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
PM0124 PM0124: Enduring Expansion Constant & Expansion Factor Review Current
PM0131 - STCP14-1 Update: Incorporating revised TO licence special conditions terminology PM0131 - STCP14-1 Update: Incorporating revised TO licence special conditions terminology Current
CM056 CM056: Reporting requirements under EU Transparency Regulation Concluded
PM080 PM080: Management of Active Network Management Schemes Concluded
PM097 PM097: sTCP18-1 Process Improvement Process Administration Improvements Concluded
PM0106 PM0106: National Grid Legal Separation - consequential changes to STCP19-3 to reference NGESO Concluded
CM075 Clarification on TO Final Sums definition Concluded
PM0125 PM0125 - STCP01-1 Amendment to Allow Electronic Switching Instruction Concluded
CM057 CM057: Amendment of Section D as a result of Integrated Transmission Planning and Regulation (ITPR) project Concluded
PM081 PM081: Detailed reporting requirements under Article 10.1c of EU Transparency Regulation Commission Regulation No 543 2013 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.