I think I can answer that, though I'm not a Pakistani but as a Nigerian in a developing country, you might also have a petrol generator for night times. But for the majority of people just having your phone and power bank charged for the night is pretty ok, a plus if you can keep a handful of bulbs on also.

At night, what people will do is wait until the morning to run the washing machine.

overprovision for their needs during the day and utilize battery power at night.

Shift usage to daytime and rely on battery storage.