The Transmission Company of Nigeria (TCN) says it has restored the Benin–Egbin 330kV transmission line following a power disruption that affected Lagos and its environs on Thursday morning.

In a statement issued on Thursday by its General Manager, Public Affairs, Ndidi Mbah, the company said the disturbance occurred at about 8:19 a.m. after the national grid experienced voltage instability.

According to TCN, the incident quickly spread across the Lagos corridor, resulting in the loss of some generating stations, transmission line outages, and interruption of electricity supply.

TCN explained that immediate steps were taken to prevent a wider collapse of the power system.

“At approximately 8:19 am this morning, the national grid experienced voltage instability which rapidly spread across the Lagos corridor, leading to the loss of some generating stations, causing transmission line outages, and the subsequent interruption of electricity supply to Lagos and its environs.

“In response, the National Control Centre swiftly instructed several generators to reduce output in order to arrest the resulting frequency rise, stabilize the system, and prevent further disruption to the national grid,” the company said.

It noted that following the development, the Minister of Power, Joseph Tegbe, convened an emergency meeting with the leadership of the Transmission Company of Nigeria (TCN) and the Nigerian Independent System Operator (NISO) to coordinate restoration efforts.

TCN said restoration work had already yielded results, with one of the affected transmission lines successfully returned to service.

“We are pleased to report that one of the affected lines, the Benin–Egbin 330kV transmission line, which was opened during the incident, has already been restored and is currently transmitting bulk electricity,” the statement read in part.

The company added that engineers from its Benin and Omotoso subregions were working to repair the remaining fault on the Benin–Omotoso 330kV transmission line to ensure the full restoration of bulk power supply to Lagos as quickly as possible.

While apologising for the disruption, TCN assured residents and businesses that efforts were ongoing to normalise electricity transmission.

“We deeply regret the inconvenience and discomfort this incident has caused residents, businesses, and all electricity customers in the affected areas. Please be assured that the Ministry of Power and all relevant agencies are doing everything possible to rectify the line, to enable normal bulk power transmission along the affected line,” it stated.

The company said its priority remained strengthening the national grid to reduce the likelihood of similar incidents.

TCN appealed to electricity consumers in the affected areas to remain patient as restoration work continues.

“We urge all affected consumers to please exercise patience as we work to restore bulk power supply through the Benin–Omotoso transmission line. Updates will be provided as restoration progresses,” it added.

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