We are now harnessing the power of the sun! If you're going to do it, Arizona is the perfect place. While it doesn't take us completely off the grid, it does qualify for the renewable energy incentive from the power company. (When I say "we" and "us" I really mean my mom and her husband, as this is not my house - I just occupy the guest room. haha!)
How does it work? Well, I'm not going to go into the complex details (because I don't know them), but I can give you the basics. Our solar produces, on average and estimate 1/3 of the electricity we use. So we do still get power from the power company for that extra 2/3. If we happen to produce more energy than we use, it gets sent/sold/banked back to the power company.