Abstract
Energy systems are rapidly and permanently changing and with increased low carbon generation there is an expanding need for dynamic, long-life energy storage to ensure stable supply. Gravity energy storage systems, using weights lifted and lowered by electric winches to store energy, have great potential to deliver valuable energy storage services to enable this transformation. The technology has inherently long life with no cyclic degradation of performance making it suitable to support grids into the future and has be shown to be able to provide subsecond, full power response. This technology is currently at an early stage of development, but Gravitricity Ltd. have demonstrated the performance at a 250kW scale and are progressing toward full-scale systems.
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