https://en.m.wikipedia.org/wiki/Pumped-storage_hydroelectricity https://en.m.wikipedia.org/wiki/Pumped-storage_hydroelectric... I believe this number only incl

https://en.m.wikipedia.org/wiki/Pumped-storage_hydroelectricity https://en.m.wikipedia.org/wiki/Pumped-storage_hydroelectric... I believe this number only includes dams with reverse pumping. The global production capacity for all hydroelectric power is much larger, but it's not a widely used number, since you typically don't empty a reservoir due to the lower water having less potential energy. So this capacity number is a bit theoretical, since you wouldn't use it that way in practice. But then again, so is the capacity number for batteries, since you really want to avoid doing a full discharge. Annual global hydroelectric production is a more useful number, and is a little more than 4 000 TWh.