No.2 OF 650 · APPROVED, NOT BUILT MP: David Mundell (Conservative) Scotland

Dumfriesshire, Clydesdale and Tweeddale

Dumfriesshire, Clydesdale and Tweeddale was paid £15m last year to switch off its wind farms, because the wires south were full. That would cover every local household's electricity for 203 days. A further 913 MW of approved clean power (almost all onshore wind) is still waiting to be built here: enough to supply a year's electricity to 773,000 homes. A 500 MW battery approved at Redshaw Battery Energy Storage in 2025 would store power that is currently wasted; it has not been built. A 200 MW battery was refused planning here in 2026; while discharging it could have supplied about 701,000 homes.

£15m
paid to wind farms here not to generate in the last year — enough to pay for every household here's electricity for 203 days.
Elexon balancing data, 12 months to 31 Jul 2026 · No.5 of 19 seats with visible switch-offs · how we worked this out
913 MW
of clean power — almost all onshore wind — approved and still not built, enough to supply a year's electricity to 773,000 homes — 19 times every household in this constituency. Approved at least two years ago; waiting on the grid, not on planning. That is 0.6× the renewable capacity actually running here.
18 projects · 862 MW onshore wind, 51 MW solar · planning database (REPD), July 2026 · how we worked this out
£3.8m
is what the grid gap costs this constituency's 40,997 households in a year between them — £92 each, about 51 days of one home's electricity.
The £92 per household is a national figure — identical in every GB seat. Only the seat total varies, with the number of households · NESO · how we worked this out

The waiting list

6 of 18 waiting projects · years since approval
Kennoxhead Wind Farm 62 MW
11.0 YRS
Glenmuckloch Wind Farm 34 MW
9.2 YRS
Whitelaw Brae Wind Farm 57 MW
8.7 YRS
Twentyshilling Hill Wind Farm 38 MW
6.6 YRS
Kennoxhead Wind Farm Extension (Phase 2) 38 MW
5.4 YRS
Cumberhead West Wind Farm 126 MW
4.7 YRS

Every approved, unbuilt project

approved 24+ months ago, still not generating · planning database, July 2026
SiteTechnologyEnough forCapacityApprovedWaiting
Sanquhar 2 Community Wind FarmWind Onshore269,000 homes308.0 MW2023-082.9 yrs
Cumberhead West Wind FarmWind Onshore110,000 homes126.0 MW2021-114.7 yrs
Douglas West Wind Farm (extension)Wind Onshore68,000 homes78.0 MW2021-114.7 yrs
Kennoxhead Wind FarmWind Onshore54,000 homes62.0 MW2015-0711.0 yrs
Whitelaw Brae Wind FarmWind Onshore50,000 homes57.0 MW2017-128.7 yrs
Priestgill Wind FarmWind Onshore40,000 homes46.2 MW2021-124.6 yrs
Kennoxhead Wind Farm Extension II (Penbreck) (Phase 2)Wind Onshore40,000 homes45.6 MW2023-023.4 yrs
Kennoxhead Wind Farm Extension (Phase 2)Wind Onshore34,000 homes38.4 MW2021-035.4 yrs
Jockstown Farm Solar FarmSolar Photovoltaics14,000 homes37.9 MW2022-113.7 yrs
Twentyshilling Hill Wind FarmWind Onshore33,000 homes37.8 MW2019-126.6 yrs
Glenmuckloch Wind FarmWind Onshore29,000 homes33.6 MW2017-059.2 yrs
Kennoxhead Wind Farm (Phase 2)Wind Onshore24,000 homes28.0 MW2022-064.1 yrs
Central Eco Park - Solar FarmSolar Photovoltaics4,400 homes12.0 MW2023-023.5 yrs
Hazelside farmWind Onshore1,400 homes1.6 MW2014-1211.6 yrs
Cochran Limited, Three Trees Road - Solar PanelsSolar Photovoltaics200 homes0.5 MW2023-122.7 yrs
Harbro, Birkhill Commercial Park - Solar PanelsSolar Photovoltaics100 homes0.4 MW2023-082.9 yrs
Samye Ling Centre - Solar PanelsSolar Photovoltaics100 homes0.3 MW2024-072.0 yrs
Birkhill Mill, Cairnhouses Road - Wind TurbinesWind Onshore— MW2023-053.2 yrs

Plus 3 more approved within the last two years.

