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A comment on Large-scale ‘sand battery’ goes online in Finland. Parent comment

Re:Large-scale ‘sand battery’ goes online in Finland by duxup on Wednesday July 06, 2022 @11:19PM (#32009571)
University of Minnesota still has it and has been upgrading it:

https://cpm.umn.edu/combined-heat-power-plant

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Re:Large-scale ‘sand battery’ goes online in Finland by instaclay on Thursday July 07, 2022 @11:03AM (#32014995)
St. Paul also: https://www.ever-greenenergy.com/project/district-energy-st-...
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