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Huesca, Spain See on Google Maps
A reversible hydro plant with a capacity of 88.85 megawatts (MW) located in the heart of the Pyrenees in Aragon.

A hydro plant with a capacity of 88.85 megawatts (MW) in the form of a reversible pumping station with three sets consisting of an alternator, a turbine and a pump. It can supply clean energy to more than 16,000 homes. It has two reservoirs to complete the pump-turbine circuit. The higher reservoir is a lake (the Lake of Ip) whose level has been raised through infilling with loose materials to a maximum height above foundations of 28m, a crown length of 235m and a spillway capacity of 87 m3/s. It has a capacity of 5.3 hm3 (Lake of Ip). The lower reservoir (the Canfranc counter-reservoir) has a capacity of 0.43 hm3. It has a 32.2-meter-high buttressed-wall dam located on the river Aragon.

 

GENERAL INFORMATION

  • Location: Canfranc Estación. Huesca. Spain.
  • Capacity: 88.85MW (turbined), 99 MW (pumping).
  • River basin: Aragón.
  • Type: Pumping station.
  • Start-up: 1969.
  • Flow through the turbine: 9.9 m3/s.
  • Type of turbine: Vertical Pelton (3).
  • Pump: Four stage (3).
  • Net water fall: 935 m.
  • Owner: ACCIONA.

KEY POINTS

  • The plant pumps water up to the upper reservoir when there is a surplus of energy, storing it to generate power when needed. This helps to achieve a higher integration of renewable energies into the system.
  • A fall of almost 1,000 meters, the biggest in Europe when it was opened.
  • The upper reservoir has a high-mountain dam (2,119 meters above sea level).
  • The power station building was designed by the architect Miguel Fisac.
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