After more than five years as one of the most influential behind-the-scenes players in Arizona politics, Don Brandt took center stage at the Arizona Corporation Commission on September 4 to answer questions about shut offs and political spending, among other topics.

The incoming chief executive of Pinnacle West Capital Corp. refused Wednesday to promise that the company won't spend money in the future to elect utility regulators of its choosing.

The head of the state's largest electric company is stepping down, but not before utility regulators get a chance to grill him next month on company practices and policies.

Customers of the state's largest electric company are apparently stuck with the bills they're getting now, at least for the foreseeable future.

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.

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.

Arizona Public Service’s parent company received federal grand jury subpoenas for documents related to the 2014 elections at least a month before APS released similar documents to the Arizona Corporation Commission.

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 have no legal right to investigate their colleagues to determine if they are biased, a judge has ruled.