It was a happening week in D.C. for renewable energy and energy efficiency. The green building industry got a brand new version of LEED, and the Sustainable Energy Expo showcased some great new energy technologies on Capitol Hill. Above is my intro video for the event, which includes a brief interview with 25x25, the renewable energy association which is promoting 25 percent renewables in the U.S. by 2025.

Here are the links to the six most interesting technologies on display: