IThe windmill approximately costs you $100, and the solar panel is roughly $120. So, let's bump it up to $250, since you may not be able to get all the parts for cheap. What is responsible for the flow of the electrons is caused by the material that is all on the solar energy panel. A black metal or even a wooden box gets designed for a certain size and then get installed on the roof of your house. This program will teach you how to build your own solar panels or wind mills for under $200. All the supplies you'll need to build them will be found at your local hardware store.
Solar Power How It Works
Solar Power How It Works
