Role of Pumped Hydro Storage in Peak Demand Management
- Off-Peak Energy Storage: PHS facilities store energy by pumping water from a lower reservoir to an upper reservoir during off-peak hours when electricity demand is low and power is cheaper. This is typically done using excess energy from base load power plants or renewable sources.
- Peak Demand Fulfillment: During peak hours or when renewable energy sources are not generating sufficient power, water is released from the upper reservoir back down through a turbine, generating electricity. This helps meet the increased demand for electricity during peak periods.
- Grid Stability and Peak Shaving: By releasing stored energy during peak periods, PHS helps reduce the strain on the grid, thus preventing blackouts and stabilizing the grid. It also reduces the reliance on more expensive peaking power plants, which in turn can lower peak energy prices.
- Renewable Energy Integration: PHS can support the integration of renewable energy sources by storing excess energy generated during periods of high production, allowing it to be released when needed. This helps balance the variability of solar and wind power.
Overall, pumped hydro storage is a key strategy in managing peak electricity demand efficiently while supporting the integration of renewable energy sources into the grid.
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