3 ms·

What is PES? I only can get results for Power & Energy Society, which seems tangentially but not meaningfully related

• croddin 6y ago
  I think it means Pumped Energy Storage
  • nawgz 6y ago
    I was wondering if he was suggesting we roll trains up hills with excess power and use regenerative braking or something like this, I hope he will respond
    • jlmorton 6y ago
      No need for a hill! You can dig a deep hole, and fill it with concrete weights.