Grid Collapse: Power Restoration Ongoing After Reported System Disturbance

The Nigerian Independent System Operator (NISO) has said restoration of power to the grid is currently ongoing as at the time of writing this report.
The operator was reported as saying that a disturbance has caused widespread outages, stating that it was caused by the tripping of a GenCo, resulting in a significant load drop that cascaded to other GenCos, leading to a system disturbance.
NISO said, “The Nigerian Independent System Operator (NISO) informs the general public that the national grid experienced a system disturbance at 11:20 hrs on 10/09/2025. The disturbance was caused by the tripping of a GenCo, resulting in a significant load drop, which cascaded to other GenCos, leading to a system disturbance.
“NISO immediately commenced restoration of the grid at 11:45 hrs, on Wednesday beginning with supply to Abuja from the Shiroro power plant, and substantial restoration has been achieved across the country.
“A full investigation into the immediate and remote causes is underway. The outcomes of the investigation report would determine the remedial and proactive actions to be taken to forestall future occurrences.”
We crave your indulgence to bear with us as restoration is still ongoing.”