Nigeria, Feb. 12 -- Nigeria's electricity grid collapsed on Wednesday, throwing several cities into darkness.

A grid collapse, which is the breakdown of transmission lines due to over or under-frequency, is said to be responsible for this outage.

Electricity distribution companies announced a system outage around 11:34 a.m. on Wednesday.

Confirming the collapse, the Abuja Electricity Distribution Company (AEDC), in a statement posted on its X handle, said: "Dear Valued Customer, we regret to inform you that a system disturbance occurred on the national grid at 11:34 a.m. today causing a power outage across our franchise areas.

"While gradual restoration of power supply has commenced, please be assured that we are working closely with ...