Hydroelectric Plants in Scotland - Highlands
Achanalt
Location: Ross-shire
Operator: Scottish and Southern Energy
Configuration: 1 X 3 MW
Operation: 1962
T/G supplier: ??
Quick Facts: This plant is part of the Conon scheme and is close to Grudie Bridge. It has a weir across the River Bran, a 200m headrace tunnel and the small powerhouse near the Falls of Bran.

Photograph courtesy of Scottish and Southern Energy plc
Posted 1 Jun 2008

Aigas
Location: Inverness-shire
Operator: Scottish and Southern Energy
Configuration: 2 X 10 MW Kaplan
Operation: 1962
T/G supplier: Kvaerner, Elin
Quick Facts: This plant is part of the Affric-Cannich hydroelectric scheme. The Aigas dam is 92m long and 20m high.

Photograph courtesy of Scottish and Southern Energy plc
Posted 26 Dec 2003

Allt na Lairige
Location: Argyllshire
Operator: Scottish and Southern Energy
Configuration: 1 X 6 MW
Operation: 1956
T/G supplier: ??
Quick Facts: The Allt na Lairige scheme uses the water resources of upper Glen Fyne between Sloy and Shira behind a 24m high, 425m dam. This dam features posttensioned steel reinforcement. Water is carried to the power station on the River Fyne 249m below.

Photograph courtesy of Scottish and Southern Energy plc
Posted 1 Jun 2008

Boor Hydro
Location: Ross and Cromarty
Operator: Boor Hydro Ltd
Configuration: 1 X 99 kW Turgo
Operation: 2012
T/G supplier: Gilkes
EPC: Grant Ltd
Quick Facts: This SHP is in Pollewee.

Photograph courtesy of Grant Ltd
Posted 4 Jun 2016

Cassley Rebuild
Location: Sutherland
Operator: Scottish and Southern Energy
Configuration: 1 X 6.6 MW, 1 X 3.4 MW Francis
Operation: 2005
T/G supplier: Alstom
Quick Facts: Shin is the northernmost mainland hydroelectric scheme in Scotland. The hydro works use Loch Shin as the main reservoir along with the headwaters of the Rivers Brora and Cassley. Cassley is on the western shore of Loch Shin where it is fed by water collected in the River Cassley and diverted through a headpond and a 4km tunnel to the powerhouse. The HPP was first commissioned in 1959 and refurbished by Alstom on a turknkey basis.

Photographs courtesy of Scottish and Southern Energy plc
Posted 26 Dec 2003

Ceannacroc
Location: Inverness-shire
Operator: Scottish and Southern Energy
Configuration: 1 X 20, 1 X 4 MW MW
Operation: 1951
T/G supplier: English Electric
Quick Facts: This is part of the Garry-Moriston scheme. A tunnel supplies water from Loch Clunie and the tailrace discharges to the River Moriston.

Photographs courtesy of Scottish and Southern Energy plc
Posted 1 Jun 2008

Clachan
Location: Argyllshire
Operator: Scottish and Southern Energy
Configuration: 1 X 40 MW Francis
Operation: 1950
T/G supplier: GEC
Quick facts: This station has a single generating set operating under a gross head of 294m.

Photograph by Mike Ross (www.corestore.org)
Posted 6 Feb 2005

Fasnakyle
Location: Inverness-shire
Operator: Scottish and Southern Energy
Configuration: 4 X 22 MW Francis
Operation: 1962
T/G supplier: English Electric
Quick Facts: This plant is part of the Affric-Cannich hydroelectric scheme. The eastern slope of the Western Highlands are drained by the main tributaries of the River Beauty and the area’s hydroelectric potential was recognized before 1920. A resource development plan was approved in 1947 for the Affric-Cannich section. The principal works are a 48m dam at Loch Mullardoch on the River Cannich, a 5km tunnel to Loch Benevean on the River Affric, a smaller dam at Loch Benevean and another tunnel to the main generating station at Fasnakyle in Strathglass. The area is very remote and road construction and subsequent hydroelectric plant operation were designed to preserve scenic and natural resources. The generators are directly connected by underground cables to the main transformers and switchgear, concealed in a former gravel pit nearby.

Photograph courtesy of Scottish and Southern Energy plc
Posted 26 Dec 2003

Grudie Bridge
Location: Ross and Cromarty
Operator: Scottish & Southern Energy
Configuration: 2 X 12 MW
Operation: 1950
T/G supplier: John Brown (Boving)
EPC: Shearer & Annand
Quick Facts: This plant is situated by the south shore of Loch Maree and is part of the Conon hydroelectric scheme.

