TCN adds 635MVA transformer capacity to South-South network
By Alabidun Shuaib AbdulRahman
The Transmission Company of Nigeria, TCN has added 635 megavolt-amperes of transformer capacity to its South-South network as part of efforts to improve electricity transmission and address supply constraints in the region.
The General Manager, Port Harcourt Transmission Region, Nasiru Bello, disclosed this in an interview with TCN Transmission News on October 1, 2026.
Bello said the capacity expansion would enable the company to transmit more electricity and improve bulk power delivery to distribution load centres across the region.
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The new capacity comprises a 125MVA transformer at the Port Harcourt Town Transmission Substation, two 125MVA transformers at the Port Harcourt Main Transmission Substation and another 125MVA transformer at the Alaoji Transmission Substation.
Others are a 75MVA transformer at the Aba Transmission Substation and a 60MVA transformer at the Itu Transmission Substation.
The regional manager said TCN was also executing additional projects to expand its transmission infrastructure and improve the reliability of electricity supply.
He disclosed that construction was ongoing at the Ekori and Obudu transmission substations in the Calabar Sub-Region, with each designed to accommodate two 160MVA transformers.
According to him, the Ogoja Transmission Substation project is about 90 per cent complete.
Bello added that plans had been concluded for a new transmission substation in Oron, Akwa Ibom State, with site mobilisation and construction expected to begin shortly.
He said the projects were being complemented by routine maintenance and the rehabilitation of existing transmission assets to improve equipment reliability, reduce avoidable outages and minimise technical losses.
The regional manager noted that the initiatives formed part of TCN’s broader efforts to expand and modernise the national transmission network and strengthen bulk electricity delivery to distribution companies.
