Amount of solar energy hitting the Earth is colossal so using it in theory makes more than sense but
in reality things are not that great. I do not understand details about electricity transportation but according to one komentator, having massive solar plant in Sahara and transporting el. to Europe would not be that “easy” because of distance and losses it occurs and other issues. This explanation was in comment section on the youtube video on implication and impact if we covered part of Sahara in solar panels.I belive it is this video https://www.youtube.com/watch?v=62ASvupr8Zg&t=599s.
What seemed to me common sense turned out to be not that smart as I thought?, Our eco system is so complex that ordinary people have no idea what is good or counterproductive