Northern Ireland

Learn about our Northern Ireland network

Gas Networks Ireland’s activities in Northern Ireland are carried out by GNI (UK) Limited. This includes the construction of gas networks linking ten towns to the upstream network in Scotland, an investment of GB£200 million.

Read more below.

Interconnection System
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Our Northern Ireland network

A wholly owned subsidiary of Gas Networks Ireland, GNI (UK) Ltd operates, and part owns the high-pressure pipelines running from Moffat, in Scotland, to Ireland and the Isle of Man, via subsea pipelines which supply the Republic of Ireland, Northern Ireland and Isle of Man.  It also owns and operates two pipelines in Northern Ireland, the South North pipeline running from Gormanston, Co. Meath to Co. Antrim and the North West pipeline running from Carrickfergus to the Coolkeeragh power station.   GNI (UK) Ltd is regulated by the Commission for Regulation of Utilities in relation to the Republic of Ireland network and the Utility Regulator in Northern Ireland and Ofgem, in the UK.

The Gas Market Operator for Northern Ireland (“GMO NI”) operates the natural gas transmission market in NI on behalf of the four-gas transmission operator (“TSOs”), GNI(UK), Premier Transmission Limited (“PTL”), Belfast Gas Transmission Limited (“BGTL”) and West Transmission Limited (“WTL”).

In October 2022, GNI (UK) Ltd recruited the role of Northern Ireland Energy Transition Manager, to support its engagement with the other gas network operators and key stakeholders on energy transition matters, as well as engage with UR on requests for funding for specific activities.

GNI (UK) Limited, registered number 2827969 is registered in England and Wales at c/o TMF 13th Floor, One Angel Court, London, EC2R 7HJ, United Kingdom.