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Kirkthorpe Hydropower Scheme

Kirkthorpe Hydropower scheme situated on Kirkthorpe Weir on River Calder, near Wakefield, South Yorkshire.

Kirkthorpe Hydropower scheme is Yorkshire’s largest-ever low head hydro-electric scheme  and on the largest weir in West Yorkshire. JNP Group provided structural and civil engineering.

The scheme consists of a single Kaplan turbine which is estimated to produce 2.4 million kilowatt-hours per annum, equivalent to the consumption of 800 households.

Sheet piles have been installed to create a cofferdam alongside the weir, and extensive temporary works propping allowed excavation and construction of the reinforced concrete channel within the cofferdam. 

 A 3.8m fish pass  allows safe passage of migratory fish upstream. Fish traveling downstream will be prevented from entering the hydro scheme by the custom built inlet screen.

Project Value: £6m

Client: Yorkshire Hydropower Ltd

Kirkthorpe Hydropower Scheme

Design Services Provided

  • Civils including sheet piles, anchor piles, ties and cofferdam
  • Reinforced Concrete (RC) retaining walls
  • In situ RC works (concrete channel, suspended slabs, walls, and structural capping beams)
  • Structural steelwork (intake screen, permanent propping)
  • Secondary steelwork (stairs, ladders, walkways)
  • Access track
  • Substation foundations
  • All RC detailing works
  • Principal designer