>I think everyone is aware that storing excess energy surplus from renewables is an unsolved problem It's not everywhere a problem, a really old solution is:

>I think everyone is aware that storing excess energy surplus from renewables is an unsolved problem It's not everywhere a problem, a really old solution is: https://www.iflscience.com/giant-water-battery-in-the-swiss-alps-is-finally-operational-66878 https://www.iflscience.com/giant-water-battery-in-the-swiss-... And if you don't have much water that could be a solution: https://en.wikipedia.org/wiki/Gravity_battery https://en.wikipedia.org/wiki/Gravity_battery