Residents of parts of Kubwa, Bwari, Gwarinpa, Suleja and nearby communities should prepare for a power interruption, as the Transmission Company of Nigeria (TCN) carries out maintenance at its 330kV Katampe Transmission Substation.
In a notice issued on Friday, TCN said the work will run from Saturday, November 14, to Tuesday, November 24, 2026. It involves replacing a defective earth switch on the 330kV Gwagwalada to Katampe Line 1 Incomer Disconnector with a new unit.
Although the maintenance covers several days, TCN said electricity supply will be interrupted only on Saturday, November 14, and Tuesday, November 24, 2026. On each of the two days, the outage will last from 10:00am to 6:00pm.
As a result, the Abuja Electricity Distribution Company (AEDC) will be unable to take bulk power from the grid for onward supply to customers served through three substations during those periods.
The affected substations and the communities they serve are: 132kV Kubwa Substation: parts of Kubwa, Bwari, Dei Dei and environs, 132kV Suleja Substation: Zuba, Kaduna Road, Dakwa, Sabon Wuse and environs, and 132kV Gwarinpa GIS Substation: parts of Gwarinpa, Dawaki and environs.
An earth switch is a safety component in a substation. It grounds equipment during maintenance so that engineers can work without the risk of residual electric charge. A defective unit can compromise safety and the reliability of the connected line, which is why TCN is replacing it.
The Katampe substation is a key node in the transmission network supplying the Federal Capital Territory and neighbouring areas, and work on such equipment often requires temporary shutdowns of the lines it serves.
TCN apologised for the inconvenience the interruption will cause electricity customers in the affected areas.
