24kW solar "to keep lights on" is a funny way to underplay it. My house "summer" electricity usage is 60kWh per month, including water pump, DHW, septic and work from home for 2 adults. So 3h of your PV production would power my house for a month!

Regarding heating - I live in cold climate. We had average daily temperature of -10c this january, with multiple lows at -25c, and most nights at -15c. The house is 116sqm. Our heatpump COP for that month was above 2, and we used 787kWh total to heat the house, which is not a lot, actually. At 15 cents per kWh it is 118 euros for heating, for the coldest month in a decade! Considering also that we do not pay for electricity since april until october (solar panels).

We also paid less than those houses which use natural gas, wood pellets, etc. We also do not need to do anything to keep house warm. Also, during summer months we could "drive for free" in EV due to free solar electricity.

All that just to counter your take on "major quality of life and activity time shifting trade-offs".