Finding green energy when the winds are calm and the skies are cloudy has been a challenge. Storing it in giant concrete blocks could be the answer.

The concrete blocks are slowly hoisted upwards by motors powered with electricity from the Swiss power grid. As each block descends, the motors that lift the blocks start spinning in reverse, generating electricity that courses through the thick cables running down the side of the crane and onto the power grid. In the 30 seconds during which the blocks are descending, each one generates about one megawatt of electricity: enough to power roughly 1,000 homes.

  • Helix 🧬@feddit.de
    2·
    3 years ago

    Every crane need a lot of dead weight for a stable position, don’t see problems where are no exists.

    Yes, but why build a crane when you can also build a water reservoir?

    • Zerush@lemmy.ml
      1·
      3 years ago

      What will you do in a desert zone? It’s the best for solar energy but not for water