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TCN Successfully Restores National Grid Following Partial System Failure

The Transmission Company of Nigeria (TCN) said it has completed restoration of the national grid after a partial system failure at approximately 11:21 a.m. on Sunday, in a statement late Sunday by its General Manager of Public Affairs, Ndidi Mbah said.

Mbah highlighted that immediate efforts were undertaken by TCN to restore the affected section of the grid.

During the incident, Ibom power was fed to the Eket, Ekim, Itu, and Uyo transmission substations. Mbah clarified that the partial disturbance occurred amidst a total generation of 3,901.25 megawatts (MW) at 8 a.m., just over three hours before the partial collapse.

Mbah emphasised the persistence of low power generation since January, exacerbated by lingering gas constraints.

The National Control Centre’s data from the Internet of Things (IoT) revealed that, just before the disturbance, Sapele, Steam, and Egbin Substations lost 29.32 MW and 343.84 MW at 11:20:14 hrs and 11:20:17 hrs, respectively, totaling 373.16 MW.

The combination of low power generation and gas constraints contributed to the imbalance that led to the partial system disturbance.

Mbah underscored the critical importance of sufficient gas supply to power generating stations for grid stability, acknowledging that gas constraints continue to impact flexibility and stability.

She further mentioned that investigating the cause of the tripping of Sapele Steam and Egbin power-generating units is a priority for TCN. Ensuring ample generation capacity is crucial for effective grid management during sudden generation losses, such as the recent disturbance.

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