Appending to my comment: actual experts say the potential isn't 20 GW but 200 GW. I don't know where I made my error. https://www.bloomberg.com/news/features/2

Appending to my comment: actual experts say the potential isn't 20 GW but 200 GW. I don't know where I made my error. https://www.bloomberg.com/news/features/2022-05-30/japan-s-deep-ocean-turbine-trial-offers-hope-of-phasing-out-fossil-fuels https://www.bloomberg.com/news/features/2022-05-30/japan-s-d... - "Japan’s New Energy and Industrial Technology Development Organization (NEDO) estimates the Kuroshio Current could potentially generate as much as 200 gigawatts"