Grid Code documents

All documents relating to the Grid Code are available here to download, including the latest version of the code in full and details of any revisions.

For more information about the code, please contact [email protected]

The Grid Code Update Packs

Name Published
Issue 6 Revision 43 - 27 July 2026 27 Jul 2026
Issue 6 Revision 42 - 09 July 2026 9 Jul 2026
Issue 6 Revision 41 - 05 June 2026 5 Jun 2026
Issue 6 Revision 40 - 29 May 2026 29 May 2026
Issue 6 Revision 39 - 07 May 2026 7 May 2026
Issue 6 Revision 38 - 05 May 2026 5 May 2026
Issue 6 Revision 37 - 13 April 2026 13 Apr 2026
Issue 6 Revision 36 - 12 December 2025 12 Dec 2025
Issue 6 Revision 35 - 04 December 2025 4 Dec 2025
Issue 6 Revision 34 - 05 November 2025 5 Nov 2025

The Grid Code Associated Documents

Name Published
Examples of generic BCA Appendix F templates 29 Jun 2026
Grid Forming Guidance Document - Issue 4 18 May 2026
Data Validation, Consistency and Defaulting Rules (2026 Update) 8 May 2026
Guidance Note Metering Polarity Convention for Power Flow Data - Issue 1 23 Apr 2026
Additional Guidance - Phase Angle Jump Performance for GBGF-I Plant Issue 1 2 Feb 2026
Guidance Note for Registered Control Point Operations - Issue 1 4 Dec 2025
Guidance on oscillation assessment for IBR - V2 9 Sep 2025
Guidance Notes for Co-location of Different Technologies - Issue 3 12 Jun 2025
Letter to industry dynamic modelling July 2024 30 Jul 2024
Guidance Notes for Electrical Storage Issue 4 3 Jul 2024