An all-renewable grid will mean more electricity and more transmission lines. (Credit: Russ Allison Loar/flickr, CC BY-NC-ND)

The main solution to climate change is well known – stop burning fossil fuels. How to do this is more complicated, but as a scholar who does energy modeling, I and others see the outlines of a post-fossil-fuel future: We make electricity with renewable sources and electrify almost everything.

That means running vehicles and trains on electricity, heating buildings