Power Returns As NISO Stabilises Grid After Partial Collapse
Nigeria’s National Grid Restored After Tuesday Disturbance — NISO
THE Nigerian Independent System Operator (NISO) has announced the full restoration of the national electricity grid following a system disturbance that plunged parts of the country into darkness on Tuesday morning.
In a statement posted on its official X handle on Tuesday evening, NISO confirmed that electricity supply across affected areas had been restored and normal operations resumed.
Cause of the Disturbance
According to the system operator, the grid disturbance occurred at about 10:48 a.m. and was traced to a voltage fluctuation originating from the Gombe Transmission Substation. The disruption quickly spread across the transmission network, affecting major substations at Jebba, Kainji and Ayede.
NISO explained that the voltage disturbance caused the tripping of some transmission lines and generating units, leading to what it described as a partial system collapse.
Swift Restoration Efforts
The operator said corrective measures were immediately implemented to stabilise the system and prevent a total shutdown of the grid. Restoration work began around 11:11 a.m., barely 30 minutes after the incident, and was completed later in the day.
“The national grid has been fully restored and electricity supply across the affected areas has since returned to normal,” NISO stated.
Not a Total Grid Collapse
NISO clarified that the incident did not amount to a total grid collapse, contrary to some media reports. It stressed that only parts of the network were affected during the disturbance.
“The incident only affected part of the grid, therefore not a total collapse as reported by some media organisations,” the statement added.
Distribution Companies Confirm Restoration
Electricity distribution companies also confirmed the restoration of power supply. The Eko Electricity Distribution Company (EKEDC) said supply from the national grid had resumed, though allocation remained limited.
EKEDC urged customers to remain patient, noting that feeders were being restored gradually.
Tuesday’s incident marked the second grid disturbance in less than five days, reigniting concerns over the stability and resilience of Nigeria’s power infrastructure.
