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
PM0110 PM0110: Housekeeping Modification to align STCP18-1 -STCP18-6 with existing working practices Concluded
PM0122 PM0122: Compliance Testing Concluded
CM088 CM088 - Fault Ride Through Definition Concluded
PM0137 - Queue Management Co-ordination Procedure PM0137 - Queue Management Co-ordination Procedure Implemented
PM071 PM071: Code Governance Review 2: Significant Code Review Process Concluded
PM089 PM089: Amendment to STCP18-1 to include naming of BMU Concluded
CM065 CM065: National Grid Legal Separation - consequential changes to reference NGESO in STC Section C and changes to Outage Planning Data Timescales Concluded
PM0112 PM0112: Consequential STCP updates following implementation of RFG and HDVC into the GB Grid Code Concluded
CM081 CM081 - Making STC Gender Neutral Concluded
CM089 & CM091 CM089 & CM091 Implementation of the Electricity System Restoration Standard & Implementation of Emergency and Restoration Code Phase II 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.