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How do BESS and PSP work?

BESS stores excess electricity, mostly produced from intermittent renewables such as solar and wind, and supplies it to the grid when production is low. It can also help stabilize the grid by absorbing excess electricity when production rises and supplying power when production drops. PSPs store electricity by pumping water into an overhead reservoir during periods of excess generation. Accumulated water is released through turbines when demand for electricity rises. While BESS can respond quickly to short-term demands, supporting frequency regulation, peak management and grid balancing, PSPs provide long-term storage by moving large amounts of electricity through periods of surplus and demand.