Everything has its downside. For solar I wonder even if it sounds a little bit crazy. But since no light can escape a black hole. Would not a big solar field mimic that effect a little bit.
It could be that there is something as too much solar pv because it begins to look like geo engineering or space engineering.
Still I think we can manage. Thermal energy storage with molten silicon sound promising. With that we could store wind energy and perhaps another big non renewable energy source.