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.

Views reference
Modification status
ID Name Sort descending Status Last Updated
GC0151 GC0151: Grid Code Compliance with Fault Ride Through Requirements Concluded
GC0152 GC0152: 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) Concluded
GC0153 GC0153: Making the Grid Code Gender Neutral Concluded
GC0154 GC0154: Incorporation of interconnector ramping requirements into the Grid Code as per SOGL Article 119 Current
GC0155 GC0155: Clarification of Fault Ride Through Technical Requirements Current
GC0156 GC0156: Facilitating the Implementation of the Electricity System Restoration Standard Implemented
GC0157 GC0157: Grid Code Housekeeping modification Concluded
GC0158 GC0158: Reversing unimplemented aspects of GC0068 Concluded
GC0159 GC0159: Introducing Competitively Appointed Transmission Owners Current
GC0160 GC0160 - Grid Code Changes for BSC Mod P448: "Protecting Generators subject to Firm Load Shedding during a Gas Supply Emergency from excessive Imbalance Charges" Concluded

More about modifications

Modification Tracker

Our Tracker gives you the latest details on current code modifications including the purpose and the stakeholders it affects, as well as panel comments and where it is in the review process. It is published on the 7th (or next working day) of each month.

Modification Proposal Form

If you're thinking about raising a modification, please get in touch with us. Our experts can give you advice on your Proposal, explain how the modification process works and help to answer any questions you may have. When we receive your Proposal, we'll check it through and work together to make sure it's easy to understand.

Calendar

Once you've been in touch and are ready to write your Proposal paper, send it to us by the monthly modification submission date which you can find on our Calendar.