We don't have a/c so we could run all day off the battery most days. It helps that all the lights are low energy now. The situation will vary around the world, but solar could benefit most who can get it. As I said to bozz we are on the latitude of Calgary, but will not get as cold as them.
I see that places like Pakistan are buying a lot of solar panels to get reliable power as their grid is not great. It is the fastest growing source of power just about everywhere and keeps getting cheaper.