ABUJA, October 21, 2026 — Nigeria’s national electricity grid has returned to normal operation following a partial system disturbance on Monday that caused electricity generation to plunge dramatically, the Nigerian Independent System Operator (NISO) has confirmed.
The incident occurred at approximately 12:40 p.m. on October 19, 2026, when multiple trippings hit the 330-kilovolt transmission network. Generation dropped from about 3,840 megawatts earlier in the day to roughly 477 MW, according to data from NISO’s portal, sparking widespread reports of outages and fresh concerns over the reliability of the country’s power infrastructure.
In a statement issued the same day, NISO said it worked closely with the Transmission Company of Nigeria (TCN) to implement corrective measures and stabilise the system. “Restoration efforts have been successfully completed, and the national grid has returned to normal operation,” the operator stated.
NISO emphasised that the disturbance affected only a section of the grid and did not constitute a nationwide collapse, contrary to unverified reports circulating on social media and in some media outlets. The agency urged the public to rely solely on its official communication channels for accurate updates.
“The Nigerian Independent System Operator wishes to clarify that the incident affected only a section of the grid, contrary to unverified reports and claims currently circulating in the media,” the statement read. NISO reaffirmed its commitment to maintaining grid stability and ensuring the reliable operation of the national electricity transmission system.
The episode is the latest in a series of disruptions that have plagued Nigeria’s power sector. Just days earlier, the Transmission Company of Nigeria reported a full system collapse on Thursday, October 16, which was fully restored in the early hours of Friday after progressive reconnection of major load centres.
Nigeria’s electricity grid has long struggled with instability, frequent partial and total collapses, inadequate spinning reserves, and ageing infrastructure. Generation often fluctuates well below the country’s estimated demand, contributing to chronic load shedding and economic losses estimated in the billions of dollars annually.
Authorities have recently outlined longer-term measures to address the problem. Power Minister Joseph Tegbe disclosed earlier this month that the Federal Government has approved plans to develop new eastern and western electricity grids as part of efforts to reduce recurring collapses. A nationwide technical audit of existing infrastructure is also underway to prioritise repairs and upgrades.
As of Tuesday, NISO reported that the grid was operating normally following the successful restoration. Consumers in affected areas have gradually seen the return of supply, though intermittent challenges remain a feature of daily life for many Nigerians.
About the Author
