System Operator Transmission Owner Code

The System Operator Transmission Owner Code (STC) defines the relationship between the transmission system owners and the system operator.

ID Name Status Last updated Sort ascending
PM0103 National Grid Legal Separation - consequential changes to STCPs to reference NGESO and SO/TO interface design changes to STCPs Current 26 Jul 2018
PM0102 National Grid Legal Separation - consequential changes to STCPs to reference NGESO Current 26 Jul 2018
CM069 National Grid Legal Separation - consequential changes to incorporate NGESO in STC Sections & Schedules Current 9 Jul 2018
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 Current 9 Jul 2018
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. Current 9 Jul 2018
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 Current 9 Jul 2018
CM065 National Grid Legal Separation - consequential changes to reference NGESO in STC Section C and changes to Outage Planning Data Timescales. Current 9 Jul 2018
CM064 CM064 'Update to the STC Schedule 4,Boundaries of Influence' Current 6 Jun 2018
CM050 CM050: Code Governance Review 2 - Self Governance and Appeals Concluded 31 May 2018
CM051 CM051: Code Governance Review Phase 2 - Significant Code Review Concluded 31 May 2018