Renewables and distributed resources can help the U.S. significantly reduce greenhouse gas emissions by mid-century. But a big debate remains over the role of nuclear power in that transition, especially without the Clean Power Plan.

Hawaii intends to get to 100% renewables by 2045 without nuclear power. California, New York, and other states have targeted 50% renewables by 2050, with or without it. And a 100% renewables power mix without nuclear is possible for nearly every nation by 2050, according to the the Stanford professor Mark Jacobson and Solutions Project.

— Utility Dive