Starting in 2020, all new single-family homes and multi-family buildings that are three stories or less in California must be constructed with solar panels. California was the first state to pass such a law, which is part of a bigger plan to be free of fossil fuels within 20 years.
Even with the solar panel requirement for homes, that doesn’t mean the end of some natural gas-burning. When the sun goes down, especially during hot months, solar energy won’t be enough to power many homes, so additional sources are needed.
California is also pushing other energy initiatives. The state is planning on getting half of its power from renewable sources like wind power by 2030. The plan is working so well that officials say that goal may be reached 10 years early, by 2020.