The Transmission Company of Nigeria (TCN) has stated that the grid collapse that occurred at 11:34 on Wednesday was caused by the tripping of the Omotosho-Ikeja West 330kV transmission line.
In a statement, Ndidi Mbah, TCN’s General Manager for Public Affairs, explained that at the time, the Benin-Egbin 330kV line was undergoing a scheduled outage for mechanical line tracing.
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“The tripping resulted in a cascaded outage affecting the Lagos, Abuja, and Osogbo axis. However, all other parts of the grid remained unaffected, contrary to reports of a grid collapse in the media.”
She stated that the line had been successfully repaired, and normal power supply had been fully reinstated to the affected areas.
“We assure Nigerians of our commitment to efficient delivery of bulk power across the nation as we continue to implement measures to enhance the stability of the national grid.”
The grid faced a supply disruption on Wednesday, with the Independent System Operator (ISO), an independent branch of the Transmission Company of Nigeria, reporting a drop in the average electricity supply. The supply fell from 4,064.70 megawatts around 11 a.m. to 1,222.78 megawatts by 12 p.m.
The Abuja Electricity Distribution Company (AEDC) confirmed the grid disturbance, stating that it stopped receiving electricity supply in its coverage area at 11:38 a.m.
In a statement posted on its official X account, it said: “We regret to inform you that a system disturbance occurred on the national grid at 11:34 am today causing power outage across our franchise areas.
“While gradual restoration of power supply has commenced, please be assured that we are working closely with relevant stakeholders to fully restore electricity as soon as the grid is stabilised.
“Thank you for your understanding and patience as we work to serve you better.”
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