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Kingairloch Hydro Scheme

Scotland

Project scope

Kingairloch Hydro Scheme Development is a new hydro-electric scheme located in the Morven peninsula west of Fort William, Argyll, Scotland.

A Francis turbine generates 3.5 MW with a flow of 3.23m3/s at 150m head. The owner of the project is Scottish & Southern Energy and includes the first new dam built by them since the 1960s. The hydro scheme comprised the following elements:

Loch Uisge Dam

A new dam was included to provide active storage of about 800,000m3 by raising the level of Loch Uisge by 3.0m. The dam design incorporated:

A 22m long spillway designed to discharge the 1:10,000yr storm event
A 9 basin fish pass
Access bridge
Control room
Intake works with manually raked trash screen

Penstocks

To convey the water to the turbine a 3.3km long pipeline or ‘Penstock’ was constructed in 1200mm dia GRP. A subsidiary 900mm dia GRP penstock from the Ghardail Intake connected into the main penstock, and other low pressure aqueducts transferred water into Loch Uisge.

Turbine House

The turbine, generator and control equipment is located in the Turbine House located near Kingairloch village. An EOT crane is included for lifting the turbine generator for maintenance purposes.

Contract value

£5+ million

Key features

Detailed design of civils works
Site supervision
Geotechnical investigations and design
Hydrology
Flood studies
Dam and reservoir engineering
Certification of reservoirs

Appointment

Civils designer to main contractor
Site supervision for Employer
Construction Engineer, Reservoirs Act 1975
Planning Supervisor