You can DIY store 10kWh+ of solar in your water heater: https://www.pvh2o.com/ https://www.pvh2o.com/ When I plug data for LA into the simulator I get a payba

You can DIY store 10kWh+ of solar in your water heater: https://www.pvh2o.com/ https://www.pvh2o.com/ When I plug data for LA into the simulator I get a payback of 1.4 years.