The Transmission Company of Nigeria has stated that the ongoing repair works in the power sector were responsible for Thursday’s grid collapse.
TCN spokesperson, Ndidi Mbah, disclosed this in a statement.
According to her, the national grid experienced a disturbance at approximately 11:29 am on Thursday, caused by a sudden rise in frequency from 50.33Hz to 51.44Hz.
“Recovery efforts began immediately, and the Abuja Axis was restored within 28 minutes. Recovery is still ongoing,” she said, even though many residents reported they had yet to receive power supply since the first grid collapse on Tuesday.
“The frequency spike was caused by issues encountered at one of TCN’s substations, which had to be shut down to prevent further complications. In addition, we are actively engaged in significant repair works on several critical transmission lines and substations.
“This includes the 330kV transmission lines along the Shiroro–Mando axis, major upgrades at the Jebba Transmission Substation, and the restoration of the second Ugwuaji–Apir 330kV transmission line.
“Furthermore, following the submission of the investigative report on the causes of previous grid collapses, we have begun addressing the identified weaknesses in the transmission system.
“Efforts are being made to close the gaps highlighted in the report and to enhance the overall stability and resilience of the grid. These efforts include both technical upgrades and strategic interventions based on the committee’s recommendations,” Mbah added.
However, she noted that while the repairs and improvements are underway, some degree of instability in the system is likely to persist until all major works are completed.
“We acknowledge the impact of these disruptions and ask for the understanding and patience of the public during this challenging period.
“TCN remains committed to improving the reliability of electricity supply, recognising the vital role that stable power plays in Nigeria’s socio-economic development.
“We assure the public that all necessary measures are being taken to ensure the grid’s long-term stability, in line with the recommendations of the investigative committee, while also addressing infrastructure damage, such as vandalised transmission lines,” she said.
The grid had earlier collapsed on Tuesday, marking the 10th such incident since January 2024.
The peak generation for the day was 3,743MW as of 10 am.
The Ikeja Electricity Distribution Company reported a power outage at 11:29 am.
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