Third party access exemptions

Open and non-discriminatory access to the networks by those who do not own the physical network infrastructure, known as third party access (TPA), is fundamental in facilitating greater competition and making energy markets work effectively.

Owners and operators of the electricity networks, the transmission system operator (SO) and the distribution system operators (DSOs), and the owners/ operators of interconnectors, are obliged by European legislation and related licence conditions to provide non-discriminatory access to their lines, pipes and other facilities to third parties.

Under EU legislation, interconnectors, storage facilities and LNG import terminals may apply for an exemption from being required to offer access to third parties. This route is intended to promote the development of such facilities within GB.

Ofgem considers each request for exemption on a case by case basis to see if certain criteria set out in legislation  are met. We have already taken a number of decisions to provide exemptions.

As part of the granting of an exemption we may, and in some circumstances are  required to, impose certain conditions on the operation of the facility (for example, the exemption may be limited to a certain time period).    

The GB Markets team oversees the process for considering applications for exemption from the Directive Regulated Third Party Access (RTPA) requirements. This largely covers the following types of infrastructure development:

  • gas and electricity interconnectors to other countries
  • gas storage facilities
  • Liquefied Natural Gas (LNG) importation facilities.


Publications and updates

  • Published: 3rd May 2007
  • Closed: 14th Jun 2007
  • Consultations and responses
  • 9 Associated documents
Statoil UK Ltd's application for an exemption from Section 19b of the Gas Act 1986.

  • Published: 30th Apr 2007
  • Decisions
  • 6 Associated documents
This letter sets out Ofgem's final view on GLNG’s application for an exemption from regulated third party access (rTPA) requirements for Grain 3.

  • Published: 1st Mar 2007
  • Closed: 1st Mar 2007
  • Consultations and responses
  • 10 Associated documents
38/07 3rd Party Proposal: Storage Information at LNG Importation Facilities. Modification Reference Number UNC 104, Impact Assessment

  • Published: 5th Jan 2007
  • Closed: 5th Jan 2007
  • Consultations and responses
  • 1 Associated documents

  • Published: 14th Dec 2006
  • Consultations and responses
  • 3 Associated documents
section 19C(2) of the Gas Act requesting an exemption from section 19D of the Gas Act(regulated Third Party Access) in relation to phase 3 of its expansion project at the Isle of Grain LNG importation terminal.

  • Published: 5th Sep 2006
  • Consultations and responses
  • 8 Associated documents
The purpose of this document is to invite views from interested parties on Ofgem's initial view that an exemption from regulated third party access requirements should be granted to BritNed for the construction of an electricity interconnector...

  • Published: 3rd Aug 2006
  • Consultations and responses
  • 1 Associated documents
Open letter - Use it or Lose it arrangements at the Isle of Grain.

  • Published: 21st Jul 2006
  • Open letters and correspondence
  • 2 Associated documents