The Transmission Company of Nigeria (TCN) said the Alaoji–Owerri 132kV Transmission Lines 1 and 2 have been successfully restored to service.
The TCN General Manager, Public Affairs, Ndidi Mbah, in a statement, said the two lines were energised at 7:05 p.m. and 7:06 p.m., respectively, on Wednesday, 24 June.
On Tuesday, TCN said there was a forced outage on the Alaoji 132kV Transmission Line. The TCN said the outage occurred at about 3:59 a.m. on Tuesday due to an earth fault and distance protection failure.
Ms Mbah said upon identification of the fault location, TCN’s maintenance crew immediately mobilised to the site and commenced repair works.
“Following the successful repair of the fault on Line 1, the line was restored to service at approximately 7:25 p.m. on Tuesday, 23rd June 2026, enabling partial restoration of bulk electricity transmission to Imo State, Bayelsa State (Yenagoa), and parts of Rivers State (Ahoda).
“To facilitate the safe repair of Line 2, it became necessary to temporarily de-energise Line 1. This was because the proximity of the two high-voltage transmission lines could induce electromagnetic induction on the faulty line when the adjacent line remained energised, thereby posing a safety risk to TCN ‘s maintenance engineers,”the statement said.
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Ms Mbah said the temporary outage of Line 1 was approved by the Nigerian Independent System Operator (NISO) and undertaken with the concurrence of the Enugu Electricity Distribution Company (EEDC) and the Port Harcourt Electricity Distribution Company (PHEDC).
She said this precautionary measure provided the safe working space required for TCN engineers to complete repairs and restore Line 2 to service.
“With the successful restoration of both transmission lines, the Alaoji–Owerri transmission corridor is now fully operational. EEDC and PHEDC can now offtake full load for onward distribution to their customers,” Ms Mbah said.
“TCN appreciates the patience and understanding of electricity consumers affected by the outage and regrets the inconvenience caused.”
The company said it remains committed to maintaining a reliable and efficient transmission network for the evacuation and delivery of bulk electricity across the country.
