Solar panels on the roof at KB HomeÂ's Double ZeroHouse 3.0 in El Dorado Hills on Tuesday, September 30, 2014.
Solar panels on the roof at KB HomeÂ's Double ZeroHouse 3.0 in El Dorado Hills on Tuesday, September 30, 2014. Randall Benton rbenton@sacbee.com
Solar panels on the roof at KB HomeÂ's Double ZeroHouse 3.0 in El Dorado Hills on Tuesday, September 30, 2014. Randall Benton rbenton@sacbee.com