California will need to triple the capacity of its power grid and may have to add 6,000 megawatts of new renewable and storage facilities a year to meet state targets of 60% renewables by 2030 and 100% by 2045, according to a joint report in March by the California Energy Commission, California Public Utilities Commission and the California Air Resources Board.

Over the last decade, the state has installed an average of 1,000 megawatts a year of new utility-scale solar and 300 megawatts of wind. Regulated utilities in the state are expected to install another 8,000 megawatts of renewable energy generating capacity over the next three years.