Other PG&E customers here may be interested. Don’t know if this has been posted elsewhere but looks like PG&E has recently started offering a rebate for anyone currently on or willing to switch to a time of use plan. $120 when paired with an Energy Star smart thermostat. https://www.pge.com/pge_global/common/pdfs/save-energy-money/savings-solutions-and-rebates/rebates-by-product/ee_residential_rebate_catalog.pdf
Below is a benefit of having 8KW AC rated PV. Nevermind the prehistoric central AC dinosaur that refuses to die, the downside of a loved one, working out of the house, with menopause ... resulting & feeling hot - even at 70°f, means the thermostat is set more akin to running a meat locker. Let the (loosing) battle of thermostat control continue!! With dynamics like that, TOU, although it works for many, was quite the unsuccessful experiment. The only thing many won't try is where you relinquish to the utility company, the right to run your AC on the hottest days when it's most likely to cause a brown out. Misery loves company. .
Sounds like you need Powerwalls and maybe a brand spankin' new, super efficient central heat pump when the dinosaur goes extinct.