Section 729 Of Article 2. Rates From California Public Utilities Code >> Division 1. >> Part 1. >> Chapter 4. >> Article 2.

. The commission may, upon a hearing, investigate a single rate, classification, rule, contract, or practice, or any number thereof, or the entire schedule or schedules of rates, classifications, rules, contracts, and practices, or any thereof, of any public utility, and may establish new rates, classifications, rules, contracts, or practices or schedule or schedules in lieu thereof.