Blackout: TCN explains cause of power outage in Port Harcourt, Rivers

The Transmission Company of Nigeria (TCN) has provided an explanation for the recent power outage in parts of Port Harcourt, Rivers State. The disruption began on Monday, September 28, 2026, when members of the National Union of Electricity Employees (NUEE), Rivers State Chapter, opened the Afam–Alaoji 330kV Transmission Line 2 at the Alaoji 330kV Transmission Substation.

This action was a result of an ongoing labour dispute involving the management of Afam IV Gas Power Station and NUEE. As a consequence, the 150MVA 330/132kV inter-bus transformer at Afam IV tripped, impacting the bulk electricity transmission to various areas in Port Harcourt. The affected transmission facilities include the Port Harcourt Town 132kV Transmission Substation, Elelenwo 132kV Transmission Substation, and the 60MVA 132/33kV transformer at the Port Harcourt Mains 132kV Transmission Substation.

TCN is currently working with relevant stakeholders, such as the Nigerian Independent System Operator (NISO), to restore the affected facilities as soon as conditions permit. The company regrets the inconvenience caused to electricity consumers and will continue to provide updates on the situation.

Brief written by urgent.news from Daily Post Nigeria's own syndicated text. Machine-written — may contain errors; check the original before relying on it.