National Gas Transmission owns and operates the gas National Transmission System (NTS) — a 5,000-mile pipeline network that transports gas from terminals and ports to every part of Britain.
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Exit Capacity Substitution Methodology Statement (Informal Consultation) v3.1 - Effective 1 May 2014
Exit Capacity Substitution Methodology Statement (Approved) v6.0 - Effective 17 January 2017
Substituton Methodologies - Ofgem Decision Letter (January 2017)
Consultation Reponse - NGD (November 2016)
Consultation Reponse - WWU (November 2016)
ExCS v5.1 - Comparison v5.1 to v5.0
Consultation Cover Letter (EU - April 2017)
Exit Capacity Substitution Methodology Statement (Consultation) v6.1 - Effective 31 July 2017
ExCS v6.1 - Comparison v6.1 to v6.0
GRDM 2015 - Ofgem Approval Letter