Tummel Valley hydro scheme
The Tummel scheme stretches from Dalwhinnie, famous for its whisky distillery, in the north, to the remote Rannoch Station in the west, and the town of Pitlochry in the east.
Number of power stations
Total combined generation capacity
TUMMEL BRIDGE POWER STATION REFURBISHMENT
The iconic Tummel Bridge Power Station is currently undergoing a comprehensive refurbishment to ensure it can remain part of Scotland's energy mix for generations to come.
Refurbishment works commenced in Spring 2022, involving the replacement of the hydro station’s two turbines, which had been in operation since the power station started producing energy in 1933.
The installation of two bespoke turbines is progressing well, with all the large components for the turbines delivered to site in July and September 2023. The next stage of the project concludes the installation and commissioning of each turbine, which we expect to complete this year.
The new energy efficient turbines, specially designed to fit the available space at Tummel Bridge power station, will increase the facility’s potential output from 34 to 40 Megawatts.
Power stations | Capacity (MW) | Gross head (metres) | Average annual output (million units) | Year completed |
Gaur | 7.5 | 30 | 21 | 1953 |
Cuaich | 2.5 | 27 | 7 | 1959 |
Loch Ericht | 2.2 | 55 | 12 | 1962 |
Rannoch | 44 | 156 | 187 | 1930 |
Tummel | 34 | 53 | 142 | 1933 |
Errochty | 75 | 186 | 103 | 1957 |
Trinafour | 0.5 | 91 | 3 | 1959 |
Clunie | 61 | 53 | 186 | 1950 |
Pitlochry | 15 | 15 | 60 | 1950 |
Major dams | Type | Length | Height | Completed |
Gaur | Concrete gravity | 110 | 13 | 1958 |
Errochty | Buttress | 501 | 49 | 1957 |
Clunie | Mass gravity | 116 | 21 | 1951 |
Pitlochry | Mass gravity | 145 | 16 | 1951 |