to make it quick and dirty for fun, it could be a neat project. A CPU fan is a great little thing to power because it is very well balanced and takes little energy. Try to get some data on the fan. I am just guessing, but it is bound to be much...

## Solar Electrical Panels

Anita Said:My electrical usage is about 312kw/month.How many solar panels would I need to generate that myself?We Answered:Er, my figures are quite a bit different to that. Okay, you use around 10kw/h per day. That's pretty good, as most households use over 15kWh. Well done there. I'm going to assume you're in an average area (as far as solar irradiation is concerned, so get an average of four solar hours per day. To generate 10kw/h you'd therefore need a 2.5kw solar system (4 hours x 2.5kw = 10kw/hs) So assuming you're buying an 'average' solar panel of about 175 watts, you'd need about 14...

## Solar Electricity Energy

Tracy Said:is there an alternative for solar panels that can collect and convert solar energy into electricity?We Answered:Besides the silicon type, there are a couple of types: 1. the reflector type of solar power, which uses a mirrored dish to focus sunlight to boil water to drive a generator. 2. using sunlight to heat a thermocouple which drives a current. Both of these are larger than your typical solar cell and are not really that efficient - yet. A solar cell is the only thing that converts photonic energy into electricity, although they can be made of silicon and other materials.Constance Said:Is there an...

## Solar Electricity For Homes

Brett Said:Please help with a project Solar wind and electricity!?We Answered:1) You have to figure it out. If it's in Hawaii, you probably don't need heat, and can get by without A/C, too. In other places, more would be typical. 2) Your choice! 3) Since utilities are allowed, just to be minimized, I'd go with grid-tied solar electricity. The panels can generate 100% of average usage over time (unless this is Alaska or something). The grid is assumed to be reliable, but if there are doubts, I would go with a gas-powered generator for emergencies before I went...

## Solar Electricity Home

Leslie Said:How much electricity can i generate using solar panels or other renewable energy sources for my home?We Answered:Check the solar panel ratings.Jacqueline Said:who already used solar panel for supply home electricity?We Answered:Hey Lee, there are literally thousands of people and places using solar energy. In the United States alone, over 100,000 homes and businesses produce and use some level of solar power for their electric loads, and the number increases each day. Our home has been powered by the wind and sun for 11 years now. We are still connected to he electric grid, but our average electric...

## Solar Electricity Homes

Bernard Said:Where can I find information on switching to solar-electricity at home?We Answered:Here ya go, If this doesn't get it e-mail me with what specifically you are interested in.Gabriel Said:Has anyone ever thought has convert their home to solar electricity?We Answered:Solar requires a big upfront investment. Factoring in the time-value of money, you'd be lucky to ever break even. It's a losing proposition. That said, there was a prototype solar electric car charging station built for TXDOT near Midland (if I recall correctly) that was being decommisioned, so the solar panels might be available for next to...

## Solar Electricity Panel

Jessie Said:How can I build my own solar panel for electricity?We Answered:Unless you have a silicon fab in your basement to make silicon wafers, you aren't making your own solar panels and there is nothing about this idea at all that will be "cheap". Your entire idea may be nobel on one level, but it also points out just how uninformed on the subject you are. As an example of what I mean, buying the solar panels is not actually a problem, but it is apparently the only part of the problem you can get your head around, so this is...

## Solar Electricity Panels

Sean Said:Is it possible to make solar panels for generating electricity out of everyday materials?We Answered:Not unless you can figure out a way to produce a semi-conductor at home. Basically a solar cell (photovoltaic cell) is a couple of layers of silicon P type and N type. Electrons become excited when light quanta penetrates into the P layer. The excited electrons move to the N type and (very oversimplified) create electricity. I doubt you would have the facilities to create the materials at home.Keith Said:Normal electricity vs electricity using solar panels?We Answered:You need to consider the energy required...

## Solar Electricity System

Troy Said:why don't they use solar system to bring water and electricity for the Farms in Egypt?We Answered:the system cannot afford supplying such innovationsChristina Said:How do I generate electricity using weaked dry cell batteries, table salt, water and the solar system.?We Answered:Having trouble understanding your question. "weaked"? Is it wrecked (broken) cells or weak cells? If you have the entire solar system, you can do anything. I think you mean a solar cell? "water should not dry" doesn't make any sense. If you have weak batteries and a solar cell, you can charge the battery from the solar cell....

## Solar Electricity Systems

Joyce Said:How much would it cost, and how much land would be need to get all the electricity in the US from Solar Power?We Answered:15Watt 38in x 13in = 494sqIn Scale this up by a factor of 1 million 15Mega Watt = 494,000,000 sqin 494 000 000 square inch = 78.75 acre Sofar 15Mega Watts from 1,000,000 panels needs 78.75 acres lets scale this up to equal SqMiles (640 acres = 1 sqMile) Note the area doesn't consider additional room between the panels. You will need additional space so you can walk...

## Solar Energy And Solar Cells

Cynthia Said:Catchy title for science fair project about solar energy/solar cell?We Answered:The "Bright" Solution (towards saving energy)Pamela Said:what is the difference between generating energy using solar cells and solar thermal energy?We Answered:Solar photo-voltaic is the absorption of a photon by a semiconductor which causes an electron to be emitted. The frequency of the photon that can be absorped is determined by the orbit of the outer electrons in the semiconductor hence most solar cells only absorb light energy in the infrared spectrum. Various newer solar cells are formulated with different materials to absorb more than one...

## Solar Energy Cells

Bruce Said:How/where can you get data with solar cells(solar energy) ?We Answered:"with...?" Do you mean where to find data *about* solar cells? Here's an excellent article about solar cells: http://en.wikipedia.org/wiki/Solar_cells If you mean technical data, as in a manufacturer's data sheet, here's a fairly typical one: http://www.jameco.com/Jameco/Products/Pr… If you truly mean "how do you transfer data from one location to another using photocells", I'm not aware of any reliable way to do this. Photocells would make a poor choice for data transfer. I do not think they would react fast enough to keep up with a realistic data stream.Timothy Said:With solar energy...

## Solar Energy Companies

Sarah Said:Do you think investing in solar energy companies at this time would be wise?We Answered:I think it would be. Alternative energy is becoming very popular these days. Furthermore, the "Green Collar" economy is getting off the ground, so people of all economic backgrounds could potentially benefit from it, and not just the wealthy. Most western countries are ahead of the USA in alternative energy, so it's only a matter of time before we catch up. Furthermore, technology like that would be incredibly helpful in places like sub-Saharan Africa where there is a lot of sun. With...

## Solar Energy Electricity

Ken Said:How solar energy produced electricity and how it is beneficial?We Answered:1.The solar energy is produced by a solar cells. 2.The solar cell is a cell which is having a p-n junction. 3.So, when the solar energy is fall on the cell,a package of photons will penetrate in the p-n junction. 4.the photon is nothing but apair of electron&hole. 5.Due to that penetration the conductivity takes place at the junction.And the electricity is produced due to the solar energy. BENIFITS: 1.Here the source is a sun light.It isn a free of cost to everybody.So,everybody can use this at alow cost. 2.No,use of controllers to control the source. 3.It...

## Solar Energy Equipment

Stanley Said:which country is leading in invention of Solar energy equipments and developments?We Answered:Denmark is leading country in Solar Energy. The latest Revolution in Solar Energy is copper indium gallium di-selenide (CIGS) its so good it comes in rolls (not panels) so you can just roll it on your roof. and link it up. they try to hype up 'Panels' because the industry makes more money from them. And the roll-on panels are by FAR cheaper. http://bit.ly/dlm1bTMax Said:Are solar energy equipments commonly used in Las Vegas? Is it really cheaper than gas?We Answered:Solar Energy used to be prohibitively expensive, with only the well...

## Solar Energy Facts

Rick Said:what are some facts about solar ENERGY?We Answered:- better for the environment than traditional forms of energy - has many uses such as electricity production and heating of water through photovoltaic cells and directly for drying clothes - can also be used to heat swimming pools, power cars, for attic fans, calculators and other small appliances. It produces lighting for indoors or outdoors - can even cook food with it - demand for Solar Energy is currently greater than supply - is measured in kilowatt-hour. 1 kilowatt = 1000 watts For more of this go to: http://www.facts-about-solar-energy.com/… and http://www.alternate-energy-sources.com/…Raul Said:solar energy facts and info?We Answered:Well technically the first...

## Solar Energy For Homes

Tracy Said:2. What are the pros and cons, of using solar energy for our homes?We Answered:I would address your question by saying that yes, I would certainly install it if I owned a home that I intended to stay in for at least 10 years. I think it takes a while before you make the money back on the installation investment. I wish I had it... maybe my next house! Solar Energy Advantages Saves you money After the initial investment has been recovered, the energy from the sun is practically FREE. The recovery/ payback period for this investment can be...

## Solar Energy Home

Annie Said:How to use solar energy for home?We Answered:to heat water for heat and to produce electricty i have 200 solar panels. the water is a very saline solution as to hold heat in a heat exchanger the sun reflects back off a parabolic panel heating the solution. and the system tracks the sun all day and auto resets for morning sunWilma Said:Converting to Solar Panels- If I wanted to convert my home to solar energy, what would the cost be?We Answered:A lot of it depends on where you live. how large is your house. how many sunny days you...

## Solar Energy Houses

Allen Said:Are there any grants for converting homes and or swimming pools to solar energy?We Answered:You can go to the Catalog of Federal Domestic Assistance (CFDA) http://www.cfda.gov and Grants.gov http://www.grants.gov - these are two sites created by the federal government to provide transparency and information on grants. Browse through the listings and see if you can find any grant that would support a for-profit venture. Even if you buy books on "how to get grants" or list that supposedly has information on grants -- all of them are mere rehash of what CFDA has, albeit packaged differently. But still the info...

## Solar Energy Information

Wallace Said:What is a reliable website where I can find detailed information on solar energy or science in general?We Answered:Energy Science Projects and Activities Here you'll find resources for science projects and activities-for science fairs, class or home-to help students in grades K-12 learn about energy, particularly energy efficiency and renewable energy. http://www1.eere.energy.gov/education/sc…Richard Said:Where do I find information on building solar energy devices?We Answered:There are plenty of solar water heaters already on the market. Plus you can buy all the parts to make your own. No need to reinvent the wheel..Terrence Said:What's a good resource for information about solar energy...

## Solar Energy Installation

Samuel Said:I want to become energy independent. Can anyone help me with Solar energy installation know how for my home?We Answered:Try joining http://www.justfortheloveofit.org It's a freeconomy site, the idea is that people use their skills to help out people they don't know for free. (and make new friends) I know that in my area there are some people with amazing skills including solar energy installers. Join and see if there is anyone who can help you. If there isn't an installer there is bound to be someone with knowledge to help you further. Sorry to send you some where else and not give...

## Solar Energy Panels

Jon Said:How efficiently do plants use solar energy when compared to solar panels?We Answered:Most plants are around 1% efficient at turning sunlight into a useful form of energy it can use. Bamboo is probably somewhat higher. Solar panels are somewhere around 20% efficient now I think. Trees are much cheaper to use for collecting solar energy if you have the land area though.Freddie Said:Why isn't there a requirement that buildings install solar energy panels?We Answered:Yes, you have answered your own question, for the most part. The main reason is price....

## Solar Energy Photovoltaic Cells

Arnold Said:Which of the following does not involve solar energy?We Answered:geothermal, thermal energy from the mantle.Tommy Said:How is energy from the sun used?We Answered:The sun makes the wind blow (warm air rises and the wind is air filling the gap left) so sun power drives windmills, wind turbines and sailing ships. The sun makes the rain (seawater evaporates and is carried inland by the wind) so water wheels and hydro-electric stations are sun powered. The wind makes the waves on the sea, so wave powered generators are sun powered. But tides are driven by the moon so tidal barrage generators are moon powered. Cheers,...

