A similar project has been on construction in Europe
https://de.m.wikipedia.org/wiki/Nant_de_Drance
Cost of $2B. I had the chance to visit the caverne where the turbines will be, really amazing engineering!
Pump storages are already all over Europe for decades. The most famous one being Kaprun/Austria, built by the Nazis in the 30ies. They are all over the Alps, as the green party lets them.
Those pump storages provide the very expensive peek electricity all over Europe, needed for the spikes in the morning and noon.
Nevada probably didn't need it back then, Hoover Dam was built for flood protection, and since then the levels are too low to work efficiently as pump storage. But since peek energy is in high demand they think it over.
Those pump storages provide the very expensive peek electricity all over Europe, needed for the spikes in the morning and noon.
Nevada probably didn't need it back then, Hoover Dam was built for flood protection, and since then the levels are too low to work efficiently as pump storage. But since peek energy is in high demand they think it over.