Batteries is certainly an option, but we sell power to the utility (PG&E) during the day at a high price per kWh and use it at night (between 2300 and 0700) to

Batteries is certainly an option, but we sell power to the utility (PG&E) during the day at a high price per kWh and use it at night (between 2300 and 0700) to charge our car (and run the washer) at a low price per kWh.