## Solar Energy Photovoltaic

Derrick Said:Isn't it true that the photovoltaic conversion of solar energy to electricity also has the advantage of . . .?We Answered:Yes and this is why we need to build solar power stations in 24 hour orbit around the world. These stations can be built from materials found on the moon and in orbit and need not be lifted from earth. By this means only ready to use electricity will be beamed down to receptor stations on earth for commercial or residential consumption. This will place the majority of earths commercial energy system in orbit where it does not...

## Solar Energy Photovoltaics

Agnes Said:What is photovoltaics? How it is related to solar energy?We Answered:Photovoltaics is best known as a method for generating solar power by using solar cells packaged in photovoltaic modules, often electrically connected in multiples as solar photovoltaic arrays to convert energy from the sun into electricity. To explain the photovoltaic solar panel more simply, photons from sunlight knock electrons into a higher state of energy, creating electricity. Photovoltaics can refer to the field of study relating to this technology, and the term photovoltaic denotes the unbiased operating mode of a photodiode in which current through the device is entirely due...

## Solar Energy Power

Melissa Said:What majors to pursue for energy/solar power job?We Answered:Many universities offer solar engineering classes for mechanical engineers. The design of hot water and wind power systems deal with the sciences that they have studied. Photovoltaic systems lean more towards the electrical engineering side of engineering.Larry Said:How can we bring solar power energy to our streets?We Answered:Until compact onsite electrical storage becomes practical, it's better to have centralized solar power stations feeding power to the electrical grid, because 1) the wiring to the lamps are already in place and/or are necessary anyway for times of no sun, and 2) greater efficiencies...

## Solar Energy Products

Gail Said:Will the solar pannel charge in the winter in upstate NY?We Answered:Unless the total charge is small then it is not likely. Most solar cells and batteries built today for small appliances only work real good in hot sun. Home units are much more expensive and so are more sensitive. I live 1200 miles South in Kentucky and i cannot charge AA batteries in the sun in October for my camera. Also where I live unless you have a private cemetery on your property, most close at dark anyway to avoid vandalism.Julie Said:I would like to know how to find capital to finance...

## Solar Energy Pros And Cons

Lydia Said:What are the pros and cons of solar energy?We Answered:There are two basic kinds of devices currently in commercial use to capture solar energy. One device captures solar energy as heat. The most common device is designed to heat water. The other device converts solar energy to electricity. That device is known as a solar photovoltaic cell. The device that heats water is very inexpensive, produces no greenouse gases, and has a very low capital cost. The solar photovoltaic system has the advantage that it produces electricity, and produces no greenhouse gases.. The disadvantages are very high capital costs, and substantial maintenance costs. Over...

## Solar Energy Pv

Vincent Said:solar energy?We Answered:There is some debate about this question. Photovoltaics have a long way to go (although they are improving). Check out these links to someone proposing using a Stirling engine. Maybe that's what you mean by solar thermal....

## Solar Energy Solar Energy

Nicole Said:Solar Energy?We Answered:Depends where you live, if your annual sunshine hours are high then you will save more than if you live at a latitude with less sunshine hours. Solar energy will not provide enough energy for a school, you would need a combination of both regular energy delivery to back up the solar power. I would use certified people, and for legal purposes it would most likely be required on school property. I hope your school decides to go for it because the long term benefits to the planet really do outweigh the big start up cost!Carrie Said:What...

## Solar Energy Solar Panels

Nicole Said:Alternative Energy solar panels windmills and nuclear energy?We Answered:There are many sites with information about alternative energy sources. Try some of the links listed as starting points....

## Solar Energy Solar Power

Jamie Said:Are solar energy and solar power the same thing?We Answered:solar energy: energy from the sun that is converted into thermal or electrical energy solar power: energy from the sun that is converted into thermal or electrical energy So yes, both solar energy and solar power is the same in definition.Katrina Said:how is solar power energy measured?We Answered:First, kilowatts measure power, which is unit energy per unit time (kilojoules/second in this case). Kilowatt hours are a measurement of energy. Your panel produces 1000 joules per second, which equates to 24 kilowatt*hours per day, maximum. Therefore, your energy consumption for your household at any...

## Solar Energy Solutions

Bruce Said:How can we combine geothermal and solar to provide a total energy solution for a home?We Answered:You'd set it up in much the same way that you'd set up a grid connected home, just that you'd have an inverter powering the set-up. If you want to run on solar power you'll need some kind of backup for night, batteries work OK for small scales although you'll need to replace them every so often (especially if you act like you're still on a grid) although having a grid connection might not be such a bad idea to just run off the...

## Solar Energy System

Karl Said:How much money is needed to build SOLAR ENERGY SYSTEM?We Answered:It depends. A small one is \$10 and one to keep a big house supplied with power can be more than \$50000Priscilla Said:how much does it cost to buy a solar energy system for my roof?We Answered:Depends on a lot of different things, among other things how big of a space you want to power. The maintenance isn't much as there really isn't much to maintain with solar energy. The panels, inverters, batteries, etc come with warranties and the initial cost of the entire system can be reduced greatly...

## Solar Energy Systems

Fernando Said:does anyone know how i can measure the effects of active and passive solar energy systems??We Answered:what effect?Duane Said:which company provides solar energy systems in California with solar panel installation?We Answered:You can see a list of NABCEP (North American Board of Certified Energy Practitioners) certified installers at http://www.nabcep.org/. Using a NABCEP certified installer insures that the installer has had the proper training and experience.Arnold Said:where I can find the information of solar energy systems & technologies?We Answered:Here are an couple of links. Hope that helps. Good Luck.Neil Said:where should solar energy, wind power, and geothermal energy systems be located on...

## Solar Energy Technology

Audrey Said:Has the world wars among others prevented the advancement of solar energy technologies?We Answered:Though I'm just passing through and am merely going to comment, the World Wars actually helped speed up and expand technological innovation. I mean the reason why Einstein and many other scientists were busily trying to build a nuclear bomb was because they wanted to get it done before the Germans did. Advancements in aircraft, sensors and everything similar was to put one group above another group.Steve Said:Solar Energy: current technology and research?We Answered:well the most significant advancement in solat tech is over at nanosolar.com who...

## Solar Energy Uk

Rene Said:has anyone living in uk got a grant for converting to solar energy?We Answered:B & Q are advertising that one is available. We got a Grant for installing a Sinkerator (waste disposer in sink). Had solar panels put on the roof a month or so ago and not used any power for heating water since - even with the overcast skies and rain, the water is way up to temperature before we shower in the morning. I think the system is called "SMART energy" if anyone is interested. Got to spend the kids inheritance somehow!Florence Said:What grants are...

## Solar Energy Work

Joshua Said:How does solar energy work? Like how do solar panels make electricity and heat?We Answered:solar energy uses free electrons. they work better in lower heat. the electricity that comes out of them is low voltage dc that is then transformed into high voltage ac.Agnes Said:How does solar energy work?We Answered:There's a really good explanation on how solar energy works at http://www.sunup-solar-power.com Click on the left menu bar "How Solar Works". This site explains things in layman's terms and has lots of good information.Hilda Said:How do solar energy panels work?We Answered:Solar electric panels (photovoltaic panels) use the light...

## Solar Home Power

Ricky Said:Is there subsidy if solar power is installed at home for electric use?We Answered:According to this article http://www.businessgreen.com/business-gr… not yet, but perhaps soon. See also the link in the article for India's "National Solar Mission." If your electricity is expensive, it may still be worth it to do a grid-tied solar install....

## Solar Panel Arrays

Vivian Said:how big does a solar panel array have to be to supply power to the US?We Answered:The entire US? Wow, well you need to identify the total power amount (amps) and the capacity of each solar cell per panel (solar panels vary is size depending on solar cell output capacity), and the energy storage unit capacity. With todays technology, you are probably looking at a solar cell panel complex that could only be deployed in space to get maximum constant performance micro beamed back to earth energy receptor units; the panel size required would be hundreds of square miles...

## Solar Panel Companies

Ronald Said:Should i invest in a solar panel company?We Answered:Investing in individual stocks is a risky business. You would probably do better with a mutual fund that is more diversified. If you want to invest specifically in the solar sector, look at a fund with the symbol TAN. I could list names of solar companies, but really, would you make investing decisions based on what a stranger on the internet said on Yahoo Answers?Glenn Said:can you direct me to a website that has a lot of information about solar panel manufacturing companies?We Answered:Well, you can search on Alibaba.com for...

## Solar Panel Cost

Theresa Said:How much does a solar panel cost for 1house of average energy consumption?We Answered:I was quoted a price of \$36,000-\$50,000 to provide all the power I use minus my air conditioner with PV panels. Since my yearly electrical bill does not exceed \$1000 it will not pay back in any reasonable amount of time. Windmills are cheaper but take more work and approval/clearance from government and home owners assocications. Things to consider about wind power: 1- it needs to be on a high tower (at least 30 feet above your roof but even higher is better). Trees, houses, hills etc. all steal...

## Solar Panel Efficiency

Darryl Said:Solar Panel Efficiency?We Answered:I've operated a 25 kilowatt (kw) solar panel system for two years (144 panels, rated at 190 watts each, just about like yours). It averages 110 kilowatt hours (kwh) per day, but clear days get about 160 kwh. My system generates about 3300 kwh per month (we dump directly to grid), worth about \$4,000 per year. Payback for my system, which cost \$100,000 (after utility rebates and tax credits), is 25 years (the expected lifetime, coincidentally). Under similar conditions, your 200 watt solar panel would average 820 watt-hours per day, or about...

## Solar Panel Electricity

Jennie Said:How much do solar panel roofs save on your electricity bill?We Answered:The savings would depend on a variety of factors. If you live in the Southwestern U.S. you can actually MAKE money by selling surplus power back to the power company, i.e.: your meter will run backwards. The initial cost is what often stops most people from installing them, it can be upwards of \$10,000 or more. For most other areas you'll probably break even with the power company. They're great on hot sunny days in that you can keep your house very cool during the day and it...

## Solar Panel Home

Jamie Said:How can i build a solar panel in the home?We Answered:You don't BUILD a solar panel... that would not be cost effective. Do a GOOGLE SEARCH on SOLAR PANELS... that will give you company names and then you can contact them for information about living on 12 volts... you DO understand batteries, invertors and charging systems, I assume.. because that is critical knowledge for installing a solar panel system in a home that will actually WORK.Zachary Said:Thinking green and was curious bout making a home made solar panel? can you help?We Answered:http://www.yourgreendream.com/diy_instru…Cynthia Said:Can someone give me a ball...

## Solar Panel Information

Marc Said:Where can I find information on how to build my own solar cell an panel?We Answered:http://www.scitoys.com/scitoys/scitoys/e… Here is a site that uses household type apparatus. simple and says it delivers some current. http://www.solideas.com/solrcell/english… here is another without household items but you can order the kit on here.Carla Said:Where can I find information and parts for a small solar panel project to run air conditioning for my garage?We Answered:Try some of these sites http://www.howstuffworks.com/ to learn about solar http://www.harborfreight.com/ Harbor freight has the least expensive solar panels I've seen and there is one in your areaDawn Said:How can i use a solar panel...

## Solar Panel Installation

Marian Said:How do I start my own solar panel installation business??We Answered:Yes. Doing an electrical engineering agree is essential is you want to understand, design and build the SP systems. If your goal is just to start the business, handling only the business aspects of it, and getting engineers to design the systems and electricians to install it then it is OK to be without the technical knowledge (although it will always help you). Installing the systems would probably require a wire-mans license (not sure if that is also the term used in the US) which means that it will need to...

## Solar Panel Installers

Charles Said:can anyone give me the details of a reliable non-extortionate solar panel installer based in north wales?We Answered:Smart Energy UK, Unit 4, Deva Business Park, Welsh Road, Deeside, Clwyd CH5 2HR http://www.smartenergyuk.com/Gail Said:How do I become a solar panel installer?We Answered:The SEI group specializes in training folks on installation of solar systems They have courses available in different cities they also have an online class. I would not suggest the online course (I took it) I think real classroom time is much better. If you cannot make a class I would suggest getting their training book. It has...

