Solar and batteries are a bad choice for a constant 24/7 load.

That's the exact reason we will never go fully solar (or wind) unless an insanely impressive battery breakthrough makes storage effectively free while using only common, renewable components rather than rare earths.

Solar, wind, etc are excellent parts of an energy system, but its nearly impossible to cover base load at scale with generation that may only run for 0-5 hours a day.

edit: typo