3 ms·

Are physical potential energy storage systems completely impractical? Flywheels, compressed air, gravity storage?

• afarrell 11y ago
  Of those, I believe only gravity storage (at facilities like Blenheim-Gilboa) are currently in use.
  • jerven 11y ago
    Flywheels are as well. But at a much smaller scale than gravity storage.
    • afarrell 11y ago
      Oh I wasn't aware. Link?
      • jerven 11y ago
        http://beaconpower.com/operating-plants/ http://beaconpower.com/operating-plants/ but there are others, some even quite old. More often selected for niche reasons than market peak load balancing. e.g. site one at long end line of insufficient frequency stability.