Grid Code Modifications

You can raise a modification – or mod – when you want to propose a change to any part of the Grid Code. 

For more information, please contact [email protected]

Search for any current or concluded modifications by name or ID. You can sort mods by ID, name, status or date of update. Or filter according to status.

IDNameAffectedStatusLast updated
GC0153GC0153: Making the Grid Code Gender Neutral Current 29 Nov 2021
GC0152GC0152: Updating the Grid Code governance process to ensure we capture network code on electricity emergency and restoration (NCER) change process for Article 4 Terms and Conditions (T&Cs) Current 29 Nov 2021
GC0151GC0151: Grid Code Compliance with Fault Ride Through Requirements Concluded 29 Nov 2021
GC0150GC0150 -Housekeeping change post- GC0147 implementation Concluded 3 Nov 2021
GC0149GC0149 - Grid Code changes to reflect the terms of the UK’s departure from the EU Concluded 9 Aug 2021
GC0148GC0148: Implementation of EU Emergency and Restoration Code Phase II Current 22 Nov 2021
GC0147GC0147: Last resort disconnection of Embedded Generation – enduring solution Concluded 9 Aug 2021
GC0146GC0146: Solutions for frequency control of Power Park Modules Current 14 Oct 2021
GC0144GC0144: Alignment of Market Suspension Rights to the EU Emergency and Restoration Code Article 35.1(b) Concluded 26 May 2021
GC0145GC0145: Updating the Grid Code to include the Manually Activated Reserve Initiative (MARI) Concluded 30 Apr 2021