Limits RegistryPUBLIC RECORD
Limits RegistryPumped-storage hydropower remains the world's dominant form of grid-scale energy storage by total capacity. Fengning stores roughly 40 GWh of energy by pumping water uphill to a reservoir during periods of surplus (often wind and solar) generation and releasing it through turbines during demand peaks, with construction proceeding in phases from 2021 through full commissioning in 2024.
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Pumped-storage hydropower remains the world's dominant form of grid-scale energy storage by total capacity. Fengning stores roughly 40 GWh of energy by pumping water uphill to a reservoir during periods of surplus (often wind and solar) generation and releasing it through turbines during demand peaks, with construction proceeding in phases from 2021 through full commissioning in 2024.
The Fengning Pumped Storage Power Station in Hebei Province, China, reached its full installed capacity of 3,600 MW across 12 units in August 2024, making it the largest pumped-storage hydroelectric power station in the world, surpassing Virginia's Bath County Pumped Storage Station (3,003 MW), the previous record holder.
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Permanent ID limitsregistry.com/limits/LR-FENGNING-PUMPED-STORAGE
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Limits Registry. LR-FENGNING-PUMPED-STORAGE. Fengning Pumped Storage Power Station — largest pumped-storage hydroelectric facility. 2026.