By Stella Odueme
The Transmission Company of Nigeria (TCN) has announced electricity supply disruptions in parts of Port Harcourt, Rivers State, and temporary power interruption in parts of Abuja following a labour-related incident at Afam IV Power Station and scheduled preventive maintenance at the Kubwa 132/33kV Transmission Substation.
In Port Harcourt, TCN said the disruption, which began on Monday, September 28, 2026, followed the opening of the Afam–Alaoji 330kV Transmission Line 2 at the Alaoji 330kV Transmission Substation by members of the National Union of Electricity Employees (NUEE), Rivers State Chapter.
According to the company in two separate statements by its Management on Tuesday, the action is linked to an ongoing labour dispute between the management of Afam IV Gas Power Station and NUEE.
TCN said the development caused the 150MVA 330/132kV inter-bus transformer at Afam IV to trip, affecting bulk electricity transmission to parts of Port Harcourt and its environs.
The affected 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.
The company said it is engaging relevant stakeholders, including the Nigerian Independent System Operator (NISO), to restore the affected facilities as soon as conditions permit safe restoration.
Meanwhile, TCN said parts of Abuja will experience a temporary power supply interruption on Wednesday, September 30, 2026, due to its annual preventive maintenance exercise at the Kubwa 132/33kV Transmission Substation.
The maintenance, scheduled for the Gwarimpa-Kubwa 132/33kV Line 1 bay switchgear and associated equipment, will take place between 10:00 a.m. and 1:00 p.m.
TCN explained that the exercise would prevent the Abuja Electricity Distribution Company (AEDC) from off-taking power supply to customers in parts of Kubwa, Bwari and adjoining areas during the maintenance period.
The transmission company apologised to electricity consumers in both affected areas for the inconvenience caused by the disruptions.
TCN said it would continue to provide updates on the Port Harcourt situation as developments unfold.