California Code, Public Utilities Code - PUC § 398.3

(a) Beginning January 1, 1998, or as soon as practicable thereafter, each generator that provides meter data to a system operator shall report to the system operator electricity generated in kilowatthours by hour by generator, the fuel type or fuel types and fuel consumption by fuel type by month on an historical recorded quarterly basis. Facilities using only one fuel type may satisfy this requirement by reporting fuel type only. With regard to any facility using more than one fuel type, reports shall reflect the fuel consumed as a percentage of electricity generation.

(b) The Energy Commission shall have authorization to access the electricity generation data in kilowatthours by hour for each facility that provides meter data to the system operator, and the fuel type or fuel types.

(c) With regard to out-of-state generation, the Energy Commission shall have authorization to access the electricity generation data in kilowatthours by hour at the point at which out-of-state generation is metered, to the extent the information has been submitted to a system operator.

(d) Trade secrets as defined in subdivision (d) of Section 3426.1 of the Civil Code contained in the information provided to the system operators pursuant to this section shall be treated as confidential. These data may be disclosed only by the system operators and only by authorization of the generator except that the Energy Commission shall have authorization to access these data, shall consider all these data to be trade secrets, and shall only release these data in an aggregated form such that trade secrets cannot be discerned.