A core infrastructure problem at the whim of shareholders instead of citizens, it's not hard to see why their goals don't align with their purpose.
The state should either come down hard with regulations mandating minimum power delivery and safety that takes these new issues into consideration. Or they should be made a public company.
If they can't afford to run the grid infrastructure given new requirements then it's obvious a private company is not a safe caretaker of the states key infrastructure and the state will need to take up the costs so that California can remain a first world state. That's why you all pay taxes, to provide services not make profit.