The California Public Utilities Commission (CPUC) is a state agency responsible for regulating privately-owned public utilities in California. This includes services such as electricity, natural gas, telecommunications, water, and transportation. The CPUC ensures that these utilities provide safe, reliable, and affordable services to residents and businesses. The commission also oversees the implementation of state policies related to energy efficiency, renewable energy, and telecommunications. By setting rates and enforcing regulations, the CPUC aims to protect consumers while promoting fair competition and innovation within the utility sector.