I hate PG&E too - who doesn't? But that doesn't mean I should burn a ton of money just to somehow try and get even with them. They only get away with what they are doing because of the CPUC and state government allowing them to do it. You can't really criticize a company for acting in it's own best interest I suppose.
We have a lot of energy use because its a large house, and I have 24KW of solar array, and actually generate quite a bit of energy during the day. I know I can't sell everything back in the peak hours, but was looking to see what the sort of best case was. I have to look at how much peak energy we use and see if that changes the economics just by avoiding that expense, but it looks pretty doubtful.
I don't think depending on PW's for backup use is nearly as good as a generator. If there is a nasty storm that takes out power, you may not be able to charge. And if you end up with an extended power outage, that is hard to deal with too. Generators really do a better job for backup, and you can get transfer switches of all sizes, so you don't have to break up panels into blocks of backed up and non backed up circuits.
But I confess I was surprised at how bad the economics are just on the load shifting piece. We have lots of people in my community lobbying the city to force everyone off gas appliances, and that solar and batteries will make our city's power use all green. But the economics of storage look like it will be a very long time before any of that actually makes sense.