## Solar Panel Kits

Frances Said:if i buy 2 solar panel kits of 45 watts each how much would i making in kwh?We Answered:Others above have covered the calculations quite well. For a real world data point, each 1000 watts of solar array in my area of northern California produces about 2000 kWh of energy per *year*. Those little 45-watt kits from Harbor Freight, Northern Tool, etc., can be fun, but they have amorphous silicon panels, and from what I've heard, are very optimistically rated. One guy who analyzed the kit said that the panels actually returned more like 5 watts each in bright sun,...

## Solar Panel Manufacturers

Joshua Said:Information please.We live in Zimbabwe. We are able to assemble solar panels for resale for household use?We Answered:Please visit http://www.affinisexports.com We sell high-tec solar water heating systems at really compatable pricesDuane Said:What are the largest manufacturers of solar panels in the US?We Answered:FSLR, SPWRA, ESLR are a few. But bear in mind that foreign-based companies such as STP are considering setting up plants, here.Emily Said:Why don't solar power panel manufacturers use their own solar panels to power their factories?We Answered:Honestly, it is because solar panels alone are too unreliable (cloudy days, etc.) and WAY too expensive to use and maintain. It...

## Solar Panel Photovoltaic

Dustin Said:What is the difference between Photovoltaic Electricity and Solar Panels?We Answered:Photvoltaic makes electricity. Solar panels makes hot water.Cathy Said:What capacitor should i use to store energy from a solar panel?We Answered:There are two things to consider with capacitors: 1) The voltage rating 2) The capacitance The voltage rating tells you the maximum voltage that can be applied across the capacitor. If you exceed this, you'll destroy the capacitor. For storing energy from a solar cell, you just need to check the voltage output by the solar cell under sunlight (using a voltmeter, or by checking the spec sheet for the cell if you...

## Solar Panel Price

Patsy Said:What is the price range for a solar panel (installed) sufficient to power an average refridgerator?We Answered:I run a 5000 btu AC unit on an 810 watt off grid solar electric system. It is able to run my double door fridge with ice maker when I need it to. You need to get a kill-a-watt meter and see how much power you will need and get a system to match it if you are going to be hooked to the electric co. If you are going off grid you need a system twice the size you need with a...

## Solar Panel Prices

Ricky Said:What is the different prices between solar panels and dams?We Answered:It Really depends how big the dam is and how many solar panels. need specifications.Steve Said:Evergreen Solar Panels @ Home - At What Prices Can You Buy These Panels?We Answered:Evergreen solar panels cost between \$750 for the 170 W panel and \$892 for the 195 W panel. These are some typical prices for the Evergreen brand: * ES-170 SL (170 W / 25.3 V) ==> \$750 * ES-180 RL (180 W / 25.9 V) ==> \$820 * ES-190 RL (190 W / 26.7 V) ==> \$870 * ES-195 SL (195 W / 27.1 V)...

## Solar Panel Pv

Jessica Said:Is there any restrictions on installing pv solar panels on a comercial building roof?We Answered:Other than having a licensed electrician sign off on it (commercial buildings require this, especially for insurance) and making sure that the arrays are properly anchored, no.Roger Said:Can I rely on solar PV panels for all my home energy?We Answered:You cant rely on PV for all of your solar needs, however, you'd be surprised as to how much you can power with PV. Is there anything in particular that you'd like to power? hot water heater, oven, etc? You may have to rely on another...

## Solar Panel System

Jason Said:Is this amount big enough for solar panel system?We Answered:You need to contact a contractor and get an estimate. This link will give you a free estimate. http://www.calfinder.com/estimate/solar-… http://solarlease.solarcity.com/?utm_ter… http://www.google.com/products?q=solar+p…Ernest Said:Has anyone used a solar heating panel system with an Intex pool and filter? Do they work?We Answered:The pool store guy is right. Those intex pumps are junk. Look for a used 1Hp pump or buy one from Harbor Freight. You can unplug the Intex pump and use the new pump to push the water through the Intex filter. That is how I did mine. I have to...

## Solar Panel Systems

Herman Said:solar panel systems to become more economic and time soon?We Answered:I have heard the 20 year break even thing a few times and I don't see how you figure that. I just got a system and without the state rebates my payback would have been around 10 years. With the rebate of \$10K and only a \$2 fed tax credit I should break even between 6-7 years. If the 1st few months is any indication I may break even sooner. The federal tax credit was increased during the \$700billion bailout. Now homeowners can get a 30% federal tax credit...

## Solar Panels And Solar Energy

Samuel Said:Where can I find info on starting a solar panel/energy company?We Answered:My husband has been an installer of Solar pool heating and Solar Hot Water heaters, and other things with solar for about 5 years now, we are also looking to open our own solar company, the requirements here in florida are that you have been in the solar field for 4 years and 1 year as a supervisor, then you have to buy all the books (12 in total) and stufy them and take an Exam to actually be able to get your license, so if you want...

Marion Said:Where can I buy a portable solar panels for my home in the Philippines?We Answered:the endless world of the internet...

## Solar Panels Cells

Delores Said:What is the last planet on which we can use solar cells, solar panels??We Answered:Look at the probes sent to the planets. Probes around Mars use solar panels. Probes to Jupiter, Saturn and beyond use RTGs.Betty Said:Homemade Solar Cells - Which Solar Cell Types Are Used To Build Solar PanelsWe Answered:Solar cell types: 1. Monocrystalline solar cells 2. Polycrystalline solar cells 3. Amorphous solar cells The amorphous type is popular for homemade solar cells and small solar panels, such as in calculators and garden lamps. You get 12 Volts of electricity from a solar panel built from an array of solar cells.Claude Said:What's the difference...

## Solar Panels Cost

Jose Said:How much would solar panels cost?We Answered:The size of the house has very little to do with the amount of power used, with the exception of the heating and cooling bills. Do you have incandescent lights that you leave on all of the time, or compact fluorescent lights that are only on when needed? Do you leave your TV and computer on all the time, or only a few hours a day? Do you have energy efficient appliances, or 20 year old energy hogs? All of this makes a huge difference. You need to know how...

## Solar Panels Costs

Rosemary Said:Solar Panels?We Answered:http://www.solarhome.org/solarhomekits.h… this site can give you a lot of infomation you need. I sure would love to know where you live at to have a \$500 year electric bill. My bill averages between 137 & 150 month 3 bdrm, 2 ba. This site shows a solar tax incentives state-by-state and if one is to financie they have a tax deducttable financing. I would say it would be worth it. also there solar home kits include everything that is needed.Gwendolyn Said:how much do solar panels costs in india?We Answered:why not see the led panels ? it is more intersting...

## Solar Panels Electricity

Constance Said:Are there solar panels which can generate electricity in room light?We Answered:Solar panels absorb specific frequencies of electromagnetic radiation. Not all light is created equal. Light is usually characterized by its black body temperature. Its essentially the temperature of the source but it defines the frequencies of light. The sun is a black-body source at 6000 K Green House light bulb 5900K Florescents 4100K Halogen: 3200K Incandescents: 2600K Since solar panels are engineered for the sun, the closer you get to the sun frequencies the more power you will produce. A solar panel will generate voltage form any black body source since each source is...

## Solar Panels Energy

Steve Said:Is this the reason why solar panels are energy efficient?We Answered:The use of photovoltaic technology for producing power is environmentally friendly. Is uses naturally occurring sunlight as its source and gives off no emissions. It doesn’t pollute the air by releasing carbon dioxide, nitrogen oxide, sulfur dioxide or mercury into the atmosphere like many traditional forms of power generation. The passive energy created is both economical and abundant.Rosemary Said:What is the absolute maximum amount of energy that solar panels can get?We Answered:That depends on the solar insolation which varies around the surface of the Earth. At the top...

## Solar Panels For Home Use

Stephanie Said:Has anyone used portable solar panels for home use?We Answered:Most people think all one needs is some solar panels to make power. It doesn't usually work that way. On a boat it is easy because most boats use batteries and DC power. If all you want to do is make DC power, you will need a battery to hook your portable unit / units to. You can then use the battery to supply power to something that uses battery power. You may need a voltage converter if the device is not 12 volt. To use the power you get from solar...

## Solar Panels For Home

Elsie Said:Solar panels for home in No Cal. How much does it cost?We Answered:I'm not there, so the best answer I could give is: Look in your local newspaper and yellow pages and look for locals who specialize in this type of work. If anything like Indiana, we almost all will be glad to come inspect your home and give a free estimate. That would be your best bet on learning the answer to this question. Go Green!Stella Said:How to install solar panels at home without lots of extra wiring.?We Answered:They don't really produce enough electricity to sell to the...

## Solar Panels For Homes

Henry Said:why are politicians not solving the energy crisis with solar panels on homes.?We Answered:Because politicians can't make you put solar panels on your home if you're building one. If you want to, do it for your own home. Oh, and another thing; politicians aren't there to solve our problems for us. They're just there to run the day-to-day business of government.Howard Said:Portable Solar Panels - What's The Cost Of Solar Panels For HomesWe Answered:The cost of solar panels for homes ranges between \$100-200 based on panel wattage and electrical output. For example, a 6.5 Watt portable solar panel costs...

## Solar Panels For Sale

Herbert Said:how long will the solar power panels for sale at b and q take to pay for themselves?We Answered:There are a lot of different panels out there that range from 30 watt to 75 watt. If you put a few in a series connection, you can make them whatever you want. It all depends what you want to power and how much you have paid for the panel. They can range anywhere from 100 to 600 dollars. You will also need a control to manage the power that the panel will deliver. The power can be stored...

## Solar Panels For Your Home

Gerald Said:How do you heat your home with solar panels?We Answered:Different type of panels needed. It would require many more panels than have room for to heat with solar electric. To heat your home the collectors have some kind of fluid circulating to absorb heat. The fluid is stored in a large insulated tank so that you can have heat as you need it. I would suggest using the solar heat to supplement your conventional heat source. Never know if it will be cloudy for several days.Stacy Said:would you invest in solar panels for your home?We Answered:That's difficult to say...

## Solar Panels Generate

Everett Said:How many volts of electricity does solar panels generate?We Answered:The link below shows a fairly typical 12V panel with 36 cells of the silicon polycrystalline type. - You will see the O/C voltage is 21.6V. This is the maximum voltage with no load connected, @ 25C. There is no current. - The voltage with maximum power is 17.3V. This corresponds to the voltage with the optimum load current to get the most power from the cell. It applies at the standard illumination of 1000W/m^2. - The voltage drops further as the load is increased. If the load attempts to...

## Solar Panels Home

Julio Said:Wanting to add solar panels to my home?We Answered:Unless there has been some major breakthrough in solar panel efficiency - Forget it. I had looked at some "utility interactive" systems where the electricity generated by the solar panels went through a special inverter and into the electrical system of the house, any power you didn't use went backwards through the meter and into the grid. I figured that even if it was sunny every day, it would take about 20 years to break even on the system. That is, if I had invested \$5,000 in a small system, to save \$5,000...

## Solar Panels Information

Jennifer Said:Technical information on Solar Panels?We Answered:Very. They have a relatively high internal resistance. And it varies with the amount of sunlight.Ted Said:Where to get or find information on solar panels?We Answered:A Solar panel usually cost between \$10,000-20,000 and more. If you're not wanting to spend that much, I suggest you try the DIY solar panel guides. These are step-by-step guides in building solar panels. They are very cheap and overall, you can get solar panels for less than \$200. The guide will help you choose where to buy and what to buy so you won't spend thousands of dollars....

## Solar Panels Installers

Elmer Said:Where is the best place to get an education/experience and job in the installation of solar panels? ?We Answered:With the economy as it is, it may be difficult to find a job in this sector. There is a surplus of solar panels and companies are hurting. That doesn't mean that people aren't interested. I think it is a great time to market these products. Everyone is interested in energy conservation and reducing costs. You could consider opening your own company, but a little differently. There are many different manuals out there telling you how to...

