Post

Jan Rosenow@janrosenow.bsky.social

Pornainen, Finland (pop 5,000) is now heated by a silo of crushed soapstone. I spoke to CNBC about it. 100 MWh, charged when power is cheap, emissions down ~70%. Days to weeks of storage, no critical minerals. www.cnbc.com/2026/07/25/f...

cnbc.comFinland’s radical answer to renewable energy’s biggest headache: The world’s largest sand batteryA small Finnish town has turned to the world's largest commercial sand battery to tackle a major hurdle in the energy transition: intermittency.