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Fasnakyle Compensation Set
Client: Scottish & Southern Energy
Value: £2.5 million
Construction Period: 12 months
Year Completed: 2005
The project involved the construction of an extension to the existing hydro-electric power station at Fasnakyle, in Glen Affric, Inverness- shire. The works were required to accommodate a fourth 17MW turbine generating set to run continuously on compensation water and thus generate premium prices for renewable green energy for the client.
Large scale, in-house designed, temporary works included sheet piled retaining walls to the existing adjacent carriageway and rock anchored concrete walls to the 10m deep rock excavation and the installation of a cellular sheet piled cofferdam in the River Cannich.
Close liaison was required with the SEPA due to environmental sensitivity of the adjacent salmon spawning grounds in the adjacent river Cannich.
Once excavated a heavily reinforced concrete sub-structure was constructed with a steel/blockwork superstructure. The external face of the superstructure was clad with random stone from Classach quarry to match the existing as the power station is a 1950's listed building.
The project also included exposing and cutting into the existing riveted steel penstock which supplied the original turbines in order to insert a 2.7m dia bifurcation section to supply the additional turbine.
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