If you look at CED high demand, CA today already has almost 10% excess of the projected 2026 peak demand (projected is between 65-70, lets say 69MW, per the LA times capacity is 75MW). High demand makes it's own set of assumptions about the efficacy of self generation and economic growth, and I'd be interested to see if they redid this in 2016 (based off how much they overestimated in 2014 and lowered their expectations in 2015).

I did not fully digest this document but based off a brief skim I don't think this document disagrees strongly with the LA times article. Clearly there are more plants coming online, but that today we have 10% excess of the high end of a 10yr projected forecast, I think is part of the articles point (although I think the main point of the article is about how regulated utilities are benefiting from this, at the cost of consumers and non-regulated utilities).