Definition
Technologies that absorb electrical energy from the grid during periods of surplus generation or low prices and inject it back during periods of deficit or high demand — including pumped storage hydro, battery energy storage systems (BESS), compressed air, and flywheels. Grid-connected storage can act as both load and generation, affecting transmission flows, congestion patterns, and resource adequacy. Under the LGIP, storage facilities that inject electricity qualify as Generating Facilities and must follow applicable interconnection procedures.
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Topic Deck
Electrical Engineering Fundamentals
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Source
FERC Pro Forma OATT / LGIP