That's true, and it's why other sources of energy are useful still, such as wind and nuclear and hydro. But I also think we'll never get to the point that ever

That's true, and it's why other sources of energy are useful still, such as wind and nuclear and hydro. But I also think we'll never get to the point that everyone has solar installed. There are plenty of situations where it doesn't make sense, such as properties with lots of taller trees around short buildings. Also, generating 120% generally doesn't make sense because the payout from the electric company for the other 20% is pitiful. A battery makes sense for a lot of people for a few reasons, too, so the power company doesn't necessarily have to be the one to do all of that, either. We did it mainly for relief from power outages, but it also works well for places with prices that change by time of day.