Hydro power runs only where there is enough water moving. Wind power runs only when there is enough wind. Solar power runs only when it's sunny enough, and neve

Hydro power runs only where there is enough water moving. Wind power runs only when there is enough wind. Solar power runs only when it's sunny enough, and never at night. Batteries are not nearly good enough to smooth this out. So ... all these things are great, but not enough to replace fossils practically at current tech.