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.
| ID | Name | Status | Last Updated Sort ascending | |
|---|---|---|---|---|
| CM075 | Clarification on TO Final Sums definition | Implemented | ||
| CM074 | CM074 'Modify the definition of Force Majeure' | Withdrawn | ||
| CM072 | CM072: STC changes in the event the UK leaves the EU without an agreement | Withdrawn | ||
| CM073 | CM073: Critical Friend review period for submission of new Modifications | Implemented | ||
| CM071 | CM071: Housekeeping amendment to definition of National Grid Electricity System Operator (NGESO) for legal separation on 1 April 2019 | Implemented | ||
| CM069 | CM069: National Grid Legal Separation - consequential changes to incorporate NGESO in STC Sections & Schedules | Implemented | ||
| CM068 | CM068: National Grid Legal Separation - consequential changes to reference NGESO in STC Section D and to provide clarity that only Transmission Owners create Transmission Investment Plans | Implemented | ||
| CM067 | CM067: National Grid Legal Separation - consequential changes to reference NGESO into STC Section B and changes to STC Modification Panel membership to add NGESO as Member | Implemented | ||
| CM066 | CM066: National Grid Legal Separation - consequential changes to reference NGESO in STC Section G and to place Nuclear Site Licence Provisions Agreement obligations on NGET for England and Wales | Implemented | ||
| CM065 | CM065: National Grid Legal Separation - consequential changes to reference NGESO in STC Section C and changes to Outage Planning Data Timescales | Implemented |
More about modifications
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.
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.