- Jan 2022
The Gravitricity system uses weight configurations totalling up to 12,000 tonnes in a deep shaft, suspended by a number of cables, each of which is engaged with an electric winch capable of lifting its share of the weight. Electricity is stored in the form of potential energy by raising the weights. Power is then generated by lowering the weights to turn a generator. The technology has been proven to reach full power in less than one second and has a predicted full scale efficiency of between 80% and 90%.
[[Gravitricity]] is an interesting Scottish energy company of new age. Their idea is using gravity to store energy in a physical from as opposed to lithium-ion batteries which do so chemically. Their gravity storage, unlike pumped hydroelectric energy storage, does not rely on water which makes it more accessible to more arid countries.