If I understand you correctly you're suggesting treating the ocean like an elevated lake, and putting a pipe to a lower place so the water pressure could genera

If I understand you correctly you're suggesting treating the ocean like an elevated lake, and putting a pipe to a lower place so the water pressure could generate electricity. The two things that come to mind for me are: 1. It's hard to find land lower than the ocean (https://en.wikipedia.org/wiki/List_of_places_on_land_with_elevations_below_sea_level https://en.wikipedia.org/wiki/List_of_places_on_land_with_el...) 2. Piping salty ocean water inland will make a lot of people unhappy. It would totally change the environment that was already there. But interesting idea. Death Valley might be a valid place for it, since it's already a salty waste land.