Emeritus Prof Christopher MayA reminder that energy storage doesn't have to be dependent on batteries.
The Welsh 'Electric Mountain' facility is a pumped-storage mechanism utilising the force of gravity to store energy.
When electricity is cheap you pump it up the hill, when surge use is required, you let it flow back down through the turbines.
Expensive infrastructure to set up, but cheap to run, with a long working life. The beauty of civil engineering exemplified!
All GNU social JP content and data are available under the