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.

Modification status
ID Name Status Last Updated Sort ascending
GC0103 GC0103: The introduction of harmonised Applicable Electrical Standards in GB to ensure compliance with the EU Connection Codes Current
GC0044 GC0044: Grid Code Changes Resulting From BSC Modification P276 Concluded
GC0080 GC0080: Relevant Electrical Standards (RES) Updates Concluded
GC0048 GC0048: Joint GCRP DCRP Workgroup on GB Application of RfG Concluded
GC0083 GC0083: European Transparency Regulation Implementation Concluded
GC0050 GC0050: Demand Control OC6 Concluded
GC0086 GC0086: Open Governance Concluded
GC0119 GC0119: Post Open Governance Implementation Housekeeping Changes Concluded
GC0167 GC0167: Material and Non Material Grid Code Changes Withdrawn
GC0052 GC0052: Assigning Detailed Planning Data DPD References 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.