Assuming you are grid-tied, the reduction of electric bills is predicated on net metering, where the utility company gives you (ideally) 1-for-1 credit for the electricity you produce. In California, this was called NEM 1.0 and NEM 2.0. Every few years the California utilities lobby the Public Utilities Commission (PUC) to chip away at the NEM program. This year the PUC voted unanimously to cut net energy metering and any new solar owner will fall under the NEM 3.0 rules. Net energy metering is essentially dead in California. In addition there are additional fixed fees customers have to pay. This will disincentivize solar-only installation. If you want fair compensation of what you generate you’ll have to store it and pay yourself.
PG&E will find a way to keep their profit margin.
https://www.npr.org/2022/12/15/1142927418/california-plans-t...