Solar-powered homes were rare even as recently as a decade ago. But a variety of federal and local tax incentives along with increasing concern about climate change have made them more and more common.
If you are concerned about making an impact on the environment, installing solar panels can greatly reduce your household carbon emissions. According to a recent MIT study the average annual carbon emissions produced by a United States citizen is around 20 metric tons. To put that into perspective you would have to plant roughly 470 trees neutralize that amount of carbon dioxide. (info provided by our friends at www.carbonfund.org)