A Solar Panel?
We found the solar panel a little more difficult to construct than the windmill, but it was well worth the effort, and Earth4Energyreally explains how to do this really well.
This was a little more expensive than constructing the windmill, maybe ($150). The solar panel system will take the sun’s energy and convert it into electricity. It can then be hooked up to your household grid and be used to power the appliances in your home. What’s even better is that if you ever generate excess energy from the windmill or solar panel system, most utility companies allow you to sell the excess energy back to them.