The Transmission Company of Nigeria, TCN, hereby informs the public that the 100MVA TR4 transformer at the Apo 132/33kV Transmission Substation tripped in the early hours of today, September 9th, 2026.
Preliminary findings indicate oil spillage on the Red Phase HV bushing of the transformer. Consequently, four 33kV feeders, including feeder H31, H33, H35, and H37
are currently out of supply.
Our maintenance crew are already carrying out detailed investigation on the transformer, to ascertain the exact cause of the tripping to enable us effect repairs and restore the transformer.
We regret the inconvenience this may cause Abuja Electricity Distribution Company (AEDC) customers supplied from the affected feeders and assure that our engineers are doing everything possible to ensure a quick restoration of bulk power supply through the affected transformer.
Signed
Management
Transmission Company of Nigeria(TCN)
9/9/26
