AB 825 removes those conditions, opening up the possibility of a more regionalised energy market coming into force in California, and one that can adjust bills to suit consumers on a local level. The bill authorises the ISO, from the beginning of 2028, to implement tariff modifications, accepted by the Federal Energy Regulatory Commission (FERC) and adopted by independent regional organisations, based on regional differences in energy mixes. “SB 302 will keep energy project costs down by allowing California energy developers to realise the full value of federal tax incentives,” explained Doyle. PV Tech publisher Solar Media will host the 12th edition of the Solar & Storage Finance USA event on 21-22 October 2025 in New York. Panellists will discuss the fate of US solar and storage in a post-subsidy world, the evolving economics of standalone BESS and de-risking solar and storage supply chains.