Cal. PUC § 401

(a) The Legislature finds and declares that the public interest is best served by a commission that is appropriately funded and staffed, that can thoroughly examine the issues before it, and that can take timely and well-considered action on matters before it. The Legislature further finds and declares that funding the commission by means of a reasonable fee imposed upon each common carrier and business related thereto, each public utility that the commission regulates, and each applicant for, or holder of, a state franchise pursuant to Division 2.5 (commencing with Section 5800), helps to achieve those goals and is, therefore, in the public interest.

(b) The Legislature intends, in enacting this chapter, that the fees levied and collected pursuant thereto produce enough, and only enough, revenues to fund the commission with (1) its authorized expenditures for each fiscal year to regulate common carriers and businesses related thereto, public utilities, and applicants and holders of a state franchise to be a video service provider, less the amount to be paid from special accounts except those established by this article, reimbursements, federal funds, and the unencumbered balance from the preceding year; (2) an appropriate reserve; and (3) any adjustment appropriated by the Legislature.

(c) For purposes of this chapter, an “appropriate reserve” means a reserve in addition to the commission’s total authorized annual budget to regulate common carriers and related businesses, public utilities, and applicants and holders of a state franchise to be a video service provider, to be determined by the commission based on its past and projected operating experience.