Have you looked into solar power?

If you've thought about buying a solar power system in the past but it didn't make sense, you may want to look again. That's because there is a big glut in inventory and prices have fallen dramatically. Also, there are a number of solar companies that are willing to lease their equipment to eliminate some or all of the upfront cost of installing it. I've highlighted some of the factors to consider on whether or not solar power can save you money.

http://www.budgetways.com/saving-money-with-solar-power.html