California Energy Commission’s 2022 building code includes mandatory electric appliances and rooftop solar for new construction statewide.

Starting in 2023, new buildings in California must use less Energy, and cut carbon pollution, through reduced use of fossil fuels for energy, according to the California Energy Commission (CEC)’s 2022 update of its building code. Requirements include use of residential electric heat pump space and water heating, versus units powered by natural gas.