Solar power disadvantages are actually not so plentiful. That disadvantage is that the sun doesn’t shine 24 hours a day. , we couldn’t be 100% powered by solar panels. Firstly, the sun actually does shine when we need electricity most. . Society more or less wakes up when the sun rises. solar power could theoretically supply the world with all of its electricity needs. So, those are the solar power advantages and disadvantages that I think are most notable.