## Solar Panels Photovoltaic Cells

Carla Said:Are photovoltaic cells the same as solar panels?We Answered:All photovoltaic cells are put in solar panels, but not all solar panels are photovoltaic cells. Solar panels that make electricity consist of lots of photovoltaic cells linked together electrically. Here's a solar photovoltaic panel: http://www.energysavingtrust.org.uk/Gene… Solar panels that heat water are not photovoltaics. Here's a solar water heater panel: http://www.energysavingtrust.org.uk/Gene…Milton Said:Photovoltaic cells are used in solar panels to ____________ ?We Answered:cSamuel Said:Similarities and Differences of photovoltaic cells and solar heating panels?We Answered:Photovoltaic cells are smaller, individual wafers, about as big as your hand, that go into photovoltaic panels. But I'll assume that the...

## Solar Panels Photovoltaic

Claire Said:Are solar photovoltaic panels expensive to purchase & install? Can I self install or is this a pro job?We Answered:It is expensive if you just look at the price and say Wow! that is a lot of money. But when you compare it to renting electricity for the next 30 years and total the cost.. Well you end up making money. You should find the package system you want which comes with instructions on how to install. Install the parts of the system you can and hire an electrician to run the wires and make the connections. You could save...

## Solar Panels Price

Felicia Said:What price range can I expect to pay to have solar panels installed?We Answered:The price range is between \$7,000.00 and \$10,000.00 Check with your utilities company. In Austin TX they pay up to 75% of the cost. Definitelly worth the shot. Good LuckHeather Said:How long do you think it will take solar panels to come down in price significantly?We Answered:Not long. The technology is steadily approaching the level where it's cost competitive with coal. There are several advancements like thin film technology which are rapidly bringing the price down. I'd say around 5 years.John Said:Price and energy...

## Solar Panels Prices

Ivan Said:How much do solar panels cost?We Answered:Solar panels typically cost in the range of 8 to 10 dollars per kilowatt of power they are capable of providing. That same kilowatt of power costs in the range of 8 to 10 cents normally. This is the reason solar is not all that viable, without government incentives. The person who responded "You're looking at \$10,000 to \$40,000..." is so far off the real answer as to not even be funny. I suspect a solar pv system for a school would start in the \$400,000 to \$500,000 range. Many areas though have incentives, which...

## Solar Panels Pv

Nathaniel Said:What is the difference between crystalline and amorphous solar pv panels from a manufacturer view point??r?We Answered:Crystalline comes in an ingot, which you must saw into wafers. Or else you must buy wafers, paying someone else to saw it. That costs more. Amorphous can be deposited as a film, cheaper to make. And as you know, it's not as efficient or durable as crystalline.Louis Said:pv (solar) panels that are installed/ran for free : will they put them up North facing do you wreckon ?We Answered:It would only make sense to put up north-facing PV panels if you...

## Solar Panels Solar Cells

Francisco Said:how many panels of solar cells i need to produce enough electricity for running a house's devises and machinesWe Answered:It depends on what you want to run. There are systems out there that will run your entire house "off the grid" with very few panels. In this situation you can have as few as one panel up to 3 or 4 to run the whole house. Then there are panels that will only run things like a small appliance or cell charger. It really depends on your needs and your budget. The bigger and more expensive the systemSonia Said:Do...

## Solar Panels Uk

Curtis Said:Why aren't all new homes in the UK built with small wind turbines and solar panels as standard?We Answered:To be fair the idea has been mooted around for several years. Solar power has been used to heat water in pensioners bungalows for awhile. The mechanics takes up a room the length of the property and it only works efficiently in the summer. By the time you calculate cost and maintenance against performance, it's little more than an expensive gimmick. If granny isn't on the roof cleaning the panels with her shammy leather then somebody else is. Wind turbines is a...

## Solar Panels Used

Rhonda Said:what is the best way to purchase used solar panels by container load?We Answered:I've got 10 used collectors on my roof. They are occasionally available from company's selling solar equipment or scrap yards. Many collectors became available when the tax rebates from the Carter era ended and the systems required more upkeep and expense than the owners were willing to provide. Mine came from a school. Most recently I came across a large group of used panel at this web site. Note that this was some time ago and I have no idea if they still have them or they were...

## Solar Panels Work

Laurie Said:Do solar panels work at an angle?We Answered:They'd work, but the output would be reduced with the cosine of the angle of incidence. If they produce, say, 1 watt in certain conditions at 90° incidence they'd produce about .7 watts at 45°, .5 watts at 60° and so on. The first guy's suggestion about placing the panels on a hat is good; they'd tend to have a more perpendicular angle of incidence in that case. You might also consider placing them on a band on the hat so they could be directed toward the sun no matter which way...

## Solar Photovoltaic Array

Mattie Said:a solution to energy crisis?We Answered:Electricity can only be transported a relatively short distance. The resistance in the power lines eventually uses up all the electricity in the form of heat. Also, the issue with energy is always cost. Solar power is five times more expensive than either coal power or Nat. Gas. Also, solar does not work at night. So, what will we do when the sun sets, sit in the dark?Florence Said:Solar conversion efficiency of trees?We Answered:I very much doubt that information exists anywhere. At least not anywhere easy to find on...

## Solar Photovoltaic Cell

Sarah Said:photovoltaic/ solar cell help?We Answered:The first link doesn't work, but that's not necessary. Timing motors are pretty rugged. The 3.9V shouldn't hurt it. In addition, the motor will run a very-low percentage of the time, and probably not under full mechanical load, so overheating should not be a problem. The alternative panel is a possibility, but you might need more than one. Its maximum power output is 3.9V at 64mA at one standard sun. However, you typically won't achieve the full output as useable energy for the following reasons: 1. Most of the time, there will...

## Solar Photovoltaic Cells

Roland Said:OK, this might sound stupid-how can a person help with solar photovoltaic cells?We Answered:You could become an engineer and design more efficient cost effective photovoltaic cells. You could sell those cells. You could install systems. You could buy one for your home. As a side note what does Governor Palen have to do with solar cells?...

## Solar Photovoltaic Companies

John Said:Where to buy solar panels?We Answered:First you have to figure out how much electricity is needed to run your house. Check your electric bills for the last year, figure out an average KWH/ day and the maximum KWH/day used in the year. Your normal solar system can only generate usable electricity for less than 8 hours a day in the summer and 5 hours a day in the winter. Varies some as you move farther north and how many cloudy days you have. Example Tucson AZ is considered an ideal climate for solar power and has 7.42 sun...

## Solar Photovoltaic Cost

Cindy Said:What solar energy projects are cost effective?We Answered:From a mico-economic (personal) perspective conservation often holds the most pay back dollars. Photovoltaic systems in the lab are now around 40% efficient with projections up to around 60%. What you can currently buy is around 14% efficient. This does not mean the same thing as a fueled system where operating costs are the primary consideration, but it does have an impact on how much of a system you will have to buy. Photovoltaics are still dependent upon subsidies and tax credits. Solar water heaters depend upon a...

## Solar Photovoltaic Courses

Naomi Said:US Graduate School?We Answered:the question is not which you can apply. it's which will admit you. definitely apply to ALL top schools you are interested. and some "safety" choices.Angela Said:renewable engineer for PR?We Answered:The definitions for each occupation are detailed on the ANZSCO list of occupations. You will need to go through the ANZSCO and find the engineering specialty that best covers the field in which you wish to specialise. If that ANZSCO code is included on the SOL, the occupation is currently eligible though there is no guarantee that it will still be eligible when you have...

## Solar Photovoltaic Efficiency

Eddie Said:solar power efficiency?We Answered:The photovoltaic efficiency should be lower than 20% for a practical system. The most expensive widely-distributed cells, Sunpower, have an efficiency of maybe 22%. Put put them under glass in a practical frame, and it's down to 19%. These are \$7 a watt type panels. The \$4 a watt panels that most folks install are 13-15% efficient, after they're put in a practical frame. The 36% type of cells from places like Spectrolab are \$250 a watt - not for homeowners. Intermittency efficiency looks good for a place like California. What...

## Solar Photovoltaic Electricity

Patrick Said:Compare and contrast the two methods that solar energy can be used for in the generation of electricity.?We Answered:I am sure that the photovoltaic panels are more efficient in converting solar energy to electricity as there isn't much loss in the process.Nellie Said:Nuclear fission goes through which of the following transformations in order to produce electricity?We Answered:it is C. because nuclear energy goes like this heat energy--> steams up water ( potential energy)--> runs turbine(kinetic energy)--> production of electricity(electric energy)Agnes Said:Do you know any company that produce solar to light up signboards at night?We Answered:You would need batteries to store...

## Solar Photovoltaic Energy Systems

Brent Said:COP for adsorption and solar photovoltaic?We Answered:I could be completely wrong here, but I though Coefficient Of Performance (COP) is only for heat pumps, as in the link below. I don't see how the photo-voltaic comes into that. Electrons in the region of the diode junction are released by the photons. It is a quantum process. I could be just dumb and ignorant, but I cannot see where specific heat comes in. Temperature, yes it has an effect on the efficiency. Up to you to prove this is a meaningful formula. The link below refers to quantum (internal) efficiency for PV...

## Solar Photovoltaic Energy

Kimberly Said:What do you think of photovoltaic and solar energy field as a field to study?We Answered:I think that energy technology will be one of the really good engineering fields for the next few decades. Concerning the narrowness of it, all areas where you get a master's degree narrow focus but increase depth of knowledge. It gets even narrower if one gets a PhD, but the depth is much greater.Pamela Said:Could we convert downtrodden malls and mini malls to photovoltaic solar energy generators?We Answered:Sure you can: First. Start your corporation! Second: Decide to either go public or operate as...

## Solar Photovoltaic India

Rhonda Said:How much does it cost in India to set up a solar grid for home usage?We Answered:The cost of solar grid station for your home depends upon the power you need. However, in Pakistan, the Jilani Park has been fitted with solar lights on its ways and grounds. The estimated cost printed on the sheet was Pak Rs.1.5 Billion. (The work was got executed through the agency of a contractor). I however, think that you house will not cost much, the cost will somewhat be within Rs One million to set up a grid station for your house....

## Solar Photovoltaic Industry

Brad Said:example of solar power supply in the furniture industry?We Answered:A quick answer is Yes.. What is your power usage in kWh's per year? What are you being charged per kWh? Do you have the roof space or a good place for a ground mount system with a clear view of the sky? What City and State do you live in? If you install before 12/31/2008 you can get a 30% tax credit on the total installed cost. That is for business only. Your state may have other incentives you can cash in on. If you like email me and we can work up a...

## Solar Photovoltaic Materials

Lillie Said:Short term loans (4-6 weeks) for materials!?We Answered:Unfortunately, if the relationship you have with your bank is not sufficient to enable them to loan you the money, you aren't going to get nearly as warm a welcome from another bank. So, banks are pretty much out of the question. For that amount of money, you *might* be able to max out credit cards... if you have enough credit cards. A "payday" loan is out of the question, as you are talking about 1500 GBP max... and they expect to be paid back quicker than a month and a half. So... it...

## Solar Photovoltaic Panel

Audrey Said:why does green light no give me a good power output for a solar panel compared to red and blue?We Answered:Silicon solar panels have their greatest sensitivity at the red end of the visible spectrum and in the near infrared. By contrast, the human eye is relatively more sensitive to the green part of the spectrum. Neither silicon nor human eyes are especially sensitive to the relatively short blue wavelengths, but your blue solution may also transmit a significant amount of red or infrared light, giving a comparatively high reading for the silicon's "blue" sensitivity.Alfredo Said:photovoltaic solar...

## Solar Photovoltaic Panels

Naomi Said:What are solar photovoltaic panels?We Answered:Photovoltaic panels (PV) captures the sun’s energy and converts it into electricity. Solar cells are made of silicon, a naturally occurring element in abundance within the earth’s crust. The silicon is processed into semi-conductors, which are called cells, and are electrically conductive in the presence of light (photovoltaic). Cells operate at a low voltage and modules are constructed with many cells connected together in series, within a protective frame. Modules are then connected in series or parallel (to give the desired voltage and current) into a solar array. The array is connected to...

