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
PM0136 - Introducing Connections process to facilitate Competitively Appointed Transmission Owners PM0136 - Introducing Connections process to facilitate Competitively Appointed Transmission Owners Current
PM0135 PM0135: Proposed changes to STCP19-3 to improve the clarity around Compliance responsibilities between the Electricity System Operator and Transmission Owners Implemented
PM0132 PM​0132​: ​​Implementation of Emergency and Restoration Code Phase II​ Implemented
PM0131 PM0131 - STCP14-1 Update: Incorporating revised TO licence special conditions terminology Implemented
PM0128 PM0128 - Implementation of the Electricity System Restoration Standard Implemented
PM0123 PM0123 - Making the STCPs Gender Neutral Implemented
PM0122 PM0122: Compliance Testing Implemented
CM089 & CM091 CM089 & CM091 Implementation of the Electricity System Restoration Standard & Implementation of Emergency and Restoration Code Phase II Implemented
CM088 CM088 - Fault Ride Through Definition Concluded
CM084 CM084: Clarify STCP modification approach for cross-code changes Implemented

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.