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.

Views reference
Modification status
ID Name Status Last Updated Sort ascending
PM098 PM098: STCP18-4 Process Improvement Process Administration Improvements Concluded
PM0107 PM0107: -01 System Performance Monitoring – development of a new STCP Concluded
PM0118 Inclusion of NGET as an applicable TO entity within STCP11-4 Concluded
CM083 CM083: Workgroup Quoracy Improvements Concluded
PM0133 - Pathfinder feasibility studies PM0133 - Pathfinder feasibility studies Current
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
PM082 PM082: STCP19-4 - Concerns raised by Generators over Commissioning and De-commission of Transmission Assets Concluded
PM099 PM099: STCP13-2 'SIF and LARF Methodology' Concluded
PM0108 PM0108: STCP 11.4 Enhanced Service Provision Concluded
CM076 CM076 - STC change to reflect the terms of the UK’s departure from the EU 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.

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.