Gas interconnectors

Gas interconnectors connect gas transmission systems from other countries to the National Transmission System (NTS) in England, Scotland and Wales.

There are currently three gas interconnectors which connect to the NTS. These are:

  • IUK interconnector to Belgium
  • Balgzand to Bacton Line (BBL) to the Netherlands
  • Moffat to the Republic of Ireland interconnector. 

We regulate the activities of the gas interconnector owners and operators through standard gas interconnector licence conditions to ensure that gas is transported competitively to the NTS and secure energy supplies are maintained.

Publications and updates

  • Published: 30th Jun 2014
  • Decisions
  • 2 Associated documents
This is the final decision of GEMA on a cross-border cost allocation (CBCA) application made by Gaslink Independent System Operator Ltd for the twinning of the onshore pipeline between Cluden and Brighouse Bay in Scotland. Ofgem has agreed that all costs...

  • Published: 29th Sep 2011
  • Decisions
  • 1 Associated documents
This document sets out Ofgem’s approval Bord Gáis Eireann’s amended Connected Systems Agreement with National Grid Gas to incorporate provisions for interruptible reverse flow at Moffat Interconnector

  • Published: 13th May 2010
  • Decisions
  • 1 Associated documents
This document sets out the Authority's reasons for approving BBL's proposed charging methodology.

  • Published: 3rd Nov 2008
  • Decisions
  • 1 Associated documents
This letter gives the Authority’s decision on the tariff methodology proposed by BBL for a non-physical reverse flow product

  • Published: 17th Jun 2008
  • Guidance
  • 1 Associated documents
The letter constitutes approval of BBL’s charging methodology for the purposes of SLC 10 of BBL’s interconnector licence

  • Published: 20th May 2008
  • Closed: 5th Jun 2008
  • Consultations & responses
  • 2 Associated documents
This is a consultation document on the approval of the tariffs for expansion capacity on the BBL Interconnector