alt Hacker NewsCAISO claims that and cleantechnica might parrot it, but there are blackouts ALL THE TIME in southern california.
In Palm Springs I was down with brownouts 103 times since I bought a sine wave UPS in December, and multi hour blackouts 4 times. My mother in Riverside, brother in Laguna Beach are similar.
Last week it was 3 times here over the course of three days. It's lived experience for me. Reliability collapsed two years ago
And none of those made the national news, which would have happened if the blackout was due to grid generation problems.
Your problem is local grid distribution. Local distribution has lots of single points of failure, unlike the state grid.