ASH was the lead environmental consultant on the River Pattack Hydro Scheme for RWE Innogy UK, which gained planning consent in July 2015. 

The project comprises a hydroelectric storage scheme located on the south side of Loch Laggan and the edge of the Cairngorms National Park, approximately 11km west of Dalwhinnie in the Central Highlands. 

Key Tasks

Screening and Scoping

EIA coordination and project management

Landscape and visual impact assessment

Stakeholder consultation

What we did

ASH was originally commissioned by RWE in 2009 to undertake the scoping exercise for the 9MW scheme and subsequently commissioned to carry out the Environmental Impact Assessment. ASH undertook the landscape and visual assessment, land use and recreation assessment and planning review aspects of the project in-house and co-ordinated  ecological and archaeological aspects by local specialist sub-consultants. ASH also played an important advisory role in the design of the scheme, providing illustrative graphics for the proposal, and attending public exhibitions where the scheme was presented to the local community. 

With the exception of Glendoe Hydro Scheme, River Pattack comprises the largest conventional hydro scheme to be granted planning permission in the UK for 50 years. 


Find out more

We’re always happy to answer your questions. If you’d like to find out more about the services we can offer for your project, you can email us on or call 0141 227 3388.