CCS Architecture designed this sustainable beach house in Stinson Beach, CA, as a second home for a San Francisco family. The design follows a rigorous sustainability program; photovoltaic panels generate all the home's electricity, sending surplus energy back to the grid. All the home's systems - hot water, HVAC, and radiant heating - are integrated, electric-based, and powered by the PV panels on the roof. With the exception of a propane tank which powers the cooking range, the home is net-zero in terms of its energy consumption.