To complete here are two examples in US of existing hydroelectric that had pumped systems added in latter date (decades after operation start) becoming the so-c

To complete here are two examples in US of existing hydroelectric that had pumped systems added in latter date (decades after operation start) becoming the so-called open-loop system I referred: [1]Richard B. Russell: https://en.wikipedia.org/wiki/Richard_B._Russell_Dam https://en.wikipedia.org/wiki/Richard_B._Russell_Dam [2]Grand Coulee: https://en.wikipedia.org/wiki/Grand_Coulee_Dam https://en.wikipedia.org/wiki/Grand_Coulee_Dam So before saying something is "flat out wrong" be sure you are not ignorant on the subject.