California Public Utilities Commission

The California Public Utilities Commission (CPUC or PUC) is a regulatory agency that regulates privately owned public utilities in the state of California, including electric power, telecommunications, natural gas and water companies. In addition, the CPUC regulates common carriers, including household goods movers, limousines, rideshare services (§ Transportation network companies), self-driving cars, and rail crossing safety.

Source: Wikipedia — California Public Utilities Commission (CC BY-SA 4.0)