Batteries

projects of 10 MW and above · planning database, July 2026 · what batteries do →
SiteSizeStatusWhile discharging
Coalburn II Energy Storage Facility - Battery Storage Facility1,000 MWbeing built 2024could supply ≈3,504,000 homes
High Netherfauld House Farm 1, Tower Road - Battery Energy Storage System502 MWcould supply ≈1,761,000 homes
Redshaw Battery Energy Storage500 MWapproved, not built 2025could supply ≈1,752,000 homes
Gretna Green Battery Storage456 MWapproved, not built 2025could supply ≈1,598,000 homes
Lagrae Battery Energy Storage System400 MWcould supply ≈1,402,000 homes
Red Moss - Battery Storage342 MWapproved, not built 2025could supply ≈1,198,000 homes
Hagshaw Energy Cluster – Western Expansion225 MWcould supply ≈788,000 homes
Scoop Hill Wind Farm200 MWrefused 2026could supply ≈701,000 homes
Carlisle Road - Battery Energy Storage System200 MWapproved, not built 2025could supply ≈701,000 homes
Bodinglee Wind Farm106 MWcould supply ≈371,000 homes
Daer Wind Farm100 MWcould supply ≈350,000 homes
Harestanes Windfarm100 MWbeing built 2019could supply ≈350,000 homes

Wind farms paid to switch off

12 months to 31 Jul 2026 · mapping confidence shown · mapping file
SitePaid, 12 monthsEnergy lostConfidence
Sandy Knowe Wind Farm£2.6ma year of 26,000 homes' electricityhigh
Clyde Wind Farm£2.4ma year of 10,000 homes' electricitymedium
Kennoxhead Wind Farm£1.6ma year of 18,000 homes' electricityhigh
Harestanes£1.3ma year of 6,200 homes' electricityhigh
Twentyshilling Hill Wind Farm£1.2ma year of 17,000 homes' electricityhigh
Cumberhead Wind Farm£1.1ma year of 18,000 homes' electricityhigh
Douglas West and Dalquhandy Renewable Energy Project£1.0ma year of 14,000 homes' electricityhigh
Clyde Wind Farm Extension (Clyde 2)£950ka year of 3,900 homes' electricitymedium
Middle Muir Wind Farm£910ka year of 5,900 homes' electricityhigh
Ewe Hill (extension)£760ka year of 3,900 homes' electricityhigh
Minnygap£410ka year of 2,100 homes' electricityhigh
Whiteside Hill£230ka year of 1,000 homes' electricityhigh
Minsca£130ka year of 500 homes' electricityhigh
Dalswinton£81ka year of 300 homes' electricityhigh
Andershaw£68ka year of 300 homes' electricityhigh
Hagshaw Hill Wind Farm Extension£42ka year of 1,400 homes' electricityhigh

What this page does not show

The switch-off figure covers the big wind farms on the national grid only; smaller farms on the local grid are switched off invisibly, so it is a floor. Offshore wind is counted nationally, never per seat. The planning database can run a quarter behind reality.

Electricity does not travel from a particular project to particular houses. Everything generated goes into the national grid and everyone draws from that shared pool, so "enough for X homes" is a way of sizing the electricity — not a claim that these homes would be powered by this site. Battery storage is counted separately from generation: it moves power in time rather than making it.

Planning statuses come from the government's planning database (REPD), which records what was decided and when, but not why. Where a project was refused we say so and name the authority; for the reasons, look up the planning reference on that council's own register. How to check any figure on this page →

Read the full method, including everything we cannot see →

What has David Mundell said about the grid in Parliament? Search Hansard →

See the full league table Data (JSON)