Cal. Health & Safety Code § 41514.10

On or before January 1, 2003, the state board shall issue guidance to districts on the permitting or certification of electrical generation technologies under the districts regulatory jurisdiction. The guidance shall address best available control technology determinations, as defined by Section 40405, for electrical generation technologies and, by the earliest practicable date, shall make those equivalent to the level determined by the state board to be the best available control technology for permitted central station powerplants in California. The guidance shall also address methods for streamlining the permitting and approval of electrical generation units, including the potential for precertification of one or more types of electrical generation technologies.