That's about 90%+ efficiency pumping it up, and generating it down (electrical c... | Hacker News

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		JoeAltmaier on Jan 29, 2020 \| parent \| context \| favorite \| on: Ask HN: What interesting problems are you working ... That's about 90%+ efficiency pumping it up, and generating it down (electrical conversion). So maybe 85% total storage efficiency. How's that compare to battery or other storage systems? Lithium is 98% by some sources.

DoctorOetker on Jan 29, 2020 [–]

the UPHS seems like a durable system that could store and deliver many more cycles than a battery?

JoeAltmaier on Jan 29, 2020 | [–]

Yeah total cost of ownership would tend to even things out.

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