## Solar Photovoltaic Power Plant

Dawn Said:can you do this for me i do not get it?We Answered:10. foodweb 11.organism 17.burning of fossil fuels This is all I knew off the top of my head.Dean Said:The Interdependence of Life?We Answered:You copied the whole test! I have this test too the same one! Get a life.Jackie Said:Solar Panels Required, Good Idea or Not?We Answered:The main drawback to solar panels is the cost. They are thousands of dollars and the amortized cost is still high. As an example. If the solar panels installed cost \$2,000. Which would not surprise me. At 3 KW per day and the electric company...

## Solar Photovoltaic Power

Valerie Said:Solar Photovoltaic and Wind Turbine can be combined for maximum power?We Answered:Well thats an interesting idea, but i consider it an unefficient design.. A wind turbine produces electricity, and so does a photovoltaic cell.. combinging them would not help.. it is as if you are installing two batteries to supply a certain machine.. you will gain more electricity but it has nothing to with combining them together.. a point i have to make that might link the two is the following: Wind turbine: works best in windy days, mostly winter time.. PV cell: works best in sunny days, mostly summer time.. in case you require an...

## Solar Photovoltaic Pv

Jack Said:Thermoelectric effect versus the photovoltaic (PV) effect?We Answered:In photovoltaic effect means, just like a diode. Already we know the principles of the pn junction diode. as same procedure is followed in this effect. but slightly varying the operation. in pn junction diode a current will flows through it.then only it conducts in forward bias. in this effect the light rays are passed to the junction of the diode. so the excess electron will produced in the p-layer or n-layer, then current will produced. the procedure is same as per the solar but little bit difference. ...

## Solar Photovoltaic Roof

Stella Said:The Vatican wants to protect the Earth - Going Solar is now Christian/I think it's great what do you think?We Answered:I think it's fantastic that more people are waking up and realizing what kind of danger our earth is in if we don't start acting more responsibly. I only hope that more large institutions, and even governments, will recognize the potential in the Pope's actions and follow suit. Nothing bad can come of trying to conserve our natural resources.Paula Said:How can this benefit the environment?We Answered:cool idea, and why not fill the desert lands with photovoltaic cells to feed...

## Solar Photovoltaic Systems

Bryan Said:Do rooftop photovoltaic systems affect birds?We Answered:well i guess they will burn them if they jump on the panels...haha just joking bro..i dunnoMary Said:Are photovoltaic systems the same thing as solar panels?We Answered:No "Solar panel" is a generic name for several types of solar collectors that may come in the modular form of panels. Adding additional panels will increase the amount of sunlight collected and the available energy. There are at least 4 general types:1 --Photovoltaic panels are used to produce electricity. These have many different sub categories.2 Solar thermal hot water panels. These have two major sub categories: --Flat panel...

## Solar Photovoltaic Technology

Lucille Said:Should we be concerned the USA only has 4 of the world's top 30 companies in wind, solar, and battery tech?We Answered:dell is naive. China is as much economically motivated as any other country. But if the US does not establish a position in these technologies, it will be repeating the mistake the US automakers made a generation ago, when they failed to invest in economy vehicles. The US also needs a sensible nuclear policy, which implies spent fuel reprocessing. Carter got this one wrong, and every succeeding President has repeated the mistake.Holly Said:Why Solar Photovoltaic Technology is not Widely Used?We...

## Solar Photovoltaic Training

Lance Said:is it possible to simulate earths gravity in outer space?We Answered:Your description is too complicated for me to understand. The real method to simulate Earth's gravity in deep space is to accelerate your spacecraft at 9.8 meters/second^2 by means of firing the rocket nozzles from the outside of the wall you want to call "the floor"....

## Solar Photovoltaics Cost

Ann Said:Why should we squander \$3 trillion on new nuclear plants, as the Republican Party proposes?We Answered:Nukemann presents what on the surface seems a non-inflammatory list of pros and cons of nuclear energy, but the enumeration, division and content of this list is misleading and in some cases factually incorrect: --Solar energy capture has the best fuel/energy cost ratio as the fuel costs nothing --Less fuel does not necessarily lead to less waste. Just as diamonds are not equal to lumps of charcoal the quality and potential disposition of the waste must be considered. An ounce of...

## Solar Power Companies

Scott Said:What are some major companies that use solar power?We Answered:lots...fedex is one their main distributors roof is coverd in panals to give 99 kw to the thing....from modern marvles on discovery chanleHarvey Said:If the Govt had not forced companies to supply power to rural areas, would we have more wind and solar homes?We Answered:That's a very interesting question. Did liberal programs back in the first half of the 20th century make it harder for us to have clean power today? I never put the two together.Rick Said:what are some good solar power companies to invest in?We Answered:BTU International (BTUI). They...

## Solar Power Components

Roland Said:I want to provide solar power and heated water to a 1500sqft home for a family of 4, what do I need?We Answered:You'll need to determine how much electricity you will ever need. Will you expect to do some heating? If you're using electric then you'll need to factor that into the size as well. Also, if you're not planning on connecting to the electric grid, then you'll need to determine how much energy you'll need for several cloudy days in a row - and size your system so that you can make that much...

## Solar Power Cost

Sam Said:Can solar power really be cost effective in the near future?We Answered:Solar energy is definitely an alternative to wasteful and harmful burning of fossil fuels. Now I will admit solar panels used to produce energy is a bit costly but in the long run it pays for itself by cutting your energy bill dowm drasticallyFrank Said:Initial Setup Cost for solar power in India?We Answered:http://www.blueviewsolar.com contact us and we will tell you to the dollar your cost.thanks tommyAngela Said:How much does it cost to produce solar power in contrast to oil or power, per watt?We Answered:Solar power costs from \$0.20...

## Solar Power Electric System

June Said:I was thinking of putting solar power system on my house.?We Answered:thats a great idea. it is pritty expencive but will pay off in the long run.Samuel Said:small solar power system?We Answered:I haven't dealt with solar for a while but i don't think it would be practical for that type of use. The a/c consumes a lot of energy and the irregular consumption wouldn't be good for the batteries which will store the electricity. Photovoltaic generation is more practical for lighting purposes since you can use energy efficient low voltage lighting which will be run on a regular basis...

## Solar Power Electricity

Jessie Said:What is your definition of SOLAR POWER and ELECTRICITY?We Answered:Solar power - may be captured by solar cells to generate electricity. May be used to heat water for thermal exchange or general heating. May be captured BY PLANTS to convert sunlight and carbon dioxide into useable biomass, plant fibers, food, etc. Electricity is anything that will push electrons around to power electrical devices. Solar-electric panels capture sunlight to generate direct electrical current. The real downside is that solar panels are not very efficient at converting sunlight to electricity. Also, they only work in the daytime and don't...

## Solar Power Energy

Agnes Said:How do you transport solar power tower energy to a building that is 4 kms away?We Answered:If you want the heat energy, consider tracking mirrors at the site and solar collectors on the houses. If you want electric energy, that area is enough to support a traditional steam turbine, much more cost-effective than photovoltaic. That area is about 15 times the area that Solar One used to generate 10 megawatts in the Mohave Desert, so it could supply a theoretical maximum of 150 megawatts during peak sunshine. That's probably enough to match the demand of about...

## Solar Power Equipment

Ivan Said:Can humans absorb and get energy from the sun like plants and solar powered equipment can?We Answered:We do absorb energy from the sun, and it is essential to the way Vitamin D works with building strong bones. It also clears up psoriasis almost immediately (well, within a day - it will come back, but then you just go out into the sun again or to a tanning booth). In addition sunshine seems to make people cheerful. However, we cannot use sunlight as a source to produce calories (the equivalent of energy in equipment).Lauren Said:Can solar powered equipment be used in...

## Solar Power Facts

Melinda Said:Is a solar panel really worth it?We Answered:solar hot water panels are SO "worth it" that the State of Hawaii has just made it Mandatory that ALL new construction must have them!! unlike photo voltaics the science behind them is easier to deal with - i have seen plans for building them at home from something as simple as an old refrigerator door. of course you can amp up the technology too. (look at back issues of Mother Earth News) to get you started on the research) so yes its worth it - yes its doable and the shed may...

## Solar Power For Home

Gabriel Said:hi any did propal about solar power for home electricitiy?i need help,thanks in advance.?We Answered:http://search.yahoo.com/search?p=solar+p…Gary Said:How much I have to spend to install a solar power for home for 5 kwp?We Answered:The installed cost of such a system should be anywhere between \$15,000 and \$50,000 - depending on the state incentives, if any, where you live. My neighbor got 4 kW installed last summer for \$12,000 net.Emma Said:where can I buy affordable home Solar power?We Answered:Something sounds wrong. It's a remote area, yet you will have mobile phones, internet connection, and TV? If it's a place that has...

## Solar Power For Homes

Herbert Said:i am searching for solar home power plant and its costing in india which is suitable to run all home equipment?We Answered:that is not a hit project i.e., it is not that useful and handy government is giving subsidiary try to collect details from government sites or search google long back i tried but found it was not handyDawn Said:Why are so little people getting solar power for their homes in Australia?We Answered:The main issue is the cost of solar panels. I think one needs to reside in your house for over 20 years before you start making...

## Solar Power For Your Home

Martin Said:Would you want a solar power plant near your home?We Answered:I would like a solar power plant FOR my home. I have no problem with such things nor would I complain about a 'wind farm'. The current coal-fired plant (about 5 miles from me) pollutes every day. It is a "clean burn" plant but the operators seem to have found a way to conceal their pollution. I can see the yellow haze being emitted in the steam plume from the cooling towers (where nothing but steam is supposed to be) on sunny days. I've told...

## Solar Power Generation

Misty Said:How is the study of radiative heat transfer associated with solar power generation?We Answered:More accurately, the sun radiates energy as electromagnetic waves, mainly at the wavelengths of visible light, which can be absorbed by a suitable panel or collector, and converted to other energy forms such as heat or electricity. There is not much heat radiation (infra red) because the sun is too hot to radiate a lot of infra red. This is associated with "black body radiation" (see the link). A black body at room temperature of 300K emits ~10,000nm wavelength radiation, whereas the sun at ~6000K is...

## Solar Power Generator

Jeffrey Said:I have a 5kw Coleman generator. The engine is no longer running. is it possible to run it using solar power ?We Answered:You could do it without violating the laws of thermodynamics, but it would not be a practical project. A new engine for your generator is not expensive, and then you could use it as a backup generator to charge your solar batteries when the weather does not cooperate. It sounds like you need some basic instruction in solar electric systems and how they work. Try an internet search on "solar electric system." Good luck.Juan Said:Solar power generator?We...

## Solar Power Grid

Ken Said:How much power is consumed by a illuminating switch light in the off position? I wired a off-grid solar cabin.?We Answered:Don't have an exact number, I'd guess at 20mA at 60 volts (half wave to drive a LED) or about 1 watt. I'd use non-lighted switches, unless you already have them installed. .Charles Said:Is it possible to just tie an apartment solar power array to the electrical grid without a battery?We Answered:Grid-tied solar system are the most common type in the USA these days. They do not require batteries. However, the inverter has to connect to the...

## Solar Power Home

Victoria Said:How to turn over home to solar power?We Answered:20,000 to 30,000 \$'s should get you started.Julia Said:Best Solar Power Home related magazines?We Answered:Actually, check out some of the links on http://www.builditsolar.com If you are going to do much of the work yourself, you will be sadly disappointed by what is available in print: Homepower magazine http://www.homepower.com for example, it most often reads like a sales brochure, because "hands on" to a number of people usually means buying most of the system ready made in a kit. Hands on for me is breaking out the soldering iron and doing point...

## Solar Power Homes

Eileen Said:How long before all homes in America have solar panels enabling us to sell power back to the providers?We Answered:that will never happen , not for everyone the cost is too great and now there is a shortage of the bigger panelsLynn Said:how do I wire solar power into my homes breaker panel?We Answered:Not to be supercillious, but the others are right, in that if you have to ask this question, you should be seeking the help of an electrician. The service panel is nothing to be trifled with. I'm taking a wild guess, but it sounds like you...

