Nigeria’s commercial capital is bracing for a potential widespread blackout after a major operational failure at the Egbin Power Station combined with a critical transmission line outage disrupted electricity supply to the Lagos region.
The development was disclosed by Nigeria National Grid in an update on Tuesday night, warning residents to prepare for significant power disruptions. “A prolonged blackout may be imminent in Lagos State following a sudden shutdown of the Egbin Power Station and a simultaneous transmission line outage,” the agency stated.
According to the grid operator, the Egbin facility—Nigeria’s largest power-generating station—suffered a major disturbance at approximately 8:21 p.m. on April 28, 2026, resulting in a complete loss of generation. Output reportedly plunged from about 641 megawatts to zero, dealing a heavy blow to national electricity supply.
“This incident was caused by the failure of the plant’s central compressor, in addition to a malfunction of the circulating water pump system, which necessitated an immediate shutdown of all generating units to safeguard the facility,” the statement added.
The impact of the shutdown has been compounded by a separate transmission constraint involving the Osogbo–Ikeja West 330kV line, a critical corridor for evacuating electricity into Lagos. The forced outage of the line has further restricted the flow of available power into the state, deepening supply challenges.
Industry analysts note that the dual disruption—generation collapse and transmission failure—has significantly weakened grid stability, particularly in Lagos, which depends heavily on Egbin’s output for its daily electricity needs. The incident has already triggered noticeable supply shortfalls across parts of the state, with fears that outages could intensify if the situation persists.
While efforts are expected to be underway to restore both generation capacity and transmission functionality, no official timeline has yet been provided for full recovery. The latest setback underscores the fragility of Nigeria’s power infrastructure and the outsized role of key assets like Egbin in sustaining the national grid.
