A small Finnish town has turned to the world's largest commercial sand battery to tackle a major hurdle in the energy transition: intermittency.
  • BananaTrifleViolin@piefed.worldEnglish
    3·
    16 hours ago

    It’s a decent size. Only 13m tall and 15m diameter, and it can heat 5,000 homes for a week in winter or a month in summer. Very impressive, and can imagine something that compact working in urban environments too. For example, in the basement of a new apartment block.