## Solar Power House

Brandon Said:I'm looking for governments grants for solar power house in Texas?We Answered:The link below is to the Database of State Incentives for Renewable Energy - http://www.dsireusa.org/index.cfm?EE=1&R… This link is specifically for Texas - http://www.dsireusa.org/library/includes… If you need further assistance, please visit - http://electricalblog.gilchrist-electric…Daniel Said:Can a house survive on solar power alone?We Answered:Absolutely yes. It's usually called "living off-grid", meaning you are not connected to the electric company's electric grid. You need to make sure you are not wasting electricity, since you have to make everything you use, so you would need an energy efficient home. Here's some solar...

## Solar Power Information

Jose Said:Looking for information on solar power for rural properties cost, how to install etc. Any ideas on websites?We Answered:Sure, there are a couple of great sources for this that I have used. For solar try http://www.builditsolar.com They have oodles of prints/plans/info and most plans are free to download. Another really cool source is http://www.otherpower.com This is mostly about wind power but you will find info on the controllers and such that are needed for solar panels too. Very unique solutions from this site! Also, you should subscribe to Mother Earth and Home Power. You can get both magazines online...

## Solar Power Installation

Mathew Said:which school in India has the biggest solar power installation?We Answered:I would recommend you to contact the department of environmental affairs India. They will provide you with a detailed and accurate answer. Good luckEdward Said:Looking for honest and correct wiring diagrams for basic solar power system for home installation.?We Answered:What is the application?? You are missing the voltage rating of the solar panels as well as the desired output voltage of the system. The batteries can be wired together in 3 configurations, to provide 12, 24, or 48 VDC. The solar panels can likewise be wired in 3...

## Solar Power Kits

Alfred Said:Looking for solar and wind power kits that are under \$12,000.?We Answered:A typical home needs about a 2000 or 3000 Watt (2 or 3 kW) solar power unit. To power your toaster , it will take 1000 Watts. To power your hair dryer, it takes maybe 1500 to 1800 Watts. A Microwave might be from 800 to 1500 Watts. If you opt for a 1000 Watt system, you may have to walk around with wet hair, and cold sandwiches. The prices for a complete 2 or 3 kW unit runs about...

## Solar Power Panel

Dennis Said:I'd like to build a solar panel to power my air conditioner?We Answered:You can find sizing calculators for solar electric off and on grid at http://howto.altestore.com/Calculators/c5/ First use the load calculator to find out how much energy in terms of wattage your AC unit consumes per day. Then you have 2 choices. You can use the off grid calculator to figure out the size of a system it would take to power your ac unit completely detached from the utility. Or you can use the on grid calculator to see what size system you would need to connect a PV...

## Solar Power Panels

Terry Said:How to connect or use Solar Power Panels?We Answered:You will need help with this. Panels may or may not be 24 volt. If you can find a name tag, you can find out from the manufacturer's web site. Some folks hook them all in parallel. Mine are in series, to create 480 volts. the reason for going to higher voltage is to reduce power loss in the wiring. Even then, I used a wire size larger than recommended. The frames want to be interconnected, and wired to ground. The live conductors connect through...

## Solar Power Photovoltaic Cells

Jean Said:solar power - any new developments?We Answered:There's only about a kilowatt of solar power hitting each square metre of the Earth's surface when the sun is at zenith (i.e. directly overhead) which is even available to harness and that power isn't reliable (things like night and clouds can cause you problems along with seasonal variations reducing the insolation). If you have 30 m^2 of roof space then the maximum theoretical power you could possibly get out of solar would be around 30 kW but only if the sun is right overhead and the sky clear (you'd need to be between...

## Solar Power Photovoltaic

Laurie Said:Does Grid Tied Solar Photovoltaic on your roof qualify as, owning your power, to power your own Home or Biz?We Answered:I don't think so.. I think you still lease the lines that attach to your home from the utility pole. But you could always detach from that.. you just need enough PV, or wind, whatever to meet your own personal demand. Maybe a backup generator for cloudy days or eclipses?Tamara Said:solar power question?We Answered:If they directly generate electricity with the solar panels, then it would be "Photovoltaic". If they are heating water, then I'd put it in the...

## Solar Power Photovoltaics

Tracey Said:Why would we build any more nuclear power plants?We Answered:1. Yes, capital costs for nuclear are high. But fuel costs are very small. Expensive to build, but cheap to run. 2. Much of the capital cost penalty for nuclear is societal, not technological. In other words, avoidable with policy change. 3. There are no significant improvements on the horizon for concentrated solar. Each piece considered alone is already a mature technology. How much more efficient can you make a mirror? There may be improvements for PV, but that's more expensive than nuclear. 4. Nuclear receives more subsidies than renewables only on...

## Solar Power Plants

Ricky Said:What are some safety issues with solar power plants?We Answered:I can't say I know this for sure, but I have a few guesses: -high current levels in connection wires from solar panels -high heat coming off of the panels My guess is that overall they are relatively safe, but some solar panels might be made with hazardous materials or chemicals that need proper disposal.Helen Said:what can solar power plants be used for?We Answered:The large power plants, if that is what this is about, feed their power into the national grid, and from that it "mixes" with all the other power from other...

## Solar Power Products

Russell Said:Solar Powered Products in Seattle?We Answered:I agree that you need to take a little time and read up on solar electric before buying. Once you know what you want you can make things a lot cheaper on yourself. You can order a complete system on line and have it shipped to your home. Then pick the contractor you want to install it. They are really not that hard to install when you order a kit. Check out this page to understand how to size a solar grid tie system or a grid tie with battery backup. There are links...

## Solar Power Pv Panels

Caroline Said:Converting my AC Air Conditioner to DC Motor make it anymore efficient with direct power from PV Panels?We Answered:It really would not do you any good. The only power you'd save would be that which an inverter draws, and that's minimal. We live off grid and I can tell you that running a central a/c unit with solar will be exceptionally costly to setup and maintain. We use wind and solar and batteries and have over \$25,000 in our system and I could not power a 220-v a/c unit....

## Solar Power Pv

Terry Said:Why are some against homeowner solar power subsidies, but sit back & accept Oil subsidies?We Answered:I'm totally against oil subsidies.. Oil is a dead end, any subsidy should be going to oil's replacement.. and pronto!...

## Solar Power Residential

Roland Said:When should 'new build' residential & industrial roofs have solar power? By legislation if necessary?We Answered:Solar only makes sense when the solar output can be reclaimed on a constant basis. In the US, even, this is only possible in the most Southern and Western states. Too much cloud cover does not enable the current solar voltaic converters to produce enough energy in the majority of the population centers of America. While it is true that some spectrum's of solar energy can penetrate cloud cover, todays cells are not currently efficient enough to warrant their cost. ...

## Solar Power Solar Cells

Hilda Said:How does solar power cells work,how can they be made at home.?We Answered:Conventional solar cells are semiconductor devices. Energy from sunlight triggers electrons in a doped silicon layer to 'jump' and that creates the movement that is an electric current. (That's a really simplified version). The average person cannot make silicon solar cells at home. You can, however, make very low energy solar cells with copper. Here's a link: http://worldwatts.com/homemade_solar_cel…Raul Said:can you give me homemade ways to use solar power without solar cells please?We Answered:hot water. many years ago i was travelling the backroads in hawaii. one day we...

## Solar Power Solar Energy

Ramon Said:is solar power different from solar energy?We Answered:power and energy are related to each other by the equation: P = E / T Where: P = power E = energy T = time So the amount of power you are using is the amount of energy you use divided by the time it takes to use it in. In other words, power is how fast the energy is coming in. You can rearrange that equation for energy and get: E = P * T Energy is the amount of power your using multiplied by the amount of time you're using it for. If you...

## Solar Power Solar Panels

Daisy Said:How Long Until Solar Power (solar panels) Becomes Cheap?We Answered:Between 5 and 15 years. Current thin film technology, which is the current hope for inexpensive solar panels, are just starting to get commericalized. At the solar conferences that I've been to in the last few months, I saw no vendors actually selling thin film technology, but I saw at least two companies selling fabrication lines for them. The presentations that I saw predict a 5 to 7 year horizen for thin film to become cost competitive with some of the more common energy production equipment. Assuming that...

## Solar Power System

Zachary Said:I have a mini solar power system setup. Do you think it will work out well?We Answered:rig it up to a multi metre and see how fast it charges to full load. take note on this; assuming if u have a 1000 amp hour ......it is recomended to draw only 10% which is......... 100 amps, if its a 800 amp hour batt.....its 80 amps.....but don t exceed 10% as it shortens battery life once drawn it has to be replaced asap. you have not given your batt size....Edna Said:good book or website on to completely set up a solar power system for...

## Solar Power Systems For Homes

Patricia Said:are there any contractors in North East OHIO that install Solar panels systems?We Answered:First go to http://www.getsolar.com/ohio/ then scroll down to Diversified Construction Management, Llc i believe they do local installing...

## Solar Power Systems

Sheila Said:Are there any water towers equiped with solar power purification systems in operation?We Answered:idk my bff jillKeith Said:Is the US involved in Space Solar Power Systems?We Answered:Mm... Is that what you want? http://l14.info/solar-powered-systemTina Said:experience with neighbors combining resources for solar power systems?We Answered:This is exactly how Germany has become the world's leading nation in distributed renewable energy. The German Government passed laws obliging utility companies to pay private individuals and groups for energy that they generate and feed into the national grid. These payments are called feed-in tariffs and they enable homeowners to get a reasonable payback on their...

## Solar Power Technology

Sean Said:I want to start a small business on solar power or green technology.Anyone know of a business I can start ?We Answered:http://www.entrepreneur.com/homebasedfra… I visit this site all the time for information. They have a section for franchises and home based business. First get a P.O. Box address if you are going to have any information mailed to you. You don't want junk mail in your mail box if you are not interested in the material. Good Luck! GREAT WEBSITE!Alfredo Said:Why is Spain so far ahead of us(US) in solar power technology?We Answered:Because their gov't will subsidize small potatoes non-economic power generating schemes...

## Solar Powered Home

Melanie Said:grants or refunds for solar/wind powered home?We Answered:Check out GovBenefits.gov http://www.govbenefits.gov for a listing of all government assistance programs you are entitled to based on your description For grants go to http://www.grants.govAmber Said:How do you feel about using solar-powered appliances or other installations at home?We Answered:We used to have solar pannels on our roof that powered some lightbulbs in our house. This was in the Philippines more than 10 years ago. It seemed to work, although I think there was some sort of back up power since we had lights even during cloudy and stormy days. I...

## Solar Powered Homes

Kay Said:If the electric car works, solar powered homes, wind power, etc. then why when politicians talk about energy.?We Answered:Oil companies have politicians in their MySpace. They're friends with benefits. Lots and lots of benefits.Carrie Said:Solar powered homes.?We Answered:my brother in law built a solar house in 1987, then moved to Alaska and built one 4 years ago but has since retired from building. you might try these sites. www.lipower.org/cei/solar.contractors.… http://www.solargenerations.com/download…Jimmy Said:Do you think that solar powered energy for homes will catch on in the Philippines?We Answered:Actually, the Philippines has the largest solar power plant in Southeast Asia and number...

## Solar Pv Array

Shane Said:Can you feed into your household electrical system from a solar-cell array?We Answered:First of all, solar cells produce low voltage DC, so you need batteries to store the DC, a charge controller to control the charging, and, most important, a good sine output inverter. The output from solar arrays varies all over the place so the charge controller and batteries are needed to control that. The inverter will shut down if the current goes too high, or the input voltage goes outside of specs. so you don't need any UV protection. The inverter generates the 120 volts 60Hz...

## Solar Pv Cell

Grace Said:How do you find out the efficiency of a solar cell with voltage and current measurements?We Answered:If you want an accurate measurement, you need a variable power resistor. 2 v and 0.2 amps is about 10 ohms, and the power is 4 watts. So if you can get a 20 ohm variable power resistor, you can measure the voltage and current at different load resistors, and calculate the power for each setting. Find the point where the power is at a maximum, and that is the maximum power output. You need to make these measurements with full sun on the...

