A 2,400 square-foot home in Cupertino, Calif., is net-zero in energy, according to JetsonGreen.com.
A net-zero energy home is one that uses as much energy as produces on an annual basis and produces no carbon. The home in Cupertino, which was designed by LMS Architects and built by Earth Bound Homes, also uses only electricity and solar hot water without using carbon-based fuels.
