Where I live, it’s a city of over a million, it can regularly get down to -40c, and we only get 7:30 hours of sunlight during the shortest days. The amount of panels and batteries you would need to survive the night is quite a bit more than you’re imagining I think.

The system can't work for everyone, I don’t think the other user was saying everyone needs it, just there will always be a usecase. Colder remote places without lots of sun, that aren’t able to connect to the grid sounds like that usecase.

Obviously if you’re grid connected, heat pumps are the way to go, but ignoring an entire portion of people who it isn’t feasible for is just wild.

Your article also only talks about -10c…. That’s… not that cold dude.