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
CM094 - Amendment to Bi-annual estimate provisions CM094 - Amendment to Bi-annual estimate provisions Current
CM095 CM095 - Implementing Connections Reform Current
CM096 Application of Gate 2 Criteria to existing contracted background CM096 Application of Gate 2 Criteria to existing contracted background Current
PM0139 - STCP 19-6 Update: Updating submission dates for application fee charges PM0139 - STCP 19-6 Update: Updating submission dates for application fee charges Implemented
PM0138 - Replacing references to “TOGA” within four STCPs PM0138 - Replacing references to “TOGA” within four STCPs Implemented
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
PM0132 PM​0132​: ​​Implementation of Emergency and Restoration Code Phase II​ Implemented
PM070 PM070: Update STCP04-6 to add IEC60870-5-101 Communication Protocol Concluded
PM088 PM088: Scottish Black Start Restoration Working Group Concluded
PM0103 PM0103: National Grid Legal Separation - consequential changes to STCPs to reference NGESO and SO/TO interface design changes to STCPs 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.