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The Grid Code


At privatisation and as required by the transmission licence, National Grid implemented the Grid Code, which is designed to permit the development, maintenance and operation of an efficient, co-ordinated and economical system for the transmission of electricity, to facilitate competition in the generation and supply of electricity and to promote the security and efficiency of the power system as a whole. National Grid and users of its transmission system are required to comply with the Grid Code.

The Grid Code available here is the designated revised code under the Offshore Transmission regime and is effective from 24th June 2009 (Offshore Transmission Go-Active date).  Any changes to the Grid Code are subject to the approval of the Authority.

 This link will take you to our Code Summaries page which includes a Summary of the Grid Code