The Nigerian Independent System Operator (NISO) says the national grid has been fully restored and electricity supply across the affected areas returned to normal.

The management of NISO made this known in a statement in Abuja on Tuesday while giving an update on the partial system disturbance on the national grid.

According to NISO, at approximately 10:48 a.m. on Tuesday, the national grid experienced a voltage disturbance which originated from the Gombe Transmission Substation.

It said the voltage disturbance rapidly propagated across the network, affecting Jebba, Kainji, and subsequently Ayede transmission substations.

”The event was accompanied by the tripping of some transmission lines and generating units, resulting in a partial system collapse.

”Appropriate corrective actions were immediately implemented to stabilise the system and restore normal operations.

”Restoration, which began at about 11:11am has since been completed,” NISO said.

The system operator said that the incident only affected part of the grid, adding that it was not a total collapse as reported by some media organisations.

It said that additional information can be obtained from our website: www.niso.org.ng.

(NAN)