Tummel 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.
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. Click here to find out more.


Power stations
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
Major dam | 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 |