By Godswill Michael
The Transmission Company of Nigeria (TCN) has disputed the account given by the Eko Electricity Distribution Company (EKEDC) over a power outage at the Lekki Transmission Substation, saying faults on two distribution feeders triggered the incident.
TCN, in a statement issued by its management on Thursday, said the incident occurred at about 4:34 a.m. on Wednesday, August 26, 2026, when EKEDC’s Oniru 33kV and Agungi 33kV feeders tripped simultaneously due to overcurrent and an earth fault.
The company said the fault subsequently caused the inter-tripping of the primary and secondary breakers of its TR1 60MVA, 132/33kV transformer.
According to TCN, the incident was accompanied by a “heavy bang and smoke,” prompting its maintenance team to respond to the substation.
The transmission company was reacting to an earlier statement by EKEDC, which, according to TCN, claimed that its T11 transformer had tripped unexpectedly and was awaiting inspection.
“Contrary to EKEDP’s claim that TCN’s T11 transformer tripped unexpectedly and was awaiting inspection, the actual incident involved the simultaneous tripping of EKEDP’s Oniru 33kV and Agungi 33kV feeders at 04:34 a.m. on 26th August 2026, due to overcurrent and earth fault,” TCN said.
The company said its maintenance team “promptly responded, rehabilitated the damaged secondary breaker, and restored both primary and secondary breakers later that same day.”
However, TCN said the fault resurfaced after EKEDC attempted to restore its Oniru feeder.
“Upon EKEDP’s trial closure of its Oniru feeder, the same relay indications caused another trip, necessitating further corrective work,” the statement said.
TCN stressed that its T11 transformer did not suffer an outage as claimed by the distribution company.
“No outage occurred on TCN’s T11 transformer as claimed by EKEDP,” it said, adding that “the incident was strictly related to EKEDP’s Oniru 33kV and Agungi 33kV feeders.”
The transmission company said its technical team remained at the site and was working to restore electricity supply to affected customers.
“TCN’s technical team has been on-site, working assiduously to restore supply within the shortest possible time,” the statement said.
It assured affected electricity consumers that efforts were ongoing to resolve the fault and restore normal power supply, while apologising for the inconvenience caused by the disruption.
TCN also reaffirmed its commitment to strengthening the transmission network and improving the reliability of electricity supply across the country.