Batteries are a bit uneconomical now but may well fall in price like solar has. See for example:

>A startup run by a Tesla veteran and backed by Bill Gates is promising to build a long-duration battery that's 50 to 100 times cheaper than lithium-ion https://www.businessinsider.com/form-energy-battery-startup-...

Europe is already using something like 90% of our hydro electricity potential. So far, countries either: - added renewable energies on top of existing fossil fuel based power generation (gas, coal) - added renewable energies and replaced coal with gas (US for instance)

How is that a solution when it's difficult to build more of it?