Guidelines on the Procedures for Technical Audit of the Transmission System and Network Data Validation

The Nigerian Electricity Regulatory Commission (NERC) hereby notifies stakeholders in the Nigerian Electricity Supply Industry (NESI) and the general public that it has issued the Guidelines on the Procedures for Technical Audit of the Transmission System and Network Data Validation 2026, pursuant to Sections 34 and 226 of the Electricity Act, 2023 as well as Section 7.2.2 of the Grid Code.

The Guidelines, effective 20 July 2026, establish a transparent, uniform and standardised framework for conducting periodic technical audits of Nigeria's electricity transmission system and validating transmission network data to enhance the reliability, safety, security and operational efficiency of the national grid.

Key provisions of the Guidelines:

Apply to the Nigerian Independent System Operator (NISO) and all licensed Transmission Service Providers (TSPs) operating within the Nigerian Electricity Supply Industry (NESI).

Require NISO to engage suitably qualified consultants to conduct a comprehensive technical audit of the 330kV and 132kV transmission network at least once every five (5) years, or as otherwise directed by the Commission.

Mandate TSP to provide full access to transmission facilities, operational records and other relevant information required for the audit.

Require TSP to prepare and implement Performance Improvement Plans based on the audit findings and submit annual implementation progress reports to the Commission.

Provide minimum competency requirements, scope of work and methodology for the engagement of consultants undertaking the technical audit.

Stakeholders are encouraged to familiarise themselves with the provisions of the Guidelines which are available on the NERC website www.nerc.gov.ng and ensure full compliance.