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Gleann Casaig Hydro Scheme

Client: H14 Energy Limited

Value: £1.4m

Project Description:

Construction of a 500kw run of river hydro scheme on the Allt Gleann Casaig above the Glen Finglas Reservoir, Brig O’Turk.

Works Included:

  • Excavation of trenches and installation of 3.5km of 560mm Ø HPPE and 500mm Ø Ductile iron pipe
  • Breaking our rock and forming foundations for powerhouse
  • Formation of concrete slab to accommodate installation of Gilks new compact twin jet pelton turbine
  • Erection of steel framed powerhouse.
  • Construction of 5m high reinforced concrete main Intake and 5no. secondary intakes
  • Installation of reinforced concrete thrust and transition blocks
  • Formation of new 2.8km footpath linking existing access track
  • Reinstatement of ground following installations

- Due to remote location, we utilised on site concrete batching with all terrain mixers.
- Steep terrain presented a challenge for electro butt fusion welding equipment.
- Comprehensive silt management was critical due to adverse weather conditions.
- Strict planning conditions due to location within Loch Lomond and Trossachs National Park       involved working closely with SEPA, SNH and the Woodland Trust.
- Working under 4 separate Cars Licences and 6 licences for water abstraction.