I hesitate on rooftop solar because what happens in Cali will happen everywhere as utility install more solar at lower cost than rooftop.As we add more solar and move to electric heating and electric cars the capacity of the grid will be challenged during the night and winter when solar output is low or non existent. PG&E has already started changing their time of use rate structure because of the addition of solar to their system. My cost for electricity went up about about $1,200 last year in part because of the change from EV-A to EV-2. It greatly reduced the amount PG&E paid me for my solar output during the summer. I expect this to continue to erode the value of solar panels. In addition my off peak cost to charge the car has gone from 10 cents to 18.4 cents in 6.5 years. Their E-1 rate has also gone up about the same. It's now almost 26 cents per kwh.
Fortunately, home battery costs are dropping and V2G may be standard after 2025. VW is adding V2G in 2022.