Industry codes and standards

About industry codes

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.

    The codes

    The table below lists the industry codes and their administrators.

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

    We publish our decisions relevant to each code in Industry code publications: code decisions and notices

    Code

    Type

    Code Administrator

    Website

    Balancing and Settlement Code (BSC) Electricity Elexon www.elexon.co.uk
    Connection Use of System Code (CUSC) Electricity

    National Grid ESO

    https://www.nationalgrideso.com/industry-information/codes
    Distribution Use of System Agreement (DCUSA) Electricity Electralink www.dcusa.co.uk
    Master Registration Agreement Electricity Gemserv www.mrasco.com
    Grid Code Electricity National Grid ESO https://www.nationalgrideso.com/industry-information/codes
    Distribution Code Electricity Energy Networks Association www.dcode.org.uk
    System Operator - Transmission Operator Code (STC) Electricity National Grid ESO

    https://www.nationalgrideso.com/industry-information/codes

    Uniform Network Code (UNC) Gas Joint Office of Gas Transporters www.gasgovernance.co.uk
    Independent Gas Transporter UNC (iGT UNC) Gas Gemserv www.igt-unc.co.uk
    Supply Point Administration Agreement (SPAA) Gas Electralink www.spaa.co.uk
    Smart Energy Code (SEC) Gas and Electricity SECAS www.smartenergycodecompany.co.uk
    Retail Energy Code (REC) Gas and Electricity REC https://www.retailenergycode.co.uk/

    In addition to the codes

    • Distribution Network Operators are required to provide a Data Transfer Service (DTS) to facilitate the electronic transfer of certain industry data - for more information see the Electralink DTS website
    • Energy suppliers that supply homes or microbusinesses are required to comply with the smart meter installation code of practice (SMICoP) - for more information see the SMICOP website.
    • Xoserve Limited provides a range of services to support the GB gas industry, for example billing services and managing and booking of capacity. Further information on the services is available on the Xoserve website.
    • GDAA - In addition to the above, certain electricity suppliers are also required to accede to the Green Deal Arrangements Agreement.