Inlcuding Fish Pass, Achanalt Power Station And Dam, Hydro Electric Scheme, Conon Valley is a Grade C listed building in the Highland local planning authority area, Scotland. First listed on 11 February 2011. Power station.
Inlcuding Fish Pass, Achanalt Power Station And Dam, Hydro Electric Scheme, Conon Valley
- WRENN ID
- long-crypt-sable
- Grade
- C
- Local Planning Authority
- Highland
- Constituency
- Caithness, Sutherland and Easter Ross MP: Jamie Stone (LD)
- Country
- Scotland
- Date first listed
- 11 February 2011
- Type
- Power station
- OS grid reference
- NH 308 619
- Coordinates
- 57.61593, -4.83268
- Source
- Historic Environment Scotland listing
Description
The Achanalt Power Station and Dam, part of a hydroelectric scheme in the Conon Valley, was designed by architect James Shearer for the North of Scotland Hydro Electric Board in 1952 and began generating power in 1957. This compact, tall, single-storey building features two bays and is built into a cliff on the northwest side, with a tailrace that oversails to the southeast. The structure has a random rubble exterior with advanced ashlar eaves and surrounds, situated within a narrow gorge directly next to the River Bran.
The power station includes a large vehicular door on the northwest side, with a small recessed window above it. To the southeast, there is a large tri-partite window with transoms and mullions. Additionally, there is a boarded teak vehicular access doorway that incorporates a smaller pedestrian picket door on the northwest side.
To the southwest of the power station is a fish pass, which consists of a cascade of linked pools made from concrete and natural bedrock.
Inside, the power station has a predominantly functional and plain interior, featuring a deep turbine pit on the southeast side and offices and workshops at the rear. A large gantry crane is incorporated at the roof level, with reinforced gantry and rails along the eastern and western walls.
Local climate
Inlcuding Fish Pass, Achanalt Power Station And Dam, Hydro Electric Scheme, Conon Valley sits in one of the wettest parts of the UK, with an average of 1,470 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.
It experiences an average of 71 freeze-thaw cycles a year, more than 99% of listed buildings. Of these, 55 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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