Good clarification. Perhaps it would be better then to build these at smaller scales (as they suggest on their website) ;)
In the video this example is chosen to compare it with the area requirements of conventional pumped hydro as well as to show what magnitude of energy storage would be necessary to compensate for fluctuating solar/wind production.
In the video this example is chosen to compare it with the area requirements of conventional pumped hydro as well as to show what magnitude of energy storage would be necessary to compensate for fluctuating solar/wind production.