My two Tesla Powerwall 2‘s were installed last week and now I’m running on my own self-generated solar power – after dark! Powerwalls not only don’t need any maintenance or fuel (unlike any fuel-burning generator), but they also let you time shift energy to avoid using power from the grid at peak demand times. Of course this also means that now I will still have power (and, more importantly, running water!) the next time PG&E needs to shut down the power grid. Yay!
I really like the Tesla app for configuring and monitoring your Powerwall and, if present, your solar PV system. It continually displays the flow of power between your home, Powerwalls, solar panels and the power grid in real time.