A $31 million campaign by the state's electric utilities proved enough to keep voters from adopting a constitutional mandate that they generate at least half of their power from renewable sources by 2030.

The Distributed Energy Resource Alliance (DERA), composed of solar industry companies, professionals and educators, urges Arizonans to vote no on Proposition 127.

The state's largest electric company has now poured more than $30 million into its bid to convince Arizonans not to force it and other utilities to use more renewable resources.

Yes, sunny Arizona is an ideal state for solar power. As it gets cheaper, the state should use solar whenever it makes financial sense. But politicians shouldn’t force you to buy it regardless of cost. It doesn’t make sense to insert into the state Constitution a requirement on energy use that locks Arizona into 50 percent wind and solar. Betting the state’s financial future and job base on wind and solar power is a huge risk to Arizona’s economic health.

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.

Attorney General Mark Brnovich found himself defending the decisions he made to challenge various federal laws, challenges that his Democrat foe said Wednesday worked against the interests of average Arizonans.

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.

Democrat Sandra Kennedy said Thursday there would be no need for voters to impose a renewable energy mandate if state utility regulators would do their job.

A key aide to Attorney General Mark Brnovich altered language of the ballot description of Proposition 127 that the state's top elections officer called "eyebrow raising'' and the lawyer for initiative organizers said is designed to help Arizona Public Service convince voters to reject it.