The Nigerian Impartial System Operator (NISO) has confirmed that Tuesday’s nationwide grid collapse was traced to a voltage disturbance on the Gombe transmission substation.
The system operator disclosed this in an announcement issued on Tuesday whereas offering updates on restore and restoration efforts.
Based on NISO, the incident resulted in a partial system collapse, marking the second grid disturbance recorded in 2026.
NISO stated electrical energy provide throughout the affected areas has since been absolutely restored following quick corrective actions by its technical groups.
What NISO is saying
NISO defined that the disturbance originated from the Gombe transmission substation earlier than spreading to different components of the community.
The company confused that the incident didn’t quantity to a complete system collapse, opposite to studies by some media organisations.
“The nationwide grid has been absolutely restored, and electrical energy provide throughout the affected areas has since returned to regular.”
“The incident solely affected a part of the nationwide grid, due to this fact not a complete collapse,” NISO added.
“The occasion was accompanied by the tripping of some transmission strains and producing models, leading to a partial system collapse.”
The system operator stated restoration efforts commenced shortly after the disturbance and have been accomplished inside hours.
Extra Insights
NISO disclosed that the voltage disturbance rapidly propagated throughout the transmission community, affecting a number of substations.
The disturbance impacted energy infrastructure past Gombe earlier than stabilisation measures have been carried out.
- The voltage disturbance unfold to the Jebba Transmission Substation.
- Kainji Transmission Substation was additionally affected.
- Ayede Transmission Substation skilled disruptions because the disturbance propagated.
- Some transmission strains and producing models tripped throughout the incident.
Based on NISO, corrective actions have been instantly deployed to stabilise the system and restore regular grid operations.
What it is best to know
Nigeria’s energy grid has continued to expertise recurring disturbances lately.
In 2025 alone, the nationwide grid collapsed a number of occasions, with the final recorded incident occurring on December 29.
- Tuesday’s incident represents the second grid collapse recorded in 2026.
- The most recent disturbance was labeled as a partial system collapse.
- Nairametrics studies that knowledge obtained from the NISO confirmed that energy technology dropped to zero megawatts at about 11:00 am on Tuesday.
- Voltage instability stays a key set off for grid disruptions.
The repeated grid failures proceed to focus on ongoing operational and infrastructure challenges inside Nigeria’s energy transmission community.
The Federal Authorities has attributed recurring grid collapses to the lack of distribution corporations to completely take up generated energy, a state of affairs that always results in system instability.
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