Lagos faces major power outage after twin failures at Egbin, transmission line

Lagos faces major power outage after twin failures at Egbin, transmission line 

 

Lagos is facing a widespread power outage after a critical double disruption knocked out a major chunk of electricity supply to the nation’s commercial hub.

The Nigerian Independent System Operator (NISO) said a sudden shutdown of the Egbin Power Station and a transmission line failure had significantly weakened power delivery to the state, forcing emergency load-shedding measures.

In a statement issued on Thursday, the system operator disclosed that the Egbin plant suffered a major operational disturbance late on April 28, wiping out its entire output and tightening supply constraints across Lagos.

The incident has also sparked unconfirmed reports of a contractor’s death at the facility, though officials have yet to verify the claim or provide details on what may have occurred.

According to NISO, the disruption happened at about 8:21 p.m., when Egbin’s generation abruptly dropped from approximately 641 megawatts to zero.

The outage was traced to critical equipment failure within the plant, specifically the breakdown of its central compressor and a malfunction in the circulating water pump system. The faults forced an immediate shutdown of all generating units to protect the facility from further damage.

 

The situation was further worsened by a transmission constraint limiting power flow into Lagos.

“Power supply to the Lagos region is currently further restricted due to the forced outage of the Osogbo–Ikeja West 330kV transmission line,” the operator said, noting that the fault has hampered the evacuation of available electricity into the Lagos load centre.

The combined impact of the generation collapse and transmission failure has created a major supply gap, prompting authorities to ration electricity to stabilise the grid and prevent a broader system failure.

NISO said contingency measures have been activated, including redistributing available power among distribution companies and prioritising critical infrastructure.

Efforts are also underway to ramp up generation from other plants to cushion the impact on consumers.

 

The agency apologised for the disruption, acknowledging that Lagos and surrounding areas have been hardest hit, and assured residents that stakeholders are working to restore normal supply as quickly as possible.

 

Located in Ikorodu, Egbin Power Station remains Nigeria’s largest thermal plant on the national grid, with an installed capacity exceeding 1,300MW. Its strategic importance means any outage typically triggers immediate and widespread supply shortages, especially in Lagos, the country’s biggest electricity market.

 

The Osogbo–Ikeja West 330kV line is equally vital, serving as a key transmission backbone that channels power into Lagos from other parts of the country.

The latest incident once again underscores the vulnerability of Nigeria’s power infrastructure, where isolated failures in generation or transmission can quickly cascade into large-scale outages, highlighting the urgent need for system upgrades and improved maintenance.