## Solar Pv Cells

Steve Said:what is the optimal angle and positioning of solar pv cells?We Answered:Assuming passive (non-moving) panels, the optimum is to face south, pitched at an angle equal to your latitude.Alicia Said:Which is better: PV solar cells or solar troughs?We Answered:They have different uses. Solar cells capture light as electricity. Very useful, even on homeowner scale. Solar troughs capture light as heat. On homeowner scale, heat is useful for water heating and space heating, troughs can be used for this but there are better special-purpose devices on the market - like evacuated-tube water heaters. Using heat to make electricity is generally...

## Solar Pv Companies

Sergio Said:What type of solar pannels/pv would you buy? wind generators?We Answered:Let me add to your list. I would personally chose both wind and solar. http://www.google.com/products?q=solar+p… http://peswiki.com/index.php/Directory:V…Caroline Said:Where is the best place to learn about the solar PV industry and its competitive landscape?We Answered:for start try http://www.solarbuzz.com/Marketbuzz2008-… http://www.solarindustrymag.com/page.php… http://www1.eere.energy.gov/solar/myths.… check out Nanosolar thinfilm ,clames of \$/W <\$0.40 reported http://www.solarbuzz.com/StatsFunding.ht…Beth Said:Where do I find various solar companies in NJ for a possible PV install?We Answered:AltE is an online company that sells solar electric systems direct to the public, but has also teamed up with installers in NJ whom can provide a site analysis based upon your site and needs....

## Solar Pv Cost

Anne Said:Why Do People Not Believe in Solar When You Can Lease Solar PV in CA for the Cost of Your Electric Bill?We Answered:Other states aren't as fortunate as California in terms of amount of sun vs. electricity prices. California's rebate is small, as it has been ramping down for years. The Federal tax credit dominates, the same credit that is available in any state. Our system, which is 3 kW, supplies substantially all our electrical needs for the year. But we're a conservative user of electricity - no A/C, no electric heat, no pool pump, no big screen...

## Solar Pv Electricity

Dennis Said:If your household uses 5kw of electricity in a month will a 5kw solar (pv) system supply your needs? ?We Answered:It depends on your usage patterns compared to the output of the solar PV system. You'll need to also be charging up batteries to ride through the nightime hours and days with cloud cover, rain, or other conditions that will prevent maximum output of the PV system. If your loads cycle throughout the day, there might be enough power left over to charge the batteries. If your home's peak load is 5 kW, I suspect that is the mid-day peak demand with...

## Solar Pv Home

Anna Said:anyone have a solar home?We Answered:Things have changed a bit since Chuck did his study, but for most installations photovoltaic solar has a very slow payback. For example, my system cost about \$50,000 six years ago. It generates an average of about 20 kWh per day. At 12.6 cents per KWh, it saves me about \$75 per month. It does a bit more for me, though. I live alone and am able to put up with heating just one room in the house, with electric heaters. If I didn't have the solar system, I would...

## Solar Pv Installers

Brandon Said:Solar power for hot water??We Answered:There are 2 different systems used in solar thermal. 1st is having collectors on the roof and pumping glycol through the lines into a heat exchanger in the solar tank. The heat exchanger heats the water inside the solar tank, and then the existing hot water heater draws the hot water from the solar tank. The other way is with a strapon heat exchanger that is attached to the existing tank, utilizing a confined space. So if your just doing domestic hot water (water for shower, dishes etc...) you...

## Solar Pv News

Charlene Said:Why do people constantly ask about Solar Power, but just ask?We Answered:I am glad more Americans are showing interest in solar power. It will take time to catch on. Sometimes things have to get really bad before it can get better if you know what I mean. Where I live, we have solar homes as the norm and wind turbines atop areas of the mountain ranges. Most people here are not DIYers when it comes to these large panels although I see some rig up a small variety in their garden and I...

## Solar Pv Panel

Jamie Said:12V DC brushless fan - I want to run it directly off a PV solar panel - but what size panel?We Answered:Due to inefficiencies, you would most likely prefer to slightly oversize the solar panel. That provides more operating headroom during hours when the sun is not peaking, like in the winter and outside 10 am to 2 pm. Based on the 2 watt rating, somewhere around 5 to 10 watts for the panel rating is reasonable. If the motor is okay with slight over voltage (like 15 V) it should be okay to directly connect it. However, during...

## Solar Pv Panels Cost

Valerie Said:Three part survey -- please only honest answers?We Answered:1. Very concerned. I feel that we will find alternative fuels, but we seem, as a country to only get motivated in finding them when we are affected. Just look at gas prices the last year. When gas prices go sky high, then people buy the hybrids,etc. When gas goes back down, then it's back to the big SUV's. 2. Unfortunately, no...affordability is the main concern. 3. Yes. If somehow, the present power companies went into this business, then we'd all be better...

## Solar Pv Panels

Natalie Said:Why do people say solar panels are too expensive when in CA they lease/install at current electric bill rate?We Answered:That is all relatively new many people are not aware of the incentives.Philip Said:I have 18v solar panels and want to run a 12vdc system.?We Answered:Typically you will want 120% of the battery voltage to place a charge. This is why a car with a 12V battery has a 14.4 vdc charging current. There will be a voltage drop from the solar array to the charging controller to bring your 18 volts a bit closer. On a hot day...

## Solar Pv Photovoltaic

Ivan Said:Love you forever if u can help me......energy?We Answered:1. 10 mA at 200 W/cm² means 30 mA at 600 W/cm², since we're told that the current is proportional to the intensity. E = IR = (0.03 A)(4 ?) = 0.12 V. 2. P = E²/R = (0.46 V)²/(400 ?) = 5.3×10^-4 W = 0.53 mW.Marion Said:Electricity Output Help?We Answered:i. 1.2 kW --- 11 sq ft x kW --- 1200 sq ft (for one solar panel) x = (1200 * 1.2) / 11 = 130.909090... = 130.91kW ii. 130.91 * 5 = 654.55 kWh iii. Considering that 1 mile = 5280 ft 100 miles...

## Solar Pv Prices

Edith Said:Safety of hybrids?We Answered:There currently aren't any commercially available plug-in hybrids. Some Priuses have been converted to plug-in, but this voids the warranty and almost certainly decreases the battery life significantly. Plug-in hybrids will begin to be available in the next 3-5 years with the Chevy Volt and Prius plug-in model. In the meantime, hybrids are quite similar to regular cars. In fact, many are simply altered versions of regular models (Civic, Camry, Altima, etc. hybrids). Personally I own a Prius (greenest car on the planet by the way: http://news.yahoo.com/s/nm/20070727/sc_n… ) and it doesn't feel like...

## Solar Pv Systems

Douglas Said:Are there any ROI studies regarding concentrators and tracking systems for solar cells (PV)?We Answered:You might want to check out this website. It will cost you a pretty penny to have one installed. Make sure your home roof is designed for it. Good luck.Elizabeth Said:What will it take to get US residents to adobt more solar PV systems on rooftops?We Answered:More economic incentivesMinnie Said:Do you think all Grid tied Solar PV systems sell back to the grid?We Answered:I do not agree at all. I live in Phoenix which is one of the few ideal locations for solar. A system for...

## Solar Pv Technology

Ruby Said:Where can I find list of solar power project installations worldwide (existing and upcoming)?We Answered:http://www.solarbuzz.com/FastFactsIndust… this is a good site for this..Nicholas Said:is solar living a sham?We Answered:In most cases you're right. Solar is only really efficient in areas where: a) grid electricity is very expensive and it's Sunny (in which case it's easier to use 'grid tie' systems and sell electricity to the grid, rather than paying for batteries to store it) b) you aren't able to attach to the grid. If you live a mile away from the nearest grid connection, it costs a huge amount of cash to install a...

## Solar Renewable Energy

Joanne Said:what are the most profitable field when it comes to renewable energy is solar power?We Answered:While size matters PV systems rule the marketLeon Said:what is the the most profitable field when it comes to renewable energy is solar power?We Answered:Financially the most profitable for an individual that would have to be sales. Personally I find more satisfaction in using my mind and my hands over the use of my mouth in making a living and a contribution to the world....

## Solar Roof Panels

Lonnie Said:What is the best roof pitch for solar panels?We Answered:Tilted at latitude is typical for solar electric, so if you're at (say) 35 degrees south latitude, you'd face your roof to solar north (magnetic north is close enough), and have it pitched up 35 degrees from horizontal. If consistent power throughout the year is more important than total power, you might tilt at 15 to 20 degrees higher, to catch the short winter sun. If you're at a very low latitude, you would want some tilt so that the panels don't collect water and dirt. If you're in a place that gets...

## Solar Solar Panels

Linda Said:how can solar garden light solar lights be rejuvenated ... have tried cleaning the panels with negative result?We Answered:isopropyl alcohol can be purchased at your drug store. not very expensive. about the solar lights . they all do have batteries of one type or another and eventually need replaces with like type solar batteries which can be found at lowes or home depot and some drug stores. have you tried a lime remover spray on the light panels. sometimes there is sediment built up from the rainwater and air pollution.Walter Said:How do you figure how many solar panels you'll...

## Solar System For Home

Jeffrey Said:How trustworthy is to install a solar system at home?We Answered:I have had a solar system for 1 year and have had no problems. It is a 3.4 kw system with 20 208 watt panels on the roof. The warranty is 25 years on the panels and 5 years on the inverter. The system is designed to produce just less than I need as in PG&E land (northern California) you only get credit for what you use i.e.if you produce more than you use, it goes to PG&E and you get nothing for it. Mine cost...

## Solar Water Heater

Dennis Said:Is solar water heater cost effective?We Answered:I have often thought about building a pre-heater to assist my electric heater and cut down on costs. They will only work in certain locations with lots of sunshine and may be unattractive depending on where they are placed. You can build one with a metal tank with a pipe fitting on each end. Build a three sided box that the tank will fit into with glass on one side. Paint the tank and inside of the box flat black. The box is positioned so the the glass side is exposed to maximum...

## Solar Water Heating

Kelly Said:I want to instal solar hot water heating to the house. Where is a good place to get the materials from?We Answered:I saw a program on iON Life where thery had a computer and a windturbine and solar panels wired into it and that was connected tot he supply so that it coudl supply the grid or the home as needed. This may be of help: http://shop.solardirect.com/index.php?cP… This is good for a read: http://www.thisoldhouse.com/toh/article/… these have a lot of supplies: http://www.houseneeds.com/shop/solar/sol…Jessie Said:what colors should tubes be for a solar water heating system?We Answered:You should create a form of greenhouse situation around your pipes (which...

## Stand Alone Photovoltaic Systems

Gina Said:which photovoltaic system best meets the needs of homeowners?We Answered:I understand the question to be: For photovoltaic, grid or non-grid system? The economics are fairly clear. Photovoltaic systems are going to set you back a bundle. The cost to provide x number of kWh with this technology is about as high as it gets. Grid systems would allow you to sell back your excess capacity. Therefore, unless a local utility can be legally obliged to buy back your energy at a greatly inflated price vs. current wholesale (and no, I won't be surprised if an idiot scheme like that doesn't already...

## Sunpower Solar Panels

Jeanne Said:How can I become a solar panel dealer for companies like Sunpower, First Solar, Trina Solar, Evergreen etc?We Answered:First you need to contact them and inquire about franchise and dealership opportunities in your area. It would also behoove you to ask them for the names of current dealers who you could talk to to ask about their experiences.Julio Said:SunPower Solar Panels?We Answered:There is no difference between them besides their rated output. One may physically fit on you roof better than another, or look better, although the physical difference between those sizes is minimal. Go with whichever...

## The Photovoltaic Effect

Philip Said:Alexandre-Edmon Becquerel - what exactly did he discover?We Answered:For one thing , don't call him an old man!! He was only 20 when he showed that light can initiate chemical reactions that produce an electric current. His discovery opened up the idea that light energy might be transformed into electrical energy and led to the investigations that uncovered the photoelectric effect. Don't be too bothered about the different names used for the effect. If light energy is being transformed into electric energy then folk can call it what they like ( and obviously do ) but its all the...

