Cal. PUC § 362

(a) In proceedings pursuant to Section 455.5, 851, or 854, the commission shall ensure that facilities needed to maintain the reliability of the electric supply remain available and operational, consistent with maintaining open competition and avoiding an overconcentration of market power. In order to determine whether the facility needs to remain available and operational, the commission shall use standards that are no less stringent than the Western Electricity Coordinating Council and North American Electric Reliability Council standards for planning reserve criteria.

(b) The commission shall require that generation facilities located in the state that have been disposed of in proceedings pursuant to Section 851 are operated by the persons or corporations who own or control them in a manner that ensures their availability to maintain the reliability of the electric supply system.

(c) Consistent with Section 851 and the commission’s regulation of transfers of operational control of electrical corporation facilities, an electrical corporation subject to commission Decision 98-01-053 (January 21, 1998), Joint Application of Pacific Gas and Electric Company (U 39-E), San Diego Gas and Electric Company (U 902-E), and Southern California Edison Company (U 388-E) for an Order under Public Utilities Code Section 853 Exempting Them from the Provisions of Section 851 or in the Alternative for Authority to Convey Operational Control of Designated Transmission Lines and Associated Facilities to an Independent System Operator, shall participate in the Independent System Operator.

(d) An electrical corporation shall not withdraw a facility from the operational control of the Independent System Operator without commission approval pursuant to Section 851.