Also, if you are an existing Solar user grandfathered into NEM 1.0, you cannot increase your PV system size by more than 10% or you loose NEM 1.0 and get the much less favorable NEM 2.0. This is a real issue for people wanting to expand after getting an EV.... and PV can be so cheap.
Rather simply, if the rate during sunshine hours is half the 4pm - 9pm rate, you only need to generate twice your peak rate consumption.
Since PV amortizes out to under 5 cents a kWh for most people the peak rate hours can work out to as cheap as 10 cents a kWh. The only real gotcha is if the utility limits your PV array size to match annual consumption.
Adding a Powerwall or two is another option. We can now easily cover 100% of the house's usage from 4-9pm and send all solar energy produced during that time to the grid for maximum credit.