Blackout Hits Three States As TCN Line Suffers Outage

Rivers, Bayelsa and Imo states have been thrown into blackout following a forced outage on the Alaoji 132-kilovolt transmission line.

Naija News reports that the Transmission Company of Nigeria (TCN) confirmed the development in a statement issued on Tuesday by its spokesperson, Ndidi Mbah.

According to the company, the outage occurred in the early hours of Tuesday, June 23, 2026 and affected electricity supply to areas served by the Port Harcourt Electricity Distribution Company.

TCN said the outage was caused by an earth fault and distance protection failure on the Alaoji transmission line.

“The Transmission Company of Nigeria (TCN) wishes to inform the public that there was a forced outage on the Alaoji 132kV Transmission Line at about 3:59am today, Tuesday, June 23, 2026, due to an earth fault and distance protection failure,” the statement read.

The company said its maintenance crew had been mobilised to the affected line to identify and fix the fault.

TCN explained that the outage had prevented the Port Harcourt Electricity Distribution Company from off-taking electricity for onward distribution to its customers in parts of the affected states.

“TCN’s maintenance crew has since swung into action and is currently working on the line to ensure that normal bulk power supply is restored as quickly as possible.

“Consequently, the Port Harcourt Electricity Distribution Company (PHEDC) has been unable to off-take electricity supply for distribution to its customers in Owerri, Yenagoa, and Ahoada,” TCN stated.

The affected areas include Owerri in Imo State, Yenagoa in Bayelsa State and Ahoada in Rivers State.

The transmission company apologised to electricity consumers affected by the outage, assuring them that efforts were ongoing to restore supply.

“TCN apologizes for any inconvenience this outage will cause affected electricity customers,” the statement added.

The outage adds to the recurring power supply challenges facing many parts of the country, with consumers frequently affected by grid and transmission-related faults.