Great Glen hydro scheme

The Great Glen runs for more than 100 kilometres from Inverness in the northeast, to Fort William in the southwest, following a geological fault line that divides north and south Scotland.

Power stations

Power stations	Capacity (MW)	Gross head (metres)	Average annual output (million units)	Year completed
Ceannacroc	20	90	87	1956
Livishie	15	259	29	1962
Glenmoriston	37	93	15.3	1953
Quoich	18	101	87	1955
Invergarry	20	53	78	1956
Mucomir	1.7	7	6.6	1962

Major dams

Major dam	Type	Length	Height	Completed
Cluanie	Mass gravity	674	40	1956
Loyne	Mass gravity	549	22	1956
Dundreggan	Mass gravity	140	18	1957
Quoich	Rock fill with articulated concrete face	320	38	1956
Invergarry	Mass gravity	47	17	1956

If you're interested in our hydro heritage, visit Pitlochry Dam Visitor Centre, located beside our Pitlochry Power Station in Perthshire, Scotland.

The visitor centre showcases the rich history of hydro electricity in the north of Scotland and how it transformed all our lives. On display are a number of fascinating artefacts that show how generations of homes have been transformed by electrical appliances.

Visitors will meet the visionaries, such as Tom Johnston, who saw the untapped potential of hydro power in Scotland as well as hear the stories of the Hydro Boys and Tunnel Tigers who lived – and sadly in some cases died – building the schemes.

Pitlochry’s ‘fish ladder’ was integral to the design for the hydro electricity scheme in the early 1950’s. Thousands visit the Dam to see the salmon swim to their breeding grounds up river and now everyone can learn the secrets of that incredible journey.