There's absolutely no way that California avoids more blackouts this decade. Demand for electricity continues to grow as the population increases, more homes are being built, and the economy kicks into high gear again.
It took the Perfect Storm of bad legislation, high natural gas prices, Enron, and a drought in the Pacific Northwest to create the last crisis. It won't require that much the next time. Demand is up several thousand megawatts since the last crisis, and new plants haven't been built to match it.
There's a drought in the Pacific Northwest again this year.