Energy-efficient renovation makes Petworth rowhouse a ‘net-zero’ building – Washington Post

Energy-efficient renovation makes Petworth rowhouse a 'net-zero' building
Washington Post
… energy it once required. With the addition of solar panels on the roof, it is expected to produce all of the energy it will take to run the four-bedroom, 3 1 / 2-bath home, possibly allowing the new owner to say goodbye to electric bills …