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Pumped hydro

Pumped-storage hydroelectricity (PSH) is a type of hydroelectric power generation that stores energy in the form of potential energy of water, pumped from a lower elevation reservoir to a higher elevation. Low-cost off-peak electric power is used to run the pumps, and ther stored energy can be used for load balancing.

During peak periods of electricty demand, the stored water is released through turbines to produce hydroelectricity. Turlough Hill (292 MW), operated by the ESB, is currently Ireland’s only pumped-storage hydroelectricity plant. However, this is likely to change shortly and ECOFACT have worked on a number of these schemes currently being progressed in Ireland.

fisheries survey pumped storage eel
  • We have developed a reputation for excellence in fisheries and aquatic ecological consultancy, and we can ensure that you have the required expert fisheries input into the design, construction and operation of hydropower schemes.
  • Our range of technical services to the hydropower industry include fisheries impact assessments, hydrology modelling, fishway design, intake design and fisheries mitigation technology.
  • We can provide feasibility and ecological constraints reporting at site selection stage.
  • We offer a full suite of baseline ecological surveys to inform the requirements of EIA reporting.
  • Appropriate Assessment (AA) reporting and Habitat Regulations Assessments (HRA) for designated Natura 2000 sites within the study area.
  • Public consultation and Expert Witness for wind farm developments
  • Construction phase ecological monitoring / ecological clerk of works (ECoW)
  • Post-construction and operational phase ecological monitoring.


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