Interesting (and encouraging) article:

PacifiCorp Proposes Replacing Wyoming Coal Plants With Renewables and Storage

For the first time, the Berkshire Hathaway-owned utility has outlined a plan that could save customers money by retiring coal plants early. But it faces a challenge in Wyomings new coal protection law.

This is how the greening of America happens: When new technologies make fossil fuel use uneconomical, change away from fossil fuel is inevitable. Big coal and big oil will fight it, but money is money after all. If businesses can make more by going green, that can't be stopped.