STC Code Documents

All documents relating to the STC are available here to download. Including the latest version of the code itself, in full, and details of any revisions.

For more information about the code, please contact [email protected] 

STC Documents

Name Published
STC Index of Revisions v22 15 November 2024
Section J Interpretation and Definitions v26
Complete STC - 15 November 2024
Schedule 2 List of STC Procedures v49
Section C Transmission Services and Operations v12
Section K - Technical Design and Operational Criteria and Performance Requirement for Offshore Transmission Systems
Section D - Planning Co-ordination v15
Schedule 3 - Information and Data Exchange Specification
Schedule 9 - TO Construction Terms v11
Schedule 10 - Charges v5 25 April 2023

STC Procedures

Name Published
STCP04-4 Provision of Asset Operational Information
STCP18-7 issue 001 Queue Management Co-ordination Procedure
STCP19-3 Operational Notification and Compliance Testing Issue
STCP18-01 Connection and Mod Application Issue 0013 04 March 2024
STCP11-1 Outage Planning Issue 0010 12 April 2024
STCP06-2 De-synchronised Island Management Issue 007 04 March 2024
STCP06-1 System Restoration Issue 008 04 March 2024
STCP04-2 Real time Datalink Management Issue 008 04 March 2024
STCP01-1 Operational Switching Issue 0012
STCP16-1 Investment Planning Issue 009