The Nigerian Independent System Operator (NISO) says electricity supply has been fully restored following a partial collapse of the national grid on Tuesday, January 27, 2026.
The incident was the second grid disturbance recorded this year. NISO explained that the outage was triggered by a voltage disturbance that originated at the Gombe transmission substation, disrupting power generation and transmission across parts of the network.
In a statement, the operator said the disturbance quickly spread to other facilities, including the Jebba, Kainji and Ayede transmission substations, leading to the tripping of several transmission lines and generating units.
“The national grid has been fully restored, and electricity supply across the affected areas has since returned to normal,” NISO said.
The agency noted that the disruption did not amount to a total grid collapse, contrary to reports in some sections of the media. It stressed that only parts of the grid were affected.
NISO added that the corrective measures were implemented immediately to stabilise the system, with restoration commencing at about 11:01 and concluding shortly afterwards.
Further details on the incident, the operator said, are available on its official website.
