By Roy L Hales
The first zero net energy building in the United States was erected at the beginning of this century. In California this standard has penetrated the residential market and every new home will have to produce as much energy as it consumes by 2020. The Net Zero Plus Electric Training Institute (NZP-ETI), in Greater Los Angeles, goes further. America’s largest net zero plus building is expected to generate an additional 185,000 KWh of electricity by the end of year one.