22 votes

Finnish startup Polar Night Energy has announced its industrial-scale sand battery, the world's largest of its kind, is now operational

Posted by mycketforvirrad
Tags: energy.renewable, finland.pornainen, infrastructure, technology, storage.thermal, batteries.sand, soapstone, heating.district, emissions.carbon, business, startups, polar night energy, loviisan lampo, ceo, mikko paajanen, author.patrick jowett, source.pv magazine, short read
https://www.pv-magazine.com/2025/06/11/worlds-largest-1-mw-100-mwh-sand-battery-commissioned-in-finland/

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Title
World's largest 1 MW/100 MWh sand battery commissioned in Finland
Authors
Patrick Jowett
Published
Jun 11 2025
Word count
384 words

2 comments

  1. tauon
    Link
    Cool stuff! A friend recently told me about Energy Vault, which is also concerned with non-“traditional” (chemical, e.g. lithium-ion) energy storage. I think technologies like these are especially...

    Cool stuff! A friend recently told me about Energy Vault, which is also concerned with non-“traditional” (chemical, e.g. lithium-ion) energy storage. I think technologies like these are especially promising for providing both cross-seasonal storage (lower-medium wattages over longer duration) or bridging high-demand gaps/spikes (on the scale of a large city/small country, for a short amount of time), at least once we’re able to scale them to be built really often.

    3 votes
  2. PuddleOfKittens
    Link
    Other similar companies worth keeping an eye on here are Rondo Energy, Fourth Power, Antora. I think there's a second graphite-pipes company too, who uses nitrogen instead of argon and was...

    Other similar companies worth keeping an eye on here are Rondo Energy, Fourth Power, Antora. I think there's a second graphite-pipes company too, who uses nitrogen instead of argon and was targeting 2400°C.

    2 votes