ESB Networks and Planned Outages

Planned Outage

Planned Outages

Sometimes we need to interrupt your supply to carry out essential maintenance. This is called a planned outage or planned supply interruption. 


We appreciate the inconvenience that interruptions cause to our customers and we try wherever possible to carry out work while the lines are live. However, on some occasions, power lines and cables have to be switched out for safety reasons, as it would be otherwise too dangerous for our network repair crews to work on them.  

Giving you notice of a planned outage

If your electricity supply is going to be interrupted for maintenance work, we'll send you a notification card at least two working days in advance.  See our Distribution Service Guarantee (PDF | 1 MB) here.

The card will give you an estimate of the time and duration of the outage. While the vast majority of planned outages are completed within the estimated time, there will be occasions when the work takes longer due to technical or safety reasons. 

Planned outages are also displayed as a green pin on PowerCheck. Over-runs will be updated on Powercheck.

Tip: Keep your freezer closed 

Freezer contents will remain safe for up to 24 hours without electricity if the freezer is kept closed. Typical interruptions are eight hours or less in duration so the contents of your freezer should remain perfectly safe. See more tips on how to prepare for a power cut.

Safety Tip: Safety first - you should regard electricity as being live at all times during an outage. Your power supply could be restored at any moment.