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
Schedule 10 - Charges v6	8 Apr 2025
Schedule 4 - Criteria for Assessing Those Transmission Systems Affected by a Construction Project v4	8 Apr 2025
Section E - Payments and Billing v6	8 Apr 2025
Section H - Dispute Resolution v12	3 Apr 2025
Schedule A - List of Parties	14 Mar 2025
Section K - Technical Design and Operational Criteria and Performance Requirement for Offshore Transmission Systems	15 Nov 2024
Schedule 2 - List of STC Procedures v49	13 Jun 2024
Schedule 3 - Information and Data Exchange Specification v10	2 Mar 2024
Schedule 9 - TO Construction Terms v11	1 Dec 2023
Schedule 5 - NES0 Connection Application v8	25 Apr 2023

STC Procedures

Name	Published
STCP 27-1 Issue 004 System Performance Monitoring	26 Nov 2025
STCP 25-3 Issue 004 Fast Track Self-Governance Process	26 Nov 2025
STCP 25-2 Issue 004 Send Back Process	26 Nov 2025
STCP 25 -1 Issue 004 Significant Code Review Process	26 Nov 2025
STCP 24-1 Issue 007 Revenue Forecast Information Provision	26 Nov 2025
STCP 23-1 Issue 004 Party Entry Process	26 Nov 2025
STCP 22-1 Issue 006 Production of Models for GB System	26 Nov 2025
STCP 21-2 Issue 003 Network Asset Risk Metric (NARM) Data Exchange	26 Nov 2025
STCP 21-1 Issue 006 Network Options Assessment	26 Nov 2025
STCP 20-1 Issue 007 Electricity Ten Year Statement	26 Nov 2025

STC Application Documents