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.

Modification status
ID Name Status Last Updated Sort ascending Link to modification
CM055 CM055: Consequential changes following Implementation of the Third Package and other miscellaneous changes Concluded view
CM056 CM056: Reporting requirements under EU Transparency Regulation Concluded view
CM057 CM057: Amendment of Section D as a result of Integrated Transmission Planning and Regulation (ITPR) project Concluded view
CM058 CM058: Amendment of Schedule 3 to reflect the changes introduced by Integrated Transmission Planning and Regulation (ITPR), namely the introduction of the Network Options Assessment Concluded view
CM059 CM059: Changes to Section C and H following OFGEM Response to Adjudication Request Concluded view
CMFT060 CMFT060: This proposal seeks to modify the System Operator Transmission Owner Code (STC) to reflect inconsistencies identified by Ofgem in the legal drafting changes under Code Governance Review Phase 2 in Section B of the STC Concluded view
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 view
CM062 CM062: This proposal seeks to implement the license changes to the STC arising from Ofgem's Code Governance Review (Phase 3) Concluded view
PA066 PA066: STCP19-3 Clarification of Transmission System Boundary Point Registration with Elexon Concluded view
PM070 PM070: Update STCP04-6 to add IEC60870-5-101 Communication Protocol 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.

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.

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.