Industry codes

The industry codes underpin the electricity and gas wholesale and retail markets. Licensees are required to maintain, become party to, or comply with the industry codes in accordance with the conditions of their licence.

Code Administrators are the point of contact for each code where users can find out information about that code, including how to become a party to the code (if appropriate) and the rules on modifying the code. Code Administrators have committed to operating their code administration functions in accordance with the Code Administration Code of Practice (CACoP).

Code Administrators, as part of their role, act as Critical Friends to code users. The role of the Critical Friend is described in CACoP as a Code Administrator who provides support to all with an interest in the code modification process and consumer representatives. The Code Administrators have identified a list of the Top 5 activities of a Critical Friend.

The Code Administrators have developed a Central Modifications Register which details all current modifications across the eleven codes. This spreadsheet is managed by the Code Administrators and updated by them monthly.

The codes define the terms under which industry participants can access the electricity and gas networks. The table below lists the codes and contact details for them.

Code Type Code Administrator Website
Balancing and Settlement Code (BSC) Electricity Elexon
Connection Use of System Code (CUSC) Electricity

National Grid
Distribution Use of System Agreement (DCUSA) Electricity Electralink
Master Registration Agreement Electricity Gemserv
Grid Code Electricity National Grid
Distribution Code Electricity Energy Networks Association
System Operator - Transmission Operator Code (STC) Electricity National Grid

Uniform Network Code (UNC) Gas Joint Office of Gas Transporters
Independent Gas Transporter UNC (iGT UNC) Gas Gemserv
Supply Point Administration Agreement (SPAA) Gas Electralink
Smart Energy Code (SEC) Gas and Electricity SECAS
Retail Energy Code (REC) Gas and Electricity REC

Publications and updates

  • Published: 30th Jun 2008
  • Decisions
  • 1 Associated documents
This document sets out Ofgem's Final Clarification and Guidance on the treatment of greenhouse gas emissions under the industry code objectives.

  • Published: 15th Apr 2008
  • Closed: 30th Apr 2008
  • Consultations and responses
  • 14 Associated documents
Proposed Guidance on the interpretation of the economic and effeciency objective for industry codes to factor in the cost of carbon resulting from code modification proposals - open letter consultation.

  • Published: 25th Jun 2007
  • Other
  • 1 Associated documents
See the RbD Issues Log.

  • Published: 31st Mar 2006
  • Consultations and responses
  • 16 Associated documents
See the Review of Reconciliation by Difference (RBD).

  • Published: 30th Jun 2005
  • Reports and plans
  • 1 Associated documents
See the draft guidelines for determining disputes and complaints arising under the European Directives 2003/54/EC and 2003/55/EC.