## The Solar Cell

Peter Said:How does different coloured light affect solar cell output?We Answered:This is the photoelectric effect! The photo electric effect states that: KE = h*f -h*fo where h is planck's constant h*fo = the work function of the metal). ...

## The Solar Cells

Debra Said:How many solar cells would I need to charge and run my laptop at he same time.?We Answered:well that might get expensive. see you have solar power, which is direct current (dc) power that needs to be converted into alternating current (ac) power then back to dc power. so you will have to have power inverters and monitors and all that stuff or you will fry both of them. You know they make laptop bags now with flexible solar cells to charge your stuff without all that power loss and expensive equipment. the cord extends out from bag so...

## The Solar Energy

Frank Said:How expensive is solar energy to produce?We Answered:You do not produce solar energy; it is free from the sun. However it can be converted to electricity using solar panels. If you check a picture of a satellite or the space station in orbit, you will see large solar panels to produce electricity to run the machines. One environmental problem could be the disposal of old and derelict panels. I came accross a new, proven and tested home made wind power system and solar power system which eliminates our electricity bills. It was written by a Renewable energy enthusiasts Michael Harvey the...

## The Solar Power

Byron Said:How does solar power help the environment?We Answered:Most electricity today is created by burning coal or natural gas. This burning causes global warming and pollution. And huge complexes of wires criss cross our country. If every home had solar power, we'd need fewer electrical generation plants. Thus less pollution and fewer wires carrying the power. Imagine a solar power panel on every house's roof. Each home might be able to generate electricity and hot water for their own needs. This avoids pollution, global warming, carbon dioxide emissions, etc. Solar panels would probably involve plumbers, carpenters and electricians. Are these the kind...

## Types Of Photovoltaic Cells

Tina Said:What type of alternative energy source do photovoltaic cells require?We Answered:Both of the above. Oddly enough photovoltaic cells (solar cells) while being called "alternative energy devices" are actually using one of the earliest energy sources known to humanity. Solar energy (sunlight ) has warmed the skin of people since there were people. The actual source being the sun which undergoes nuclear reactions and pours it's energy out upon the entire solar system. Very unlikely we would survive without it. This is the case of many "alternative sciences", which have been around for a long, long time. Wind energy has been...

## Used Solar Panels

Sara Said:i want to make solar panels for my 6v battery for charging where i get cheap or used panels in Delhi?We Answered:Try Harbor Freight on the net.Erin Said:New to Solar:Can I use solar panels designed for ATV batteries to power my garage lights?We Answered:To run lights...you will need solar panels which charge the batteries and an inverter to run the lights...the lights will have to be wired to this...(this is just a basic rundown)...for more info go to your local store...check yellow pages..to discuss what you will need at a specialized store for solar (not hardware store)..then you will...

## Using Solar Panels

Gladys Said:Anybody using solar panels for charging inverter batteries?Wat is the cost for each solarpanel and its rating?We Answered:Yeah, we are off the grid and have 10 panels @ 130W charging 16 6V batteries. The whole system was about \$13k. Generally panels cost about \$5/watt, uninstalled. You need to have a complete system designed though, you should def talk to a local solar expert.Melanie Said:How do I charge two 12V batteries using two solar panels that are 15V each and 5 AMP each?We Answered:yes, it's called a charge controller. A 15 volt panel is marginal to charge a...

## What Are Photovoltaic Cells

Leon Said:what is an element that is for use in making photovoltaic cells that are constructed w semi-conductors?We Answered:silicon and cyanide and arsenicKarl Said:I am trying to understand photovoltaic cells... is there a kit or assembly available that would?We Answered:here is a kit this looks pretty cool and seems to come with everything you would need http://www.hometrainingtools.com/product… http://www.siliconsolar.com/build-your-o… http://www.crutchfield.com/p_71640235/MA… if none of these are what you were looking for i would recommend sending these folks a request http://www.solarhome.org/customerservice… good luck ;) http://www.newenergyshop.com/htm.Solar.P… check out the last kit assemblyJulio Said:what is The use of improved photovoltaic cells?We Answered:1. Get electrical energy from sunlight 2. Get more electrical energy...

## What Are Photovoltaics

Marsha Said:want to pursue a career in photovoltaicsWe Answered:MS or PhD in solid state physics if you want to research the process. Engineering (electrical, mechanical, thermal, semiconductor) if you want to design collectors or systems. Business if you're interested in the business aspects. Economics and government if you want to influence public policy. Carpenter/electrician apprentice if you just want to install them....

## What Are Solar Panels

Vanessa Said:What are the solar panels by the side of the track for?We Answered:The solar panels are most often recharging battery back-up systems for any electronic devises near by, such as trackside detectors, signal relay bouses, signals, crossing protection and so on. In the more remote areas of the country, where electricity lines have not yet reached, they are the primary source of power for these types of devices, which in fact are bettery operated.Suzanne Said:What are the drawbacks to using wind turbines or solar panels for providing all power to a home?We Answered:again trying to help..again thnx 4 the previous......... nothing...

## What Is A Photovoltaic Cell

Harvey Said:What on earth is a photovoltaic cell?!?!?!?!?We Answered:A solar cell (or a "photovoltaic" cell) is a semiconductor device that converts photons from the sun (solar light) into electricity. In general a solar cell that includes both solar and non-solar sources of light (such as photons from incandescent bulbs) is termed a photovoltaic cell. Fundamentally, the device needs to fulfill only two functions: photogeneration of charge carriers (electrons and holes) in a light-absorbing material, and separation of the charge carriers to a conductive contact that will transmit the electricity. This conversion is called the photovoltaic effect, and the field of...

## What Is Photovoltaic Cell

Roland Said:how do i know what is the Photovoltaic cell capacity required to run my home supplies on 240V using grid-tied?We Answered:The main factor of PV array size is your location. If you use about 7200 kWh per year, then depending upon your location, you may be able to use a 5-7kW system and produce up to 100% of your usage. At an average of \$8-\$10 USD per installed Watt, that would cost roughly \$50,000-\$70,000 before any rebates or incentives. When investing in solar electric systems, it pays to invest in energy efficiency first to lower your...

## What Is Photovoltaic Cells

Jack Said:What are solar photovoltaic cells?We Answered:A solar cell is a device that converts the energy of sunlight directly into electricity by the photovoltaic effect. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight, while the term photovoltaic cell is used when the light source is unspecified. Assemblies of cells are used to make solar panels, solar modules, or photovoltaic arrays. Photovoltaics is the field of technology and research related to the application of solar cells in producing electricity for practical use. The energy generated this way is an example of solar energy...

## What Is Photovoltaic

Louis Said:What is the environmental impact of photovoltaic semiconductor fabrication?We Answered:Not only the cost in terms of money but also the cost in terms of energyWendy Said:Will a photovoltaic cell convert electricity from alpha, beta or gama radiation?We Answered:The short answer is no. The key is what the material in the cell is responsive to, and most of these materials will be easily penetrated by high energy photons, or simply attenuate the photon completely, not "convert" it into electrical energy. While there are thermovoltaic cells, these utilize EM from the non-ionizing side of the visible light portion of the EM...

## What Is Photovoltaics

Curtis Said:What is islanding in relationship to photovoltaics?We Answered:Islanding is the undesirable effect of having electricity still in the line when the line is disconnected, a distributed source is still transmitting power.Veronica Said:What career would best encompass photovoltaics and the engineering of them?We Answered:For construction of photovoltaics, a Materials Scientist, or Materials Engineer would be necessary. For applications of photovoltaics, an Electrical Engineer would be appropriate. .Kent Said:What did the oil crisis of '73 have to do with the popularization of photovoltaics?We Answered:Oil = Energy Electricity = Energy During the oil crisis of 1973 it was very hard to get gas. You could...

## What Is Solar Energy

Peggy Said:How solar energy can be generated at competitive cost?We Answered:Professor Andrew Blakers from The Centre for Sustainable Energy Systems at the Australian National University will today report to the Greenhouse 2000 Conference in Melbourne that photovoltaic (PV) solar energy conversion can be cost-competitive with any low-emission electricity generation technology by 2030. His paper describes how extrapolation of the huge economic and technical gains made by photovoltaics over the last 15 years gives confidence that a dramatic shift in electricity generation technology over the next quarter-century is possible. Worldwide photovoltaic sales are growing at 40 to 50% per year. Government research &...

## What Is Solar Photovoltaic

Fernando Said:what are some problems with solar photovoltaic cells?We Answered:Actually, the loss efficiency is more in the 0.5% - 1% per year. There is no way the manufacturer would guarantee a 25 year warranty, if it losses production at 5% a year. They typically guarantee a efficiency of more than 80%. I would say the main problem with solar is that it is not for every household. Homes that have less than \$100 in electricity bill wouldn't benefit much from installation. Cost is high, but there is the government and federal gov't helping pay for...

## What Is Solar Power

Christian Said:please help me find stores that sell solar plates in the phils. what is the downside in using solar power?We Answered:Catalog shopping is your best bet. Try American Scientific & Surplus, or perhaps Harbor Freight Tools, (at least that's what I use, this is not an endorsement). You will need a power inverter of the appropriate wattage to handle whatever it is you want to power. A deep cycle battery or two will also help. As for the downside, cloudy days don't help much, solar panels are kinda fragile, they don't charge at night (obviously),...

## Wholesale Solar Panels

Tiffany Said:Home upgrades yes or no?We Answered:YES. >.Ted Said:How Much Do BP Solar Panels Cost In The Wholesale US Market?We Answered:Wholesale prices for BP solar panels range between \$335 for the 40 watts panel to \$835 for the 170 watts panel. Here's a brief listing of wholesale prices for BP solar models: - BP340J solar panel (40 watts) @ \$335 - BP350J solar panel (50 watts) @ \$371 - BP375J solar panel (80 watts) @ \$504 Right now I'm getting a series of 50 watt (17.5 volts) panels installed in my house. It's a start to reduce dependence on electricity bills and try get some...

## Working Of Solar Cell

Susan Said:Solar Panel - Cell Resources and Calculations?We Answered:The two wiki links below provide basic explanations that are good starters. They also lead to other information. You do not mention much about the actual project, so I can only guess what level to pitch the answer. In practical situations you will not be able to work out Solar panel performance by a formula, but by looking up the manufacturer's specification (data sheet). From that you have the power in watts that can be drawn from the panel for "standard sun" which is taken as 1000W/m^2 at a standard temperature, usually 25C....

## Working Of Solar Cells

Kurt Said:Why solar cell can't produce current when they receive fluorescent light?We Answered:Not all light is the same. The cells will only work with a certain wavelength, or range of wavelengths, of light. Sunlight contains most visible, and some invisible light, whereas fluorescent lights do not; your fluorescent lights clearly don't produce the wavelength of light needed to get power from your solar cell, but the fire (or some other artifical light source) might, so try it.Julie Said:Using geothermal to cool solar cells?We Answered:There are solar "cells" that use the sun for vapor evaporation and condensation and these do rely...

## Working Of Solar Panel

Ricky Said:how to design a solar panel to store energy and convert it into electrical energy?We Answered:solar panels change light into electricity, and do NOT store power. You need a solar panel capable of enough power to keep the light on all night. And that may be 6 hours of sun and 12 hours of dark. Then you need a set of batteries large enough to hold that energy. And a charge controller to regulate the charge into the batteries. And then a light that will operate on the battery voltage, say 12 volts. This is probably not practical due...

## Working Of Solar Panels

Howard Said:Can Solar Panels help stop global warming?We Answered:The only thing they do is replace other forms of power generation, like fossil fuels. For that, they help stop global warming. It doesn't matter if the light is converted to heat or electricity. Eventually, all energy ends up as heat, like your TV or microwave. And all that light is shining down on the surface of the Earth whether or not a solar panel is underneath it.Pearl Said:What are the limits of solar panels?We Answered:Under a full moon your solar panels can put out full rated voltage but no amperage. You do...