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Ulster (Republic of Ireland counties) Power Cuts

Ireland has no open live feed, so the quickest way to check Ulster (Republic of Ireland counties) is the official PowerCheck map from ESB Networks.

This page covers the three Ulster counties in the Republic of Ireland: Cavan, Donegal and Monaghan, where ESB Networks is the operator. The other six Ulster counties are in Northern Ireland and are served by NIE Networks, so PowerCheck does not cover them. Donegal and Cavan were among the worst-affected counties in Storm Isha in January 2024, and Storm Darragh in December 2024 hit the North West particularly hard. Cavan was also named among the areas affected by Storm Ali in 2018.

Population
314,076
Estimate, 2022
Network operator
ESB Networks
About 152,490 customers in this area
Weather warnings
0
Met Éireann
Major past events
2
Storm Isha

Who to contact in Ulster (Republic of Ireland counties)

The network operator responsible for faults in Ulster (Republic of Ireland counties). Search your address on its official PowerCheck map.

Ireland network operators, PowerCheck map links and phone numbers
Network operatorOfficial PowerCheck mapReport by phone
ESB NetworksOpen ↗1800 372 999

If you see a fallen power line, do not touch it or go near it and call 112 or 999.

Ulster (Republic of Ireland counties) on the Ireland map

LeinsterMunsterConnachtUlster (Republic of Ireland counties)LeinsterMunsterConnachtUlster (Republic of Ireland counties)
Ireland has 4 provinces, shown over a 800 by 900 map.

Boundaries: © Tailte Éireann, CC BY 4.0.

Weather warnings

Met Éireann lists no active warnings for this area.

Source: Met Éireann

Counties in Ulster

  • Donegal167,084
  • Cavan81,704
  • Monaghan65,288

Population from the 2022 Census.

Largest places in Ulster (Republic of Ireland counties)

  • Letterkenny
  • Cavan
  • Monaghan
  • Buncrana
  • Carrickmacross

Nearby provinces

Reliability in Ulster (Republic of Ireland counties)

Average minutes without power and interruptions per customer, as published by the regulator or operator

Network operatorTime without powerInterruptionsYear
ESB Networks2 hr 12 min1.472025

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 Ulster (Republic of Ireland counties)

Totals may cover every area affected, not only this one. Full accounts are on the Ireland page.

  1. Storm Isha

    21 January 2024

    235,000 customers affected

    Counties Donegal, Sligo, Leitrim, Mayo, Cavan, Longford and Roscommon were worst affected, and about 12,000 were still out on 24 January.

    Source: ESB Networks, update on Storm Isha (24 January 2024)

  2. Storm Ali

    19 September 2018

    140,000 customers affected

    ESB Networks named Cavan, Sligo, Galway, Thurles, Castlebar, Tralee, Portlaoise, Mullingar and Dundalk among the areas affected.

    Source: ESB Networks, update on Storm Ali (19 September 2018)

Ulster (Republic of Ireland counties) power cut news

Ulster (Republic of Ireland counties) power cut FAQ

Who do I contact about a power cut in Ulster (Republic of Ireland counties)?

ESB Networks (1800 372 999) repairs the local network in Ulster (Republic of Ireland counties), which includes Letterkenny, Cavan and Monaghan.

What was the biggest power cut in Ulster (Republic of Ireland counties)?

Storm Isha (21 January 2024) affected about 235,000 customers across the affected areas. Counties Donegal, Sligo, Leitrim, Mayo, Cavan, Longford and Roscommon were worst affected, and about 12,000 were still out on 24 January.

How reliable is the power supply in Ulster (Republic of Ireland counties)?

ESB Networks reported 2 hr 12 min of interruption per customer in 2025. 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. Weather warnings are from Met Éireann, under its open data licence, and are not altered.

PowerOutageTracker.com. "Ulster (Republic of Ireland counties) Power Cuts." Accessed 3 November 2026. https://poweroutagetracker.com/world/ireland/ulster
Sources (7)