Grid Code Modifications
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.
| ID | Name | Status | Last Updated Sort ascending | |
|---|---|---|---|---|
| GC0109 | GC0109: Publication of the various GB electricity Warnings or Notices or Alerts or Declarations or Instructions or Directions etc. (“System Warning Alerts”) issued by or to the Network Operator(s). | Implemented | ||
| GC0149 | GC0149 - Grid Code changes to reflect the terms of the UK’s departure from the EU | Implemented | ||
| GC0144 | GC0144: Alignment of Market Suspension Rights to the EU Emergency and Restoration Code Article 35.1(b) | Implemented | ||
| GC0147 | GC0147: Last resort disconnection of Embedded Generation – enduring solution | Implemented | ||
| GC0136 | GC0136: Non-material changes to the Grid Code following implementation of the EU Connection Codes | Implemented | ||
| GC0130 | GC0130: OC2 Change for simplifying ‘output useable’ data submission and utilising REMIT data | Implemented | ||
| GC0131 | GC0131: ‘Quick Win’ Improvements to Grid Code Open Governance Arrangements | Implemented | ||
| GC0143 | GC0143: Last resort disconnection of Embedded Generation | Implemented | ||
| GC0110 | GC0110: LFSM-O compliance requirements for Type As and B PGMs | Implemented | ||
| GC0142 | GC0142: Adding Non-Standard Voltages to the Grid Code | Implemented |
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.
Raise a modification
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.