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
CM053 CM053: Code Governance Review 2 - Send Back Process Concluded
PM077 PM077: Outage Change Management Concluded
PM094 PM094: Amendment to STCP18-2 Process Improvement Process Administration Improvements Concluded
PM0120 PM0120: Connections Triggering Distribution Impact Assessment Current
CM091 - Implementation of Emergency and Restoration Code Phase II CM091 - Implementation of Emergency and Restoration Code Phase II Current
CM054 CM054: Code Governance Review - Fast Track Self Governance and Objections Concluded
PM078 PM078: Modification of STCP01-1Appendix D to provide a trigger phrase for controlling the power flow on a HV DC transmission line Concluded
PM095 PM095: STCP 18-3: Process Improvement Concluded
PM0124 PM0124: Enduring Expansion Constant & Expansion Factor Review Current
CM055 CM055: Consequential changes following Implementation of the Third Package and other miscellaneous changes 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.