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
CM096 CM096 Application of Gate 2 Criteria to existing contracted background Current
CM095 CM095 - Implementing Connections Reform Current
CM079 CM079: Consideration of STC/STCP changes in relation to CMP330/374 Current
PM0136 - Introducing Connections process to facilitate Competitively Appointed Transmission Owners PM0136 - Introducing Connections process to facilitate Competitively Appointed Transmission Owners Current
CM099 CM099 - Removing references to “Fax” and “Facsimile” within the STC Current
PM0126 PM0126: Transmission Impact Assessment Process in relation to CMP298 Implemented
CM094 CM094 - Amendment to Bi-annual estimate provisions Concluded
CM098 CM098: Updating STC Arrangements to replacing the Electricity Arbitration Association with the London Court of International Arbitration Current
CM097 CM097:Electromagnetic Transient (EMT) and Root Mean Square (RMS) Model Submission for Transmission Owners (TOs) Current
PM0127 PM0127: Improving TNUoS Predictability through Increased Notice of the Target Revenue & Inputs used in the TNUoS Tariff Setting Process Withdrawn

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.