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 | Link to modification |
|---|---|---|---|---|
| GC0065 | GC0065: Consequential Changes from STC Modification CA049 | Concluded | view | |
| GC0068 | GC0068: Grid Code New and Revised Unit Data and Instructions | Concluded | view | |
| GC0071 | GC0071: Code Governance Review Phase 2 Code Administrator and Code Administration Code of Practice | Concluded | view | |
| GC0072 | GC0072: Code Governance Review (Phase 2): Code Administrator and Code Administration Code of Practice | Concluded | view | |
| GC0073 | GC0073: Code Governance Review Phase 2 Send Back Process | Concluded | view | |
| GC0074 | GC0074: GCRP Membership | Concluded | view | |
| GC0075 | GC0075: Hybrid Static Compensators | Concluded | view | |
| GC0076 | GC0076: Grid Code Limits on Rapid Voltage Changes | Concluded | view | |
| GC0077 | GC0077: Suppression of Sub-Synchronous Resonance from Series Capacitive Compensation | Concluded | view | |
| GC0080 | GC0080: Relevant Electrical Standards (RES) Updates | Concluded | view |
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.