Pumped Storage Project
Pumped Storage Projects (PSPs) are among the most mature, reliable, and large-scale energy storage solutions available today. By storing energy in the form of water at elevated levels, pumped storage plays a critical role in balancing electricity supply and demand, ensuring grid stability, and enabling higher integration of renewable energy sources.
A pumped storage system operates using two reservoirs located at different elevations. During periods of surplus electricity—such as off-peak hours or times of high renewable generation—water is pumped from the lower reservoir to the upper reservoir. When demand rises, the stored water is released back to the lower reservoir through turbines, generating clean, dispatchable power.
10+ GW PSP
Portfolio in Development
Key Advantages of Pumped Storage Projects
Grid Reliability & Stability
Provides fast response for peak demand support, frequency regulation, and grid balancing, contributing to overall system reliability.
Renewable Energy Integration
Enables storage of surplus solar and wind generation, helps reduce renewable curtailment, and supports higher renewable penetration in the power mix.
Long Life & Proven Technology
Pumped storage is a well-established technology, with many plants operating for several decades and designed for long service life with proper maintenance.
Large-Scale Energy Storage
Supports bulk energy storage and delivery over multi-hour durations, and in suitable configurations can support extended discharge cycles.
Environmentally Responsible Operation
Uses water as the storage medium and produces no direct combustion emissions during operation, supporting clean energy transition objectives.
