It’s official: any new homes built in California after 2020 will have to be at least partially solar powered.
The California Building Standards Commission voted unanimously to approve new standards that require new homes to offset their electricity needs, the Orange County Register reports.
Other requirements part of the new “green” building codes include thicker insulation, more efficient doors, and improved ventilation systems. The new solar power requirement applies to any new buildings that are up to three stories high — including apartments. Homeowners will also have the option to generate or buy electricity for a local community- or utility-owned electricity grid.