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Inveruglas, Loch Sloy Hydro-electric Power Station

Hydroelectric Power Station (Modern)

Site Name Inveruglas, Loch Sloy Hydro-electric Power Station

Classification Hydroelectric Power Station (Modern)

Alternative Name(s) Sloy Power Station; Loch Sloy Hydro-electric Scheme; Inveruglas Water; Inveruglas Bay; Loch Lomond

Canmore ID 94415

Site Number NN30NW 7

NGR NN 32092 09818

Datum OSGB36 - NGR


Ordnance Survey licence number 100057073. All rights reserved.
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Administrative Areas

  • Council Argyll And Bute
  • Parish Arrochar
  • Former Region Strathclyde
  • Former District Dumbarton
  • Former County Dunbartonshire

Archaeology Notes

NN30NW 7.00 32092 29818

NN30NW 7.01 31916 09961 Feeder Pipes

For associated Loch Sloy (reservoir and dam), see also NN21SE 2.00.

Loch Sloy (1950). Buttress dam [NN21SE 2.01] on Loch Sloy (Balfour Beatty & Co), with main tunnel and surge shaft (Edmund Nuttall Sons & Co) leading to pipeline [NN30NW 7.01] (Sir William Arrol & Co) feeding a power station [NN30NW 7.00] (Hugh Leggat Ltd) on Inveruglas Bay, on Loch Lomond. Average annual output 120 mW.

J Miller 2002.


Aerial Photography (3 May 2007)

Field Visit (2010)

Sloy power Station is a large station with 4 main turbines giving a capacity of 152 MW when all are running. The station receives water via a tunnel and high pressure pipeline directly from Sloy Dam (see separate item). The station also includes an additional smaller turbine, the house set, which is used to provide power to the station itself. The station formerly operated as a control centre for the Sloy / Awe group of stations and has associated control room, office and boardroom space in addition to a grand processional entrance to the building. Sloy Power Station is an excellent example of a large station incorporating control room and office space in addition to a large turbine hall. The building is an early example of the work of NoSHEB and illustrates their confidence in the development of Scotland’s resources for hydro-electricity at this time. The interest of an early date for the work of NoSHEB is added too by the applied architectural scheme which fuses a modern functionalism with classical detailing of elements such as the large pilasters applied to the main elevation. The station also occupies a prominent position adjacent to the A85 trunk road from Glasgow to Crainlarich. P L Payne, 1988, 5; E Wood, 2002, 38; J Miller, 2002.


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