Entry and exit capacity

National Grid Gas (NGG) is the Transmission Owner (TO) and System Operator (SO) of the GB national transmission system (NTS).  Under its TO role it is obliged to ensure that adequate NTS capacity is available to support NTS customers gas flow requirements. 

To manage this process NGG makes available NTS entry capacity and NTS exit capacity, which NTS gas shippers are obliged to book in order to have the right to flow gas to and from the system on behalf of customers.  

Entry capacity provides the daily right to flow gas into the system up to an agreed flow rate. Exit capacity provides the right to offtake gas from the NTS up to a deemed flow rate.

Entry capacity is made available in quarterly, monthly or daily strips via a suite of long and short term reserve price auctions.  Exit capacity is made available in annual, and daily quantities, principally via an annual application window, although short term capacity rights can be acquired when capacity is available at the day ahead and within day stage.

Publications and updates

  • Published: 4th Oct 2017
  • Decisions
  • 2 Associated documents
This Section 23 Notice revises the amount of obligated entry capacity to be made available at the Fleetwood National Transmission System point.

  • Published: 29th Aug 2017
  • Closed: 26th Sep 2017
  • Consultations and responses
  • 5 Associated documents
The Section 23 Notice seeks views on changes to National Grid Gas's transporter licence to reduce the amount of obligated entry capacity offered at Fleetwood.

  • Published: 5th Jul 2017
  • Decisions
  • 1 Associated documents
This letter approves National Grid Gas plc’s changes to five gas capacity methodology statements.

  • Published: 19th Jan 2017
  • Decisions
  • 2 Associated documents
This document consents to National Grid Gas submitting the Capacity Release Methodology Statements and Capacity Substitution Methodology Statements without an Independent Examiner report.

  • Published: 13th Jan 2017
  • Decisions
  • 1 Associated documents
This letter explains our reasons why we consider changes proposed by National Grid Gas are necessary to the Substitution Methodology Statements.

  • Published: 14th Sep 2016
  • Decisions
  • 2 Associated documents
This document consents to National Grid Gas submitting the entry and exit capacity substitution methodology statements without an Independent Examiner report.

  • Published: 21st Oct 2015
  • Decisions
  • 1 Associated documents
Approval of National Grid Gas' revised Capacity Methodology Statements to incorporate elements of CAM Network Code including a direction to make further amendments

  • Published: 1st May 2015
  • Decisions
  • 3 Associated documents
Our decision on changes to National Grid Gas Transmission’s gas transporter licence to terminate Permit Arrangements and adjust the revenue earned from Permit Arrangements for the period 1 April 2013 – 31 March 2015.

  • Published: 4th Mar 2015
  • Closed: 1st Apr 2015
  • Consultations and responses
  • 4 Associated documents
The decision letter and Notice outline changes to National Grid Gas Transmission’s gas transporter licence to terminate Permit Arrangements and adjust the revenue earned from Permit Arrangements for the period 1 April 2013 – 31 March 2015.

  • Published: 27th Feb 2015
  • Decisions
  • 1 Associated documents
This document approves National Grid Gas Transmission’s changes to the Capacity Methodology Statements to incorporate the Planning and Advanced Reservation of Capacity Agreement process.

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