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
CM097 CM097:Electromagnetic Transient (EMT) and Root Mean Square (RMS) Model Submission for Transmission Owners (TOs) Current
CM0101 CM0101 - Additional Definitions in Relation to PM0144 Implemented
CM087 CM087: Introducing Connections Process to facilitate Competitively Appointed Transmission Owners Current
CM086 CM086: Introducing Competitively Appointed Transmission Owners & Transmission Service Providers Current
CM098 CM098: Updating STC Arrangements to replacing the Electricity Arbitration Association with the London Court of International Arbitration Current
PM0146 - Emergency Control Centre Requirements PM0146 - Emergency Control Centre Requirements Implemented
PM0142 PM0142 Application of Gate 2 Criteria to existing contracted background Current
PM0143 Implementing Connection Reform PM0143 Implementing Connection Reform Current
PM0144 - Digital Communication System Integration PM0144 - Digital Communication System Integration Current
CM095 CM095 - Implementing Connections Reform 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.