California Code, Public Resources Code - PRC § 25704.5

(a) The Legislature finds and declares all of the following:

(b) On or before December 31, 2023, the commission shall, as part of a transparent public process that includes input from industry stakeholders, and in direct collaboration with representatives of local publicly owned electric utilities and the Independent System Operator, develop recommendations about approaches to determine an appropriate minimum planning reserve margin for local publicly owned electric utilities within the Independent System Operator balancing authority area sufficient to ensure each local publicly owned electric utility is adequately accounting for its contribution to reliability in the Independent System Operator balancing authority area.  The approaches shall take into consideration climate change, extreme weather events, cost effectiveness, and feasibility, and may vary by utility type.  The recommendations shall include an implementation timeline taking into account potential impacts on resource needs and availability of clean energy resources.  These recommendations shall be used by local publicly owned electric utilities in conformance with subdivision (b) of Section 9620 of the Public Utilities Code.  The commission shall from time to time revise, as appropriate and in accordance with the process set forth in this subdivision, the planning reserve margin recommendations to ensure that each local publicly owned electric utility is adequately accounting for its contribution to reliability.