From the cost benefit side of solar, California's new policy will kill home solar. We had whole house solar in a large home in NW Washington. With full net metering, going solar was only marginally profitable. The payoff came at 15 to 20 years, allowing about 10 to 15 years before the solar panels needed replacing. When the panels need replacing, no doubt some of the power interface will have to be replaced also, winding the clock for effectively paying for solar power for another 10 to 15 years. Reduce the benefit by 80% and there is no economic benefit to home solar. Throw in the cost of batteries and the room set aside for them, and the shorter life of batteries, there isn't going to be much incentive in trading a utility bill for a solar panel/battery payment.
Where I moved to, the electricity is provided by a county PUD at about 60% cost per KWH of the previous home, so the decision is to not go solar.