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
GC0052 GC0052: Assigning Detailed Planning Data DPD References Concluded
GC0061 GC0061: Amendments Required to Implement the Electricity Supply Emergency Code ESEC Concluded
GC0062 GC0062: Fault Ride Through Concluded
GC0063 GC0063: Power Available Concluded
GC0065 GC0065: Consequential Changes from STC Modification CA049 Concluded
GC0068 GC0068: Grid Code New and Revised Unit Data and Instructions Concluded
GC0071 GC0071: Code Governance Review Phase 2 Code Administrator and Code Administration Code of Practice Concluded
GC0072 GC0072: Code Governance Review (Phase 2): Code Administrator and Code Administration Code of Practice Concluded
GC0073 GC0073: Code Governance Review Phase 2 Send Back Process Concluded
GC0074 GC0074: GCRP Membership 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.