This page has information about energy efficiency and alternative energy, needed to make our homes and buildings less dependent on fossil fuels.
In My Backyard tool: A tool that allows you to measure the energy potential for solar panels on your roof using Google Maps (not limited to DC).
Solar Decathlon: a university competition where teams from all over the world compete to build the best solar-powered structure and display them on the DC Mall
Solar Tour of Homes
EnergySavers.gov: The U.S. Department of Energy's consumer website on saving money and energy.