Arizona Public Service Co. and Tucson Electric Power will soon ask regulators to greenlight a rate hike for customers.

The state Legislature delivers Arizona Public Service Co., the state's largest electricity provider, two huge financial wins ...

The demand for electricity in Arizona is so great that we'll have to double the size of our grid in the next 15 years. We ...

Two of Arizona’s largest electric utilities plan to ask state regulators for permission to raise their rates in 2026.

Arizona Public Service (APS) is seeking another rate increase, days after Gov. Katie Hobbs signed two sweetheart bills for the utility. Hobbs and state lawmakers have accepted large political ...

Federal efforts to boost nuclear power projects nationally could have impacts in Arizona as APS, SRP and TEP explore building a new power plant.

An Arizona utility regulator defended APS after it cut off Kate Korman's power. But at least public pressure compelled his ...