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.
£50 MILLION INVESTMENT IN TUMMEL BRIDGE POWER STATION
In September 2024, we completed a £50 million investment in Tummel Bridge Power Station to ensure it can be part of Scotland’s energy mix for generations to come.
The project involved the replacement of the station’s two original ‘Camel Back’ twin-runner, horizontal Francis hydro turbines, which were installed in 1933, with modern technology.
The repowering project has successfully increased the power station’s potential generation output from 34 to 40 megawatts (MW) during optimum conditions and will extend the station’s working life by at least 40 years.
This means Tummel Bridge Power Station will be running in the power system of 2050 and will play a continuing role in harnessing homegrown hydro power for a net-zero future in Scotland and the UK.
For more information on the completion of one of the largest investments in our hydro fleet, visit: Tummel Bridge Power Station officially reopened by Scotland’s First Minister | SSE Renewables
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 |