Lethans Wind Farm (106 MW)
Lethans Wind Farm is a 106 MW wind farm project in Dumfries and Galloway, Scotland. Its status in the Renewable Energy Planning Database (July 2026 extract) is: approved on 18 June 2021, not yet built; the record was last updated on 8 April 2025. As a project over 50 MW in Scotland, it is decided by Scottish Ministers under Section 36. REPD records the planning permission as expiring on 18 June 2026, but the project holds a Contracts for Difference award (AR6), so construction may have started. Check the planning authority's register for the latest position.
REPD records the planning permission as expiring on 18 June 2026, but the project holds a Contracts for Difference award (AR6), so construction may have started.
Planning timeline
| Date | Stage |
|---|---|
| 22 May 2019 | Application submitted |
| 18 June 2021 | Section 36 consent granted (Scottish Ministers) |
| 18 June 2026 | Permission expired |
Project details
- Technology
- wind farm
- Capacity
- 106 MW
- Status (REPD)
- approved, not built
- Record last updated
- 8 April 2025
- Operator or applicant
- OnPath Energy Limited
- Planning authority
- Scottish Government (S36)
- Planning application reference
- ECU00001856
- Turbines
- 22
- Turbine height
- 220 m
- Address (REPD)
- Land to the north east of New Cumnock, Lethans,
- Council area (by location)
- Dumfries and Galloway
- Time to decision
- 108 weeks
- Contracts for Difference
- AR6
- REPD reference
- 6827
Earlier applications for this site
| Application | MW | Submitted | Outcome |
|---|---|---|---|
| Lethans Wind Farm EC00002086 | 88 | 13 March 2015 | replaced by a revised application |
Who decides
As a project over 50 MW in Scotland, it is decided by Scottish Ministers under Section 36. Scottish Government (S36) refused 18% of 334 decided solar, wind and battery applications in REPD (median 127 weeks to a decision). Across all UK planning authorities 19% of 10,236 decided applications were refused.
Other large projects within 10 km
| Project | Type | MW | Status | km |
|---|---|---|---|---|
| Glenmuckloch Wind Farm | wind farm | 33.6 | approved, not built | 2.0 |
| Lethans Wind Farm Extension | wind farm | 66 | approved, not built | 3.2 |
| Lagrae Battery Energy Storage System | battery storage | 400 | application submitted | 3.3 |
| Wind Turbines at Former Glenmuckloch Surface Coal Mine North Of Kirkconnel | wind farm | 33.6 | application submitted | 3.4 |
| Sandy Knowe Wind Farm | wind farm | 81.6 | operational | 5.7 |
| Garleffan Wind Farm | wind farm | 21.6 | refused on appeal | 6.1 |
| Hare Hill Extension | wind farm | 29.8 | operational | 7.0 |
| Hare Hill (East Ayrshire) | wind farm | 13.2 | operational | 7.0 |
| Glen Water Wind Farm | wind farm | 49.9 | application submitted | 7.2 |
Status and dates as recorded in the Renewable Energy Planning Database (July 2026 extract); the database is compiled from public sources and can lag behind council decisions. Location: REPD grid reference (55.4206, -4.0818).