The state of California’s Public Utilities Commission has adopted a new target of reducing greenhouse gas emissions by 56% from 1990 levels by 2030, an increase on its previous target of 40%. To meet the target (of 46 million metric tonnes of CO₂-equivalent emissions), California’s power producers will need to almost double the present amount of renewable energy and storage capacity – about 25 GW in total, of which around 8.9 GW would be storage (eight times the capacity that existed in the entire USA at the end of 2018). Utilities will also be required to submit plans to meet an even more stringent goal of 38 million tonnes, though at present that target will not be a requirement. The Public Utilities Commission also closed a loophole of allowing the development of new gas-fired plants if they were accompanied by storage facilities, though the expansion of existing plants will be allowed under the same conditions. New gas plants will be allowed if they burn biomethane.