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 Sort descending Status Last Updated
CM078 CM078: Connections Triggering Distribution Impact Assessment Current
CM079 CM079: Consideration of STC/STCP changes in relation to CMP330/374 Current
CM080 CM080: Transmission Impact Assessment Process Concluded
CM081 CM081 - Making STC Gender Neutral Concluded
CM082 CM082: STC Governance Improvements Concluded
CM083 CM083: Workgroup Quoracy Improvements Concluded
CM084 CM084: Clarify STCP modification approach for cross-code changes Concluded
CM085 CM085: To clarify OFTO reactive power requirements at <20% output Current
CM086 CM086: Introducing Competitively Appointed Transmission Owners & Transmission Service Providers Current
CM087 CM087: Introducing Connections Process to facilitate Competitively Appointed Transmission Owners Current

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.