Gravitricity is turning old mine shafts into power generators using giant weights

The coal mining industry is dying (despite what some people would have you think) and it isn't coming back. But a new startup is breathing life into mining communities with an ingenious design that uses old mine shafts to generate energy. Gravitricity wants to create a giant weight that will drop down into disused mine shafts to create power. Here's how it works: "Our patented technology is based on a simple principle: raising and lowering a heavy weight to store energy." It's sort of the...

from Inhabitat - Green Design, Innovation, Architecture, Green Building https://inhabitat.com/startup-is-turning-old-mine-shafts-into-power-generators-using-giant-weights
via Inhabitat