Nigeria’s electricity regulator has released new rules for how the country’s high-voltage power transmission system should be audited and how transmission network data should be checked, seeking to improve grid reliability, safety and operational performance.
NERC issues 2026 technical audit and data-validation guidelines
- The Nigerian Electricity Regulatory Commission (NERC) published the Guidelines for the Technical Audit of the Electricity Transmission System and Network Data Validation, 2026 via a notice posted on its official X account on Monday.
- NERC said the guidelines are issued under the Electricity Act, 2023—specifically Sections 34 and 226—and also reference Section 7.2.2 of the Grid Code.
- The regulator set the effective date as 20 July 2026, describing the move as part of creating a transparent framework for periodic technical audits across Nigeria’s transmission system.
- In NERC’s view, the framework is designed to strengthen the validation of transmission network data, which in turn is intended to enhance the reliability, safety, security, and day-to-day operational efficiency of the national grid.
Who must follow the guidelines
The guidelines apply to the Nigerian Independent System Operator (NISO) and to all licensed Transmission Service Providers (TSPs) operating within the Nigerian Electricity Supply Industry (NESI).
Audit frequency and scope
- NISO is required to carry out a comprehensive technical evaluation of the 330-kilovolt and 132-kilovolt transmission network at least once every five years.
- NERC also said the audit cadence can be adjusted if the commission issues other directions.
Key obligations for NISO and transmission operators
NERC’s notice outlines several operational requirements, including:
- NISO must hire suitably qualified consultants to perform a comprehensive technical audit of the 330kV and 132kV transmission network at least once every five years, or as otherwise directed by the commission.
- TSPs must grant full access to transmission facilities, operational records, and any other information needed to complete the audit.
- TSPs must develop and implement Performance Improvement Plans based on audit outcomes, and submit annual reports detailing progress on implementation to the commission.
- The guidelines include minimum competency requirements, along with defined scope of work and methodology standards for consultants conducting the technical audit.
Stakeholders urged to prepare for compliance
NERC encouraged stakeholders to review the guidelines, noting that they are available on the regulator’s website, nerc.gov.ng, and to ensure full compliance once the rules take effect from 20 July 2026.
