For Faults/Emergencies (24 hour / 7 day service) Ring 1850 372 999 or  if calling from outside Republic of Ireland, phone +353 21 2382410

For more information on the ESB Networks Apprenticeship Campaign, phone  1890 39 39 39 or email

Feedback & Complaints

How do I register a complaint?

You can register your complaint with us in the following ways:

  • You can phone our National Customer Care Centre on 1850 372 757 or +353 21 2386555 (outside of Ireland)
  • email:
  • Write to: Customer Relations, ESB Networks, Sarsfield Road, Wilton, Cork Ireland
  • Fax 021 484 4261


Please have your MPRN number when contacting us. Please provide us with as much relevant information as possible as this will help us deal with your complaint.

Our National Customer Care Centre will make every effort to resolve the matter. If it cannot be resolved there and then, your complaint will be referred on to the relevant section and they will arrange for you to be contacted within 10 working days.

Feedback, tell us what you think click here.


In the event you are not happy with our response to your complaint or the way it was handled you can contact the Customer Care Team, Commission for Regulation of Utilities for a decision.

We will provide you with a complaints reference number that you can quote to the CRU.

CRU contact details are:

Commission for Regulation of Utilities,

The Exchange,
Belgard Square North,



Tel: 01 400 0800