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 Sort descending Name Status Last Updated
PM0102 PM0102: National Grid Legal Separation - consequential changes to STCPs to reference NGESO Concluded
PM0103 PM0103: National Grid Legal Separation - consequential changes to STCPs to reference NGESO and SO/TO interface design changes to STCPs Concluded
PM0104 PM0104: National Grid Legal Separation - consequential changes to STCP09-1 to reference NGESO Concluded
PM0105 PM0105: National Grid Legal Separation - consequential changes to STCP13-2 to reference NGESO Concluded
PM0106 PM0106: National Grid Legal Separation - consequential changes to STCP19-3 to reference NGESO Concluded
PM0107 PM0107: -01 System Performance Monitoring – development of a new STCP Concluded
PM0108 PM0108: STCP 11.4 Enhanced Service Provision Concluded
PM0109 PM0109: STCP27-01 Legal Separation Amendments Concluded
PM0110 PM0110: Housekeeping Modification to align STCP18-1 -STCP18-6 with existing working practices Concluded
PM0112 PM0112: Consequential STCP updates following implementation of RFG and HDVC into the GB Grid Code 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.