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
ID Name Status Last Updated Sort ascending
GC0048 GC0048: Joint GCRP DCRP Workgroup on GB Application of RfG Concluded
GC0083 GC0083: European Transparency Regulation Implementation Concluded
GC0101 GC0101: EU Connection Codes GB Implementation – Mod 2 Concluded
GC0118 GC0118: Modification to the Grid Code to accommodate the recent Distribution Code modification to Engineering Recommendation P28 –Voltage fluctuations and the connection of disturbing equipment to transmission systems and distribution networks in the UK Concluded
GC0134 GC0134: Removing the telephony requirements for small, distributed and aggregated market participants who are active in the Balancing Mechanism Concluded
GC0150 GC0150: Housekeeping change post- GC0147 implementation Concluded
GC0050 GC0050: Demand Control OC6 Concluded
GC0086 GC0086: Open Governance Concluded
GC0102 GC0102: EU Connection Codes GB Implementation – Mod 3 Concluded
GC0119 GC0119: Post Open Governance Implementation Housekeeping Changes 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.