Application submitted

Lethans Extension Wind Farm

Learn all about our vision for the Lethans Wind Farm Extension and how it will deliver even greater benefits to the local community.

OnPath Energy has applied for planning permission to extend Lethans Wind Farm to enable the generation of an extra 60 MW of renewable electricity and an additional £9 million in community benefits over its lifetime.

The proposed plans for the Lethans Extension, which follows extensive community engagement, will result in an additional 10 turbines placed at the site, generating enough renewable electricity to power an additional 38,000 homes.

OnPath Energy (then Banks Renewables) submitted a planning application under Section 36 of the Electricity Act 1989 to the Scottish Government Energy Consents Unit (ECU) seeking consent for Lethans Wind Farm Extension. This application also applies for a direction under Section 57(2) of the Town and Country Planning (Scotland) Act 1997 for planning permission for the development to be deemed granted.

Any persons wishing to make formal representations should do so by contacting the ECU on their website, by email or by post, quoting the application reference ECU00002221. Full contact details are available

A copy of the full Lethans Wind Farm Extension planning application can a be found here.

Support Lethans Extension

Step 1 of 3


Since OnPath Energy (formerly Banks Renewables) received planning permission for the Lethans Wind Farm near Cumnock in East Ayrshire, Scotland, we have been exploring ways to optmise the benefits from the site further. 

Our proposal, created in full consultation with the local community and East Ayrshire Council, contains an additional 10 wind turbines, known as the Lethans Wind Farm Extension, which will deliver significant benefits to the local communities and businesses over the project’s lifespan.

Key Facts

Lethans Wind Farm Extension

Read on to discover the plans and wide range of social, economic and environmental benefits Lethans Wind Farm Extension will bring to the local community, while supporting the UK’s transition to renewable energy.

Local Authority:

East Ayrshire Council

Location of site:

Situated on land north east of New Cumnock and north west of Kirkconnel

Postcode of nearby property:

KA18 4NP

Current land use:

Commercial forestry

Number of turbines:

10 additional turbines up to 250m in height to tip (tallest UK onshore wind turbines)

Maximum generating capacity:


Life span:

30-year operational lifespan

Grid connection:

Connects via underground cable to Glenmuckloch Substation


Via Mansfield Road at the entrance to New Cumnock

Meet the team

Robin Winstanley
Alan Wells