General FAQ

The Arizona Corporation Commission (ACC) is a state agency that regulates investor-owned electric and gas utilities in Arizona. The ACC also regulates water and wastewater utilities, telephone companies, transportation companies, and securities broker-dealers. The five Commissioners are elected by the voters of Arizona to serve four-year terms.

The Arizona Renewable Energy Standard & Tariff (REST) requires electric utilities to gradually increase their use of renewable energy sources. By 2025, Arizona’s regulated electric utilities must generate 15 percent from renewable resources. Each year, utility companies must submit annual implementation plans to the Arizona Corporation Commission (ACC) that show how they will meet the state’s Renewable Energy Standard & Tariff (REST) rules.