Eko Electricity Distribution Company and the Transmission Company of Nigeria are at odds over the cause of reduced electricity supplies to areas of Lagos and Ogun states served by EKEDC.
Key takeaways
- EKEDC said its allocation fell from 486 megawatts to 347MW because of national-grid limitations and weak generation.
- The lower allocation has affected customers in southern Lagos and the Agbara industrial corridor in Ogun State.
- EKEDC temporarily adjusted supplies to some feeders, including Band A circuits, to spread the shortfall.
- TCN rejected EKEDC’s explanation, saying the disruption involved two 33kV feeders that tripped after overcurrent and an earth fault.
EKEDC cites supply constraints
In a statement issued on X on Friday, EKEDC said restrictions on the national transmission system, combined with reduced output from a major generation source, had cut the electricity available to it from 486MW to 347MW.
The distributor said the resulting shortage had weakened service for customers across southern parts of Lagos, as well as businesses and industrial users in the Agbara communities of Ogun State.
EKEDC said it was temporarily modifying supply to certain feeders, including Band A feeders, in an effort to distribute the limited power more evenly. It added that it was engaging TCN to recover its former allocation and would, where feasible, move more of the reduction to lower-service-tier feeders. The company said regular supply would resume once the volume of power assigned to it improved.
TCN disputes account of incident
TCN rejected EKEDC’s explanation for the interruption and said its T11 transformer had not suffered an outage, contrary to the distributor’s position.
The transmission operator said the event was confined to EKEDC’s Oniru 33kV and Agungi 33kV feeders. Both circuits tripped at 4:34 a.m. on August 26, 2026, after an overcurrent condition and an earth fault.
TCN said the fault triggered the linked operation of the primary and secondary breakers on its TR1-60MVA, 132/33kV transformer. The incident produced a loud bang and smoke.
Its maintenance team responded quickly, repaired the damaged secondary breaker and returned both transformer breakers to service later that day. TCN said another trip occurred when EKEDC attempted to close its Oniru feeder on a trial basis, as the same relay signals reappeared. That required additional corrective repairs, it said.
