For one reason, you'd be forcing a billion people in Africa to live in dire poverty like their ancestors.

For another reason, renewable cannot supply backbone power for grids.

Final reason, you'd be banning nuclear, which is the future of power.

https://www.forbes.com/sites/michaelshellenberger/2018/09/11/had-they-bet-on-nuclear-not-renewables-germany-california-would-already-have-100-clean-power/#16dc7e0e0d44