Not all electric heating technologies need the grid. You can DIY a 2kW solar system and store 10kWh of heat in your water heater. No grid connection required.

Not all electric heating technologies need the grid. You can DIY a 2kW solar system and store 10kWh of heat in your water heater. No grid connection required. https://www.pvh2o.com/faq https://www.pvh2o.com/faq