Thank you for posting an article that gave some important detailed information missing from the original post.
SO often these kinds of things are put up with NO context, such as WHERE.
I had assumed this was off a coast, but it was actually on a river smack in the middle of India. If the river flows, would hydroelectric be the best way to generate power around there? That’s a nice, proven technology that is more or less constant.
Hydroelectric works great. However, it is also pretty expensive to build a dam. It takes years to design, plan and construct. It is proven technology that works every time.
It does stop the upstream migration of some fish species.
It also changes the environment upstream of the dam.
The really interesting and greatly underused is micro hydro electric power generation. Especially for off grid homes & cabins. IF you have even a small stream that runs year round you can generate enough power for most of your needs. Then you add solar panels and you can run your house without hooking up to the grid.
*it was actually on a river smack in the middle of India.*
The real question: Who cares?