Hydro's main problem is that it's just not available in most countries / areas. Solar's main problem is that it's not reliable everywhere. Try setting up solar

Hydro's main problem is that it's just not available in most countries / areas. Solar's main problem is that it's not reliable everywhere. Try setting up solar in Chengdu and you'll find that there's just not enough cloud free days in the year to make it worthwhile. We need baseline power and renewables are not usually enough. If you're lucky enough to have a river or sunny climate then great, but that's not possible in some places.