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To batteries and beyond: Lithium-ion dominates utility storage; could competing chemistries change that?
Utility Dive: Back in 2012 and 2013, when Morten Lund, a partner at the law firm Stoel Rives, first began dropping in at energy storage technology conferences, he came across a wide variety of technologies on display.
At the time, lithium-ion was thought to be too expensive, and so there was a lot of mechanical type-storage — pumped hydro and compressed air, for instance, and one technology based on localized compressed water that involved a vertical drill and deep reservoir. There were a number of technologies, Lund said, like the latter, that today are either gone or have become irrelevant.
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