There are strong currents at work in the strait of Gibraltar. Would be interesting to harness their energy in some way.
Japan is apparently going to give it a shot: https://www.inputmag.com/tech/japan-kairyu-ocean-turbine-dee...
Looks like Scotland’s is a roaring success: https://www.bbc.com/news/uk-scotland-north-east-orkney-shetl...
No need to evaporate the sea.