- Restoration efforts commenced almost immediately and have since been completed.
- The incident affected only part of the national grid and did not amount to a total system collapse.
The Nigerian Independent System Operator (NISO) has announced that at approximately 10:48 hours on January 27, 2026, the national grid experienced a voltage disturbance originating from the Gombe Transmission Substation.
According to NISO, the voltage disturbance rapidly propagated across the network, affecting Jebba, Kainji, and subsequently Ayede Transmission Substations. The incident was accompanied by the tripping of some transmission lines and generating units, resulting in a partial system collapse.
NISO stated that it immediately implemented appropriate corrective actions to stabilise the system and restore normal operations. “Restoration efforts commenced at about 11:11 a.m. and have since been completed,” the statement read in part.
The operator clarified that the incident affected only part of the national grid and did not amount to a total system collapse, contrary to reports by some media organisations. NISO noted that additional information can be obtained from its website.
The national grid has now been fully restored, with electricity supply across the affected areas returned to normal.