Taking down this Santa Rosa, CA home built in 1944 and Building a new Net Zero Energy Home!
From Wikipedia: A Net Zero Energy home is a building with zero net energy consumption, meaning the total amount of energy used by the building on an annual basis is roughly equal to the amount of renewable energy created on the site, or in other definitions by renewable energy sources elsewhere. These buildings consequently contribute less overall greenhouse gas to the atmosphere than similar non-ZNE buildings.