Nigeria’s national grid experienced a sharp drop in electricity generation on Monday, with supply falling by 81.5 per cent from 3,647 megawatts (MW) at noon to 675MW by 1pm following disruptions affecting several power plants.
Data from the Nigerian Independent System Operator (NISO) showed that the number of power plants supplying electricity to the grid declined significantly during the incident. Affected plants included Azura, Egbin, Jebba and Kainji hydroelectric power plants.
The development prompted electricity distribution companies, including Abuja Electricity Distribution Company and Ikeja Electric, to notify customers of supply disruptions. AEDC attributed the interruption to a grid-related challenge, while Ikeja Electric said it was experiencing a shortfall in the electricity allocated to its network.
However, electricity supply began to recover later in the day, reaching 2,150MW by 5pm, although it remained below the morning levels, when generation had exceeded 4,300MW.
NISO said the incident, which occurred at about 12:40pm on October 19, resulted from multiple trippings on the 330-kilovolt transmission network. The operator said it worked with the Transmission Company of Nigeria to stabilise the system and restore normal operations.
NISO added that restoration efforts had been completed and clarified that the disruption affected only a section of the national grid.
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