I guess at some level it is a matter of incentives. In their city, we have electricity 20-22 hours per day (used to be 12-18 when i was growing up) and we can’t rely on the state to provide us electricity consistently.

But also, due to infrastructure. Everyone who could afford it has had a battery and inverter in our homes since forever. Hooking up some solar panels to it is relatively straightforward.

I think there are also some state sponsored subsidies involved although I couldn’t tell you how much.