Hydro is always going to be superior to pretty much anything out there. The problem with hydro is that we already tapped every possible source for both generation and storage. It's done.
You can put a Tesla station anywhere in whatever size you need.
At the current rate of tech change, which has been sustained for decades, within a couple decades hydro will be more expensive than battery technology. And that's even with the vastly improved scalability, responsiveness, and sitability characteristics of batteries!
We need to build these industries, as they are our future. And if we're not building them, we'll just be buying from somebody else.
You can put a Tesla station anywhere in whatever size you need.