Arizona's largest electric utility says it plans to switch to 100% carbon-neutral power generation by 2050.
Wednesday's announcement by Arizona Public Service marks a sharp turnaround by a company that spent $38 million two years ago to fight a ballot proposal that required utilities to get half their power from renewable sources by 2030.
The utility's chairman and CEO says the plan he's backing is different than the defeated ballot measure because it's flexible.
The company will close a major New Mexico coal-fired power plant seven years early but keep relying on the nation's largest nuclear power plant as it turns to renewable energy.
