The question of whether voters get to decide on a new renewable energy mandate for utilities could turn, in part, on how many petition signatures a judge lets Arizona Public Service challenge.

Pushing ahead where utility regulators so far will not, advocates of more renewable energy filed more than 480,000 signatures Thursday to put the question on the November ballot.

Arizona’s most significant public corruption case since the 1988 impeachment of Gov. Evan Mecham has come down to this: Four defendants. Fourteen days of testimony. Nearly four dozen witnesses.

With a renewable energy initiative ready to be filed next week, a state utility regulator is filing his own proposal, one that electric companies are likely to find more attractive.

The Palo Verde Nuclear Generating Station is the nation’s largest power producer, and if the Clean Energy for a Healthy Arizona initiative appears on the ballot in November, voters will decide the plant’s future.

Hoping to incite a blue wave in Arizona, billionaire mega-donor Tom Steyer will pour at least $2 million into state elections this year.

Afraid that voters might like a renewable energy mandate, the state's largest utility is working with lawmakers to put its own alternative on the November ballot.

Ignoring last-minute requests for a veto, Gov. Doug Ducey signed legislation Friday to protect utilities from having to generate more of the power sold to their Arizona customers from renewable sources.

State senators voted Wednesday to give utilities a way to avoid having to get half their electricity from renewable sources by 2030 even if voters mandate that they do so.

As scandal erupted in the Republican special primary election in Arizona's 8th Congressional District, a Senate staffer was revealed to have exchanged suggestive text messages with former state Sen. Steve Montenegro.