Pumped Hydro Energy Storage (PHES)

Pumped Hydro Energy Storage uses the gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation reservoir. This stored water is then released through turbines to produce electric energy.

Sketch of a Pumped Hydro Energy Storage unit (Alberto Benato, Anna Stoppato, 2018).

frequency containment reserve (primary control), frequency restoration reserve (secondary control), replacement reserve (tertiary control), black start, energy arbitrage, load levelling, peak shaving, renewable energy integration

parameter value unit
energy capacity 4.5 - 216000 MWh
power capacity 1 - 500 MW
round-trip efficiency 65 - 87 %
discharge time seconds - months -
response time seconds - minutes -
gravimetric power density No data - No data W/kg
volumetric power density No data - No data kW/m^3
gravimetric energy density No data - No data Wh/kg
volumetric energy density No data - No data kWh/m^3
calendar lifetime 40 - 96 years
cycle lifetime 10000 - 30000 cycles
parameter value unit
capital cost energy-specific No data - No data CHF/kWh
capital cost power-specific No data - No data CHF/kW
capital cost of energy based components 1 - 1448 CHF/kWh
capital cost of power based components 1033 - 3693 CHF/kW
LCOES calculation tool
No inventory data available for this technology