I think the bigger point is that most places have built enough hydro infrastructure that any new hydro is neither cheap nor has a low impact on environment. The age of cheap and easy hydro is kinda gone.
Now we can still have partial upgrades and rebuilds to increase hydro capacity. Sadly, very few places are feasible with modern tech that weren’t possible ~30-50 years ago
I think the bigger point is that most places have built enough hydro infrastructure that any new hydro is neither cheap nor has a low impact on environment. The age of cheap and easy hydro is kinda gone.
Now we can still have partial upgrades and rebuilds to increase hydro capacity. Sadly, very few places are feasible with modern tech that weren’t possible ~30-50 years ago