Customer helpline
03457 643 643

About us

Northern Ireland Electricity Networks (NIE Networks) owns the electricity transmission and distribution network and operates the electricity distribution network which transports electricity to over 840,000 customers.

What do we do?


Acquired by ESB in December 2010, NIE Networks remains an autonomous organisation with its own Board and management teams and separate regulation via the Utility Regulator.

Our transmission and distribution network consists of:

  • 45,000 kilometres of overhead lines and underground cables
  • 75,000 pole mounted transformers
  • 258 major substations

Northern Ireland Electricity Networks Limited - Registered in Northern Ireland - Registered No: NI26041
Registered Office: 120 Malone Road, Belfast, BT9 5HT