Transmission Company of Nigeria (TCN) has declared force majeure following severe flooding that affected its Oworonshoki 132/33kV and Lekki 330/132kV transmission substations in Lagos State, disrupting critical power infrastructure.
The company said prolonged rainfall led to rising floodwaters that submerged key operational areas, forcing the shutdown of parts of the transmission network.
TCN explained that while the Lekki 330/132kV substation remains partially operational due to continuous water-pumping efforts by emergency teams, the Oworonshoki 132/33kV facility has been taken completely out of service after floodwaters inundated essential equipment.
At the Oworonshoki station, two transformers TR1 (60MVA) and TR3 (30MVA) tripped under no-load conditions and could not be restarted despite attempts by engineers.
The company also reported that protection and control cables connected to the affected transformers were fully submerged, making restoration impossible until water levels recede.
According to a statement issued by TCN’s General Manager of Public Affairs, Ndidi Mbah, engineers are currently working to drain the facility and will carry out full integrity tests once conditions improve.
TCN warned that continued rainfall could further strain operations, even as recovery efforts intensify at the affected sites.
The disruption is expected to impact electricity supply to customers served by Eko Electricity Distribution Company, which receives bulk power from the affected transmission nodes.
The company apologised for the inconvenience and assured the public that all necessary resources are being deployed to restore normal operations as soon as possible.