Pumped hydro storage (PHS) systems can respond extremely quickly to changes in electricity demand, making them crucial for maintaining grid stability. Here are some key response times:
- From standstill to full power generation: PHS systems can start producing electricity from a standstill to full production capacity in less than two minutes. This includes ramping up from 50% to full production in about 15 seconds.
- Switching from idle to full load: Modern pump-turbine technologies allow for quicker responses, with some units able to switch from idle to full load in less than 70 seconds.
- General response to load changes: PHS plants can generally respond to load changes within seconds, which is essential for stabilizing electrical network frequency and providing reserve generation.
These fast response times are critical for balancing the grid, especially with the increasing use of intermittent renewable energy sources like solar and wind power.
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