I am really curious about tidal energy projects, since in principle the cost for the wall is linearly proportional to the circumference, but the energy stored i

I am really curious about tidal energy projects, since in principle the cost for the wall is linearly proportional to the circumference, but the energy stored is proportional to the area, hence quadratic in price. Roughly speaking a project 10 times as expensive would store and generate 100 times as much energy... Unlike solar and wind, the tides are very predictable and 2 cycles per day are guaranteed. The constant false dilemma between nuclear and coal is poisoning the discussions and blinding us from investing in alternatives... Did the Japanese project for tidal energy get scrapped? Wikipedia is mute about the current status at [1] and doesn't list the Japanese tidal energy project as under construction at [2] either... [1] https://en.wikipedia.org/wiki/Energy_in_Japan#Ocean_energy https://en.wikipedia.org/wiki/Energy_in_Japan#Ocean_energy [2] https://en.wikipedia.org/wiki/List_of_tidal_power_stations https://en.wikipedia.org/wiki/List_of_tidal_power_stations