Gravitricity has successfully commissioned its 250kW energy storage demonstrator, proving the novel technology’s capability. The demonstrator has been built above ground whilst future commercial projects will be built underground, potentially using decommissioned mine shafts. It works by raising one or more heavy weights in the shaft and releasing them when energy demand is up. A series of tests have now been carried out on the grid-connected demonstrator that has been built in the Port of Leigh in Edinburgh. The Scottish company successfully raised and lowered two 25-tonne weights, generating power and verifying the system’s speed of response.
Solar Power Portal 23rd April 2021 read more »