Photograph by Roger McLachlan (geograph)
Posted 31 May 2008

Kilmorack
Location: Inverness-shire
Operator: Scottish and Southern Energy
Configuration: 2 X 10 MW Kaplan
Operation: 1962
T/G supplier: Kvaerner, Elin
Quick Facts: This plant is part of the Affric-Cannich hydroelectric scheme. The Kilmorack dam is 122m long and 26m high.

Photograph courtesy of Andritz
Re-posted 3 Mar 2012

Lairg Dam
Location: Ross-shire
Operator: Scottish and Southern Energy
Configuration: 1 X 3.5 MW Kaplan
Operation: 1957
T/G supplier: Kvaerner
Quick Facts: Part of the Shin scheme. Lairg Dam was built to raise the level of Loch Shin and has a small generating unit incorporated into the 12m dam.

Photograph courtesy of Scottish and Southern Energy plc
Posted 26 Dec 2003

Luichart
Location: Ross and Cromarty
Operator: Scottish and Southern Energy
Configuration: 2 X 17 MW
Operation: 1950
T/G supplier: GEC
EPC: Shearer & Annand
Quick Facts: The Conon scheme includes eight dams, nine tunnels, numerous diversions and six power stations with a total generating capacity of over 100 MW. Water passes through the Mossford, Grundie Bridge and Achanalt power stations channeled into Loch Luichart, through the Luichart power station into Loch Achonachie and then to the Torr Achilty power station. Torr Achilty receives all of the water involved in the Conon scheme.

Photograph by Richard Webb (geograph)
Posted 31 May 2008

Misgeach
Location: Inverness-shire
Operator: Scottish and Southern Energy
Configuration: 350 kW
Operation: ??
T/G supplier: ??
Quick Facts: This is a small compensation power station built as part the Deanie system. It was installed to meet a regulatory requirement to maintain flow in the Uisge Misgeach. It is in intermittent operation.

Photograph by Paul Hookway (geograph)
Posted 1 Jun 2008

Mullardoch
Location: Inverness-shire
Operator: Scottish and Southern Energy
Configuration: 1 X 2.4 MW
Operation: 1963
T/G supplier: Peebles
Quick Facts: Mullardoch Dam formed a combined reservoir from Loch Mullardoch and Loch Lungard. This is the main reservoir for the Fasnakyle power station. The Mullardoch generating equipment is 90ft below these surface structures.

Photograph by Andrew Smith (geograph)
Posted 8 Jun 2008

Shin
Location: Ross-shire
Operator: Scottish and Southern Energy
Configuration: 2 X 12 MW Francis
Operation: 1957
T/G supplier: Kvaerner
Quick Facts: Part of the Shin scheme. Water released from Loch Shin goes into a smaller regulating reservoir known as Little Loch Shin and then passes into an 8km tunnel to Shin power station at Inveran with horizontal Francis machines.

Photograph courtesy of Scottish and Southern Energy plc
Posted 26 Dec 2003

Sloy
Location: Argyllshire
Operator: Scottish and Southern Energy
Configuration: 4 X 32.5 MW
Operation: 1950
T/G supplier: English Electric
Quick Facts: Sloy is west of Loch Lomond and is the largest conventional hydroelectric plant in Great Britain. The Sloy Dam holds the water, this structure is 56m high and 357m long. A 3km tunnel carries water from Loch Sloy through Ben Vorlich to the valve house above the power station. From here, four pipes are laid to the powerhouse at Inveruglas Bay on Loch Lomond. The station has an operating head of 277m.

Photograph courtesy of Neilston WebCam
Posted 1 Jun 2008

Sron Mor
Location: Argyllshire
Operator: Scottish and Southern Energy
Configuration: 1 X 5 MW
Operation: 1957
T/G supplier: ??
Quick Facts: Sron Mor was built by North of Scotland Hydro Electric as a pumped-storage installation with a siingel genset and a separate pump. Water is released from Loch Shira and discharges into Lochan Sron Mor, the headpond for a 4mi tunnel to Clachan power station. The pumping set operated intermittently for many years.

Photograph by Paul Hookway (geograph)
Posted 22 Jun 2008

Storr Locks
Location: Isle of Skye
Operator: Scottish and Southern Energy
Configuration: 2.4 MW
Operation: 1952
T/G supplier: ??
Quick Facts: This was the first commercial power station on Skye.

Photograph by John Allan (geograph)
Posted 1 Jun 2008

   

Trinafour
Location: Argyllshire
Operator: Scottish and Southern Energy
Configuration: 1 X 550 kW
Operation: 1959
T/G supplier: ??
Quick Facts: The station receives compensation water from Loch Errochty, via a 1mi above-ground pipeline. Gross head is 91m and average annual output is about 4 GWh.

Photograph by Paul Hookway (geograph)
Posted 22 Jun 2008

Abbreviations

Data: industcards, Platts UDI World Electric Power Plants Data Base

Updated 04-Jun-2016

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