Is light and electricity possible through solar power for my shed?

Buy solar lamps with solar panels. Mount the panel outside, the lamp inside, and when we are there and need light, turn it on.

Without storage, it won’t work. Bought off the shelf, if available at all, surely much too expensive. DIY solutions using car batteries would certainly be possible, but do you have time for that? You want to build a house after all ... So either battery-powered LED floodlights or construction power or generator (gasoline). If you want to work there, sooner or later energy will be needed; you can’t accomplish much by hand alone when it comes to building.

Why not have the power box installed now and buy a construction power box on eBay? Then the tip with the cable drum also works. You need all that anyway.