By Stella Odueme
The Transmission Company of Nigeria (TCN) has increased transformer capacity in its Port Harcourt Transmission Region by 635 megavolt-amperes (MVA), as part of efforts to strengthen electricity transmission and improve bulk power delivery across the South-South.
The General Manager, Port Harcourt Transmission Region, Engr. Nasiru Bello, disclosed this in an interview with TCN Transmission News on October 1, 2026, where he highlighted ongoing infrastructure upgrades and projects designed to address transmission constraints in the region.
Bello said the additional capacity would enable the network to transmit more electricity and improve bulk power supply to distribution load centres for onward delivery to consumers.
He explained that the 635MVA capacity was achieved through the installation of transformers at five strategic transmission substations.
The installations comprise one 125MVA transformer at Port Harcourt Town Transmission Substation, two 125MVA transformers at Port Harcourt Main Transmission Substation, one 125MVA transformer at Alaoji Transmission Substation, one 75MVA transformer at Aba Transmission Substation and one 60MVA transformer at Itu Transmission Substation.
Beyond the capacity expansion, Bello said TCN was implementing additional projects to strengthen the transmission network and improve electricity supply across the region.
He disclosed that construction was ongoing on the 2x160MVA Ekori and 2x160MVA Obudu Transmission Substations in the Calabar Sub-Region, while the Ogoja Transmission Substation project had reached approximately 90 per cent completion.
According to him, plans have also been concluded for the construction of a new transmission substation in Oron, Akwa Ibom State, with site mobilisation and project execution expected to commence shortly.
The regional general manager added that the infrastructure projects were being complemented by routine maintenance and asset rehabilitation across the network.
He explained that these interventions were critical to improving equipment reliability, minimising avoidable outages and reducing technical losses.
Bello said the projects aligned with TCN's broader mandate to expand and modernise Nigeria's transmission infrastructure, thereby enhancing bulk electricity delivery to distribution load centres across the South-South and other parts of the country.