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.

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.