Know 2 people who are totally dependent on the electric grid for heat and they both have a battery bank that’s recharged by solar with a generator on the days the sun ain’t shining
Then a propane heater you can move from room to room as backup/ supplemental heat so you can shut down most of the house when not needed
Then a propane heater you can move from room to room as backup/ supplemental heat so you can shut down most of the house when not needed