GC0182: Standardisation of Power Flow Metering Polarity

This modification aims to provide a unified standard for Power Flow Metering Polarity when data is sent to NESO. The standard will be in the format of a diagram and explanatory description.

Modification status:
Current - Code Administrator Consultation
Last updated:
06 October 2026

Code Administrator Contact: [email protected] 

Governance Route: Standard Governance modification with assessment by a Workgroup.

Impacts: Medium impact on Generators, Network Operators, Interconnectors, Non-embedded customers, Licence Exemptible Embedded Medium Power Station (LEEMPS). Low impact on NESO and Transmission Licensees. 

Code modification proposed by:
Thomas Goss