The state's largest electric utility acknowledged Wednesday that it settled claims with the survivors of two other customers who were found dead in their homes, not counting last year's death of 72-year-old Sun City West resident Sandra Pullman.

With three seats open and five Republicans already filed to run who have ties to Arizona Public Service, the Arizona Corporation Commission is shaping up for a big election in 2020. Kim Owens, the latest Republican candidate to jump into ...

The newest state utility regulator wants an outside investigation of the heat-related death of an Arizona Public Service customer and the policies of the Arizona Corporation Commission and the actions of its staff that may have contributed to that.

Gov. Doug Ducey on Thursday tapped former Republican congressional contender Lea Marquez Peterson to the agency that decides how much utilities can charge their customers.

Having burned through $28 million in a pair of losing political battles in Arizona last year, California billionaire Tom Steyer is now prepared to pump some more cash into the state.

It’s been more than a decade since the Arizona Corporation Commission approved the Renewable Energy Standard and Tariff, requiring Arizona utilities to generate 15 percent of their power from renewable sources by 2025.

The state’s largest electric utility admitted late Friday that it gave $10.7 million to organizations that spent heavily in the 2014 race for the Arizona Corporation Commission, which regulates energy companies.

State utility regulators are making another bid to find out how much money the state's largest electric utility is spending on political campaigns and lobbying.

Arizona Public Service this morning announced a major investment in solar battery, a historic shift in the utility’s approach to renewable energy.

2018 has been an exciting year from the start. As it comes to a close we’re looking back on some of the standout moments.