Electricity supply across Lagos and its environs was disrupted on Thursday following a voltage instability on the national grid that triggered transmission line outages and the loss of some generating stations, the Transmission Company of Nigeria (TCN) has said.
According to the company’s General Manager, Public Affairs, Ndidi Mbah in a Statement, the incident occurred at about 8:19 a.m. when the national grid experienced a voltage disturbance that quickly spread across the Lagos corridor, resulting in the interruption of power supply to the state and surrounding areas.
TCN said the National Control Centre immediately directed several power generating companies to reduce their output to arrest a rise in system frequency, stabilize the grid, and prevent further disruption nationwide.
In response to the incident, the Minister of Power, Chief Joseph Tegbe, convened an emergency meeting with the management of TCN and the Nigerian Independent System Operator (NISO) to coordinate restoration efforts and review measures to prevent a recurrence.
The company disclosed that the Benin–Egbin 330kV transmission line, which was affected during the disturbance, has since been restored and is transmitting bulk electricity.
However, engineers from TCN’s Benin and Omotoso subregions are continuing repair work on the Benin–Omotoso 330kV transmission line to enable the full restoration of bulk power supply to the Lagos complex.
TCN apologised for the inconvenience caused to residents, businesses and electricity consumers affected by the outage, assuring the public that the Ministry of Power and other relevant agencies are working to restore normal power transmission as quickly as possible.
The company said its long-term objective remains to strengthen and stabilise the national grid in order to minimise the recurrence of similar incidents.
It appealed to consumers in the affected areas to remain patient, adding that further updates would be provided as restoration work progresses.
