The California Public Utilities Commission (CPUC) voted unanimously on September 3 to initiate a significant overhaul of the rules governing how electric and gas utilities across the state file and justify their requests for rate changes. This decision formally opens a rulemaking process to rewrite the General Rate Case Plan, a foundational framework that has not seen comprehensive updates since 2007.

The commission’s stated intention for this new proceeding is multi-faceted, aiming to modernize and strengthen the regulatory process. According to meeting materials and the transcript, the rulemaking seeks to standardize utility filings, fostering greater consistency and clarity in the information presented. Another primary goal is to improve transparency within the rate-case process, ensuring that the public and regulators have a clearer understanding of the utilities’ financial justifications. Furthermore, the updated plan is intended to bring the existing process into alignment with more recent state statutes, specifically citing Assembly Bill 2666, Assembly Bill 2847, and Senate Bill 254.

A key aspect of the revised General Rate Case Plan will be a more direct connection between utility rate-case filings and wildfire mitigation efforts. The commission has indicated that, beginning with filings submitted after January 1, 2027, utilities will be required to integrate energy-safety-approved wildfire mitigation plans directly into their rate-case requests. These filings must also include the forecasted costs associated with these mitigation plans. Once the commission approves these initial plans, utilities will then be expected to submit revised plans as part of their ongoing regulatory compliance.

The unanimous vote, described as an "order instituting rulemaking to revise the General Rate Case Plan" in the commission's meeting materials, saw all five commissioners approve Item 50 during the public voting meeting held on September 3. The decision passed with a 5-0 margin, reflecting a consensus among the regulators on the necessity of these changes.

While the September 3 voting meeting also included other actions pertaining to Pacific Gas and Electric Company (PG&E) and facilitated public comments regarding landline service in California, the decision to overhaul the utility rate-case rules stood out. This move was characterized in the commission's agenda as one of the most consequential policy actions addressed during that session. The initiation of this rulemaking sets the stage for a significant transformation in how utilities present their financial needs to the state, with a clear emphasis on modernizing the process, enhancing public oversight, and explicitly linking rate justifications to critical energy safety and wildfire prevention strategies. The changes are set to take effect for utility filings submitted after January 1, 2027.