4 ms·

Invest in batteries

• timbit42 6y ago
  I wish someone would figure out a better flywheel.
  • pfdietz 6y ago
    Limited by strength of materials.
    • worik 6y ago
      Interesting. Have you a reference? I had a friend working on industrial UPS systems that used large flywheels. Was years ago so I do not know the details. I think they could supply a lot of energy quickly (no start up time) but maybe not for long?
      • pfdietz 6y ago
        https://en.wikipedia.org/wiki/Flywheel#High-energy_materials https://en.wikipedia.org/wiki/Flywheel#High-energy_materials https://en.wikipedia.org/wiki/Virial_theorem https://en.wikipedia.org/wiki/Virial_theorem
• pfdietz 6y ago
  Or other storage technologies. In particular, thermal storage with heat pumps appears very promising, allowing energy to be stored in extremely cheap material (rocks), and turned back around to electrical energy with a round trip efficiency ~60%. https://www.frontiersin.org/articles/10.3389/fenrg.2020.00160/full https://www.frontiersin.org/articles/10.3389/fenrg.2020.0016...