The parent company of the state’s largest electric utility entered the Arizona Corporation Commission race, funding an outside group to support three Republican candidates for the regulatory body.

The two Democrats running for the Arizona Corporation Commission showed solidarity with a current Republican commissioner over an outstanding investigation into a utility’s role in the 2014 commission election, telling voters electing the bipartisan trio the best way to push the investigation forward.

Arizona Corporation Commissioner Andy Tobin will seek a full term on the commission in this year’s election.

Arizona Public Service will move forward with its proposal to more than quadruple the monthly fee charged to homeowners with solar panels now instead of waiting until next year when regulators will evaluate the company’s entire rate structure.

Lawyers for the Residential Utility Consumer Office and the Arizona Corporation Commission faced off in the Arizona Court of Appeals on June 23 to debate the constitutionality of a mechanism that allows water companies to recoup costs for infrastructure investments outside of a rate case.

Republican candidates for the Arizona Corporation Commission violated the rules by using hundreds of thousands of dollars that were meant to be spent in the primary to go after their Democratic general election opponents, the agency that runs the state’s public finance system agreed today.

The Arizona Legislature is considering HB2789, which significantly increases government regulation by requiring every rule the Arizona Corporation Commission (ACC) makes that affects “public service corporations” (a.k.a. utilities) go before the full House, the Senate and the governor for approval ...

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