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

At every level of government, elected officials represent the voices of the constituents they serve. They should be accountable to no one but the people. Unfortunately for us, monopoly utilities like Arizona Public Service are corroding this most fundamental democratic ...

Claiming he's been defamed, Attorney General Mark Brnovich is suing the backers of the Proposition 127 campaign for telling what he said are lies about him.

If money is speech, the state's largest electric utility is not going to have the only voice this year in trying to affect who gets elected to the Arizona Corporation Commission.

California billionaireTom Steyer has spent more than $18 million so far in his bid to convince Arizonans to support a constitutional mandate that half of all electricity come from renewable sources by 2030.

Supporters of a renewable energy ballot measure have opened up a new front in their bid to get it approved: an expensive attack on Attorney General Mark Brnovich.

Public health advocates urged voters Tuesday to support a renewable energy mandate on the November ballot even though not one of them could say how much of a difference it actually would make in ground-level air pollution.

It ultimately may not matter if Arizonans vote in November to require utilities to generate more of their electricity from renewable sources.

Billionaire Democratic mega-donor Tom Steyer criticized the state’s largest electric company and the biggest competitor of his clean energy ballot initiative Friday for using shady tactics to block a public vote of the renewable energy measure in November.

The state’s largest utility is staying out of the Republican primary race for two open Arizona Corporation Commission seats, risking a shakeup that could have serious ramifications for the company.