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
PM0139 - STCP 19-6 Update: Updating submission dates for application fee charges PM0139 - STCP 19-6 Update: Updating submission dates for application fee charges Current
PM0138 - Replacing references to “TOGA” within four STCPs PM0138 - Replacing references to “TOGA” within four STCPs Current
PM0137 - Queue Management Co-ordination Procedure PM0137 - Queue Management Co-ordination Procedure Implemented
CM094 - Amendment to Bi-annual estimate provisions CM094 - Amendment to Bi-annual estimate provisions Current
PM0136 - Introducing Connections process to facilitate Competitively Appointed Transmission Owners PM0136 - Introducing Connections process to facilitate Competitively Appointed Transmission Owners Current
PM0134 – Introducing Competitively Appointed Transmission Owners & Transmission Service Providers PM0134 – Introducing Competitively Appointed Transmission Owners & Transmission Service Providers Current
CM093 - Extending the principles of the User Commitment Methodology to Final Sums Methodology as a consequence of CUSC Modification – CMP417 CM093 - Extending the principles of the User Commitment Methodology to Final Sums Methodology as a consequence of CUSC Modification – CMP417 Current
PM0135: Proposed changes to STCP19-3 to improve the clarity around Compliance responsibilities between the Electricity System Operator and Transmission Owners PM0135: Proposed changes to STCP19-3 to improve the clarity around Compliance responsibilities between the Electricity System Operator and Transmission Owners Current
CM092: Schedule 9: TO Construction Terms Update CM092: Schedule 9:TO Construction Terms Update Concluded
PM0133 - Pathfinder feasibility studies PM0133 - Pathfinder feasibility studies 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.