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In my recent article celebrating the great month that pumped hydro had, between the Loch Ness Red John facility selling to Statkraft, the UK finally settling on cap and floor for the technology and China having 365 GW of power and four to eight TWh of energy storage under construction, I included a throw away line.
As a reminder, pumped hydro is the gravity storage solution that actually works, unlike concrete blocks, elevators and hillside rail systems.
This triggered all of the people who think Energy Vault has a remotely sensible technology and the tiniest chance of delivering anything of value, the people who like the ARES rail-based gravity storage nonsense and probably the ones who think unused office elevators, water towers, and mines and big piles of sand are a massive source of…
Read the full article originally published at cleantechnica.com.