The Transmission Company of Nigeria (TCN) has cautioned that instability in the national grid is expected to persist due to ongoing repairs, following another collapse on Thursday—the second in just three days.

Ndidi Mbah, TCN’s General Manager for Public Affairs, explained that a sudden frequency spike from 50.33Hz to 51.44Hz caused a disruption around 11:29 a.m. on Thursday. The surge, originating from one of TCN’s substations, prompted an immediate shutdown to prevent further issues. “Recovery efforts were initiated immediately, and power was restored to the Abuja Axis within 28 minutes, though work is still ongoing,” Mbah stated.

TCN is undertaking significant repairs and upgrades to critical infrastructure, including the Shiroro-Mando 330kV transmission line, improvements at the Jebba substation, and the restoration of the Ugwuaji-Apir 330kV transmission line.

Following recent investigative findings, TCN is implementing recommendations to address vulnerabilities in the grid. “These upgrades are part of a strategic intervention based on the committee’s findings,” Mbah added, emphasizing that intermittent grid instability is expected until all major repairs are completed.

Mbah acknowledged the public’s frustration with the ongoing disruptions and urged patience during this challenging period. She reiterated TCN’s commitment to improving the grid’s stability, recognizing the critical role reliable power plays in Nigeria’s socio-economic development.

Minister of Power, Adebayo Adelabu, recently underscored similar concerns, attributing the recurring failures to outdated infrastructure and calling for a comprehensive overhaul to achieve long-term grid stability.