STC Modifications
You can raise a modification – or mod – when you want to propose a change to any part of the STC.
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 | |
|---|---|---|---|---|
| PM0101 | PM0101: STCP09-1 'Update of procedure on ‘Safety Co-ordination between Parties’ covering HV proximity safety management and testing' | Concluded | ||
| PM0119 | PM0119: TNUoS Revenue Collection Risk Transfer | Concluded | ||
| CM061 | CM061: This proposal seeks to modify the System Operator Transmission Owner Code (STC) to align the elections process to those in the SQSS to allow for an 'Alternative OFTO Election Process' and extend the term of office from one year to two years | Concluded | ||
| PM085 | PM085: Modification to STCP04-3 to include a Power Available signal in Appendix B4.1 | Concluded | ||
| CM070 | CM070: Consequential STC Updates following implementation of RfG and HVDC into the GB Grid Code | Concluded | ||
| CM062 | CM062: This proposal seeks to implement the license changes to the STC arising from Ofgem's Code Governance Review (Phase 3) | Concluded | ||
| PM086 | PM086: Difficulties in meeting the current year ahead data submission timelines in STCP11-1 | Concluded | ||
| CM064 | CM064: Update to the STC Schedule 4,Boundaries of Influence | Concluded | ||
| PM0109 | PM0109: STCP27-01 Legal Separation Amendments | Concluded | ||
| PA066 | PA066: STCP19-3 Clarification of Transmission System Boundary Point Registration with Elexon | Concluded |
More about modifications
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.
STCP Modification Proposal Form
Download the STCP Proposal form, when we receive your Proposal, we'll check it through and work together to make sure it's easy to understand.
STC Modification Proposal Form
Download the STC Proposal form, when we receive your Proposal, we'll check it through and work together to make sure it's easy to understand.
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.