No.57 of 650 · approved, not built MP: Robin Swann (Ulster Unionist Party) Northern Ireland

South Antrim

South Antrim has 111 MW of clean power (mostly solar) approved and still not built: enough to supply a year's electricity to 64,000 homes. When the wires are too full to carry the power, Britain pays wind farms to switch off instead. No wind farm here is paid that way — almost all of it goes to wind farms in Scotland. Northern Ireland is on the all-Ireland grid, so Britain's grid bottlenecks do not reach bills here in the same way. There is also 42 MW of wind running here on the local network. If that gets switched off, no national record shows it.

Not visible
here
42 MW of wind is running in this constituency, but it sits on the local network rather than the national grid — so if it is paid to switch off, no national record shows it. That is why this seat has no figure here: not because nothing happens, but because nobody publishes it. The £ figure for this seat is a floor, not a zero.
111 MW
of clean power — mostly solar — approved and still not built, enough to supply a year's electricity to 64,000 homes — about as many homes as this constituency has. Approved at least two years ago; waiting on the grid, not on planning. That is 1.3× the renewable capacity actually running here.
10 projects · 64 MW solar, 47 MW onshore wind · planning database (REPD), July 2026 · how we worked this out
Different
grid
Northern Ireland is part of the all-Ireland Single Electricity Market, not the GB grid, so the GB grid-gap bill does not apply here.

The waiting list

4 of 10 waiting projects · years since approval
Ballyutoag Wind Farm 12 MW
10.6 YRS
South Antrim Solar Park - Phase 2 40 MW
10.3 YRS
Steeple Road 25 MW
8.2 YRS
Whappstown & Castlegore Windfarms 23 MW
7.0 YRS

Every approved, unbuilt project

approved 24+ months ago, still not generating · planning database, July 2026
SiteTechnologyEnough forCapacityApprovedWaiting
South Antrim Solar Park - Phase 2Solar Photovoltaics14,000 homes39.5 MW2016-0410.3 yrs
Steeple RoadSolar Photovoltaics9,100 homes25.0 MW2018-058.2 yrs
Whappstown & Castlegore WindfarmsWind Onshore20,000 homes23.1 MW2019-087.0 yrs
Ballyutoag Wind FarmWind Onshore10,000 homes11.5 MW2015-1210.6 yrs
Seegronan Wind Farm ExtensionWind Onshore7,900 homes9.0 MW2017-069.1 yrs
Lands at Ballyutoag RoadWind Onshore2,000 homes2.3 MW2018-088.0 yrs
Laurel LaneWind Onshore400 homes0.5 MW2020-046.3 yrs
Wind Turbine Alterations in RandalstownWind Onshore200 homes0.2 MW2022-054.2 yrs
Aughnabrack Road Replacement TurbineWind Onshore— MW2022-074.1 yrs
Boghill Road Wind TurbineWind Onshore— MW2022-103.8 yrs

Plus 1 more approved within the last two years.

Batteries

projects of 10 MW and above · planning database, July 2026 · what batteries do →
SiteSizeStatusWhile discharging
Carncome, Lislunnan Road - Battery Energy Storage150 MWapproved, not built 2026could supply ≈526,000 homes
Battery Energy Storage System Development in Ballymena79 MWapproved, not built 2025could supply ≈277,000 homes
Battery Energy Storage System Facility in Antrim50 MWapproved, not built 2025could supply ≈175,000 homes

What this page does not show

Smaller wind farms on the local grid are also switched off; national data does not show it, so the £ figure here is a floor, not a zero. 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 Robin Swann said about the grid in Parliament? Search Hansard →

See the full league table Data (JSON)