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 Status Last Updated
GC0140 GC0140: Grid Code Sandbox: enabling derogation from certain obligations to support small-scale trials of innovative propositions Current
GC0139 GC0139: Enhanced Planning-Data Exchange to Facilitate Whole System Planning Current
GC0138 GC0138: Compliance process technical improvements (EU and GB User) Concluded
GC0137 GC0137: Minimum Specification Required for Provision of GB Grid Forming (GBGF) Capability (formerly Virtual Synchronous Machine/VSM Capability) Concluded
GC0136 GC0136: Non-material changes to the Grid Code following implementation of the EU Connection Codes Concluded
GC0135 GC0135 - Removal of Redundant Provisions Concluded
GC0134 GC0134: Removing the telephony requirements for small, distributed and aggregated market participants who are active in the Balancing Mechanism Concluded
GC0133 GC0133: Timely informing of the GB NETS System State condition Concluded
GC0132 GC0132: Updating the Grid Code governance process to ensure we capture EBGL change process for Article 18 Terms and Conditions (T&Cs) Concluded
GC0131 GC0131: ‘Quick Win’ Improvements to Grid Code Open Governance Arrangements 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.