PV Gap

Kelly Said:

I need help with this physics solar power question please?

We Answered:

If you getting 20 watts for your solar panel and you need 3,000 watts then you need 150 square meters of panels. If you have a yard that big and a rich dad to buy the panels you can do it for sure.

Jamie Said:

Should we convert to solar power to help prevent global warming?

We Answered:

Yes we should but is it too late I ask? Something should have been done about it 10/20 years ago. The kyoto aggreement was accepted by most governments but rejected by the Australian Gvnmt. Only now are they reconsidering becoming a part of it. It may help with your essay to look up "Kyoto" for more information. Is is relevant to the prevention of global warming. We need to do alot more on this subject. We want to leave a safe and viable earth for our ascendents.

Cathy Said:

Why do solar panels convert power to DC?

We Answered:

The electrical current generated by the cells is DC and there is nothing that you can do about it except to attach an inverter if you want AC

Maybe this will help explain it:
http://tinyurl.com/32h4bbz

Danny Said:

i live near death valley and would like to convert to solar power.i am on disability and can't afford it ?

We Answered:

You can buy a really good solar cooker for about $200. The Death Valley area is just made for that.

If your funds are really limited, I don't think solar electricity will be a realistic possibility for you. Even with California and Federal rebates, the smallest grid-tied system will cost $5000 net, and a typical system will be more like $20,000. If you live in a small trailer or RV, you might be able to get an RV-type system for less. But it would still be more expensive than grid electricity over its lifetime.

Juanita Said:

At a certain location, the solar power per unit area reaching Earth's surface is 200?

We Answered:

It's simple math.
1 m^2 of solar panel generates an average 10%*200 W = 20 W.
You need an average 3000 W, which is 150 times as much, so you need 150 m^2 of solar panel.
An average power of 3000 W is pretty large for a typical house. Is there a sawmill hidden inside?

Renee Said:

At a certain location, the solar power per unit area reaching the Earth's surface is 215 W/m2?

We Answered:

e*A*(215)=3000
A=3000/((215)(0.14))
A=99.7 m^2