excess is made during the day, stored for night in batteries, even with clouds, excess is possible. the panels get more efficient every day. as do battery systems, and electronics in general. obviously wouldnt work great at the bottom of the sea or in a cave a thousand miles below the surface. but solar has its place, and should be utilised when necessary, where it works best or at least can reduce costs and environmental impact over a period of time.

nothing wrong with that.