Looks like we buy a lot of power from Intermountain Power, who are in Utah: https://www.ipautah.com

Intermountain will be converted from coal to gas: http://www.ladwpnews.com/information-regarding-proposal-to-r...

That is true, but I believe there are more than one coal powered plant in the Intermountain system. My main point is that California will just switch to purchasing power from other areas and claim that they are using all clean energy. I 'm assuming they don't consider natural gas as clean energy.