Northern Ireland Power Cuts
NIE Networks doesn't share live data we can use, so we can't show a count for Northern Ireland. Its official power cut map is linked below.
NIE Networks, part of ESB, serves over 966,000 customers and is the only network operator, while SONI runs the transmission system and the Utility Regulator oversees both. The grid links to the Republic of Ireland by a 275 kV interconnector and to Scotland by the Moyle Interconnector. The 105 number does not cover Northern Ireland, so the helpline is 03457 643 643. NIE Networks described Storm Eowyn in January 2025 as the first red weather alert issued in Northern Ireland; it left 285,000 households and businesses without power, about a third of all properties.
Who to contact in Northern Ireland
The network operator responsible for faults in Northern Ireland. Search your address on its official power cut map.
| Network operator | Official power cut map | Report by phone | Total customers | Out here now |
|---|---|---|---|---|
| NIE Networks | Open ↗ | 03457 643 643 |
If you see a fallen power line, stay at least 10 metres away and call 999.
Northern Ireland on the United Kingdom map
Boundaries: Office for National Statistics, licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2025.
Weather warnings
Met Office lists no active warnings for this area.
Source: Met Office
Largest places in Northern Ireland
- Belfast
- Derry
- Lisburn
- Newry
- Bangor
- Armagh
Reliability in Northern Ireland
Average minutes without power and interruptions per customer, as published by the regulator or operator
| Network operator | Time without power | Interruptions | Year |
|---|---|---|---|
| NIE Networks | 1 hr 23 min | 0.70 | 2024 |
Definitions vary by source, for example in how major storms are treated, so these figures aren't a ranking. See each operator's page for the exact scope.
Major power cuts affecting Northern Ireland
Totals may cover every area affected, not only this one. Full accounts are on the United Kingdom page.
Storm Eowyn
24 January 2025633,000 customers affected
NIE Networks said a third of all properties in Northern Ireland lost power, and it expected to finish reconnections on 3 February 2025.
Northern Ireland power cut FAQ
Who do I contact about a power cut in Northern Ireland?
NIE Networks (03457 643 643) repairs the local network in Northern Ireland, which includes Belfast, Derry and Lisburn.
What was the biggest power cut in Northern Ireland?
Storm Eowyn (24 January 2025) affected about 633,000 customers across the affected areas. NIE Networks said a third of all properties in Northern Ireland lost power, and it expected to finish reconnections on 3 February 2025.
How reliable is the power supply in Northern Ireland?
NIE Networks reported 1 hr 23 min of interruption per customer in 2024. Scope differs between sources, so treat these as a guide and not a ranking.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Live data is credited to each network operator's open-data licence below. Weather warnings are © Crown copyright, Met Office.
PowerOutageTracker.com. "Northern Ireland Power Cuts." Accessed 3 November 2026. https://poweroutagetracker.com/world/united-kingdom/northern-ireland
Sources (7)
- ONS, Population estimates for the UK, England, Wales, Scotland and Northern Ireland, mid-2025 (release of 1 October 2026; Scotland from NRS, Northern Ireland from NISRA)
- NIE Networks, Annual Report and Financial Statements, year ended 31 December 2025
- NIE Networks, Storm Eowyn update (3 February 2025)
- Utility Regulator (Northern Ireland), About us
- SONI, Northern Ireland's electricity Transmission System Operator
- DESNZ, DUKES 2026 Table 5.11: power stations in the UK operational at end May 2026
- NIE Networks, Condition 19 Transmission and Distribution System Performance Report 2023/24 (May 2024)