The Transmission Company of Nigeria (TCN) announced that the national grid has been fully restored following a partial disturbance that occurred at approximately 15:09 hours on Saturday.

In a statement signed by its General Manager of Public Affairs, Ndidi Mbah, TCN explained that the disturbance was likely triggered by the unexpected tripping of three units at a power generating station. This incident removed 313MW from the grid, causing instability and a loss of bulk supply to a section of the national grid.

“The system disturbance, the third partial grid disturbance this year, with one total disturbance, was suspected to be caused by the unexpected tripping of three units at a power generating station. This event suddenly removed 313MW from the grid, leading to instability and the loss of bulk supply,” the statement read.

Mbah added that the System Operator responded to the sudden drop in generation by isolating a section of the grid, including the Ibom Power Station, which continued to supply Uyo, Aba, Itu, Eket, Calabar, and other areas despite the outage in other parts of the grid.

“Operators commenced grid restoration efforts immediately following the incident. By 21:57 hours on the same day, the affected section of the grid was successfully restored,” Mbah said.

Channels Television reported that the grid collapse resulted in a nationwide blackout affecting several states and the Federal Capital Territory (FCT), Abuja.

This year’s national grid disturbances include the first collapse on February 4, followed by outages on March 28 and April 15.