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A comment on Electricity stored as temperature difference. Parent comment

Re:Electricity stored as temperature difference by al_bundling on Saturday November 22, 2014 @07:07AM (#8645386)
Isentropic PHES Technology Explained https://youtube.com/watch?v=sIxt6nMf-IQ
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Re:Electricity stored as temperature difference by exch on Saturday November 22, 2014 @07:36AM (#8645425)
Thank you! It seems my confusion arose from assuming this is a power generator, while it is a storage device.
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