Posted in Photovoltaics

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…

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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…

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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…

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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 efficient design.. A wind turbine produces electricity, and so does a photovoltaic cell.. combining them would not help.. it is as if you are installing two batteries to supply…

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Home Solar Electricity

Ted Said: Solar energy aparatus for homeuse/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…

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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…

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Cost Of Solar Cells

Don Said: What would be the cost of the solarcells 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…

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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…

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Posted in Photovoltaics

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…

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Posted in Photovoltaics

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…

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