The collapse, which happned 37 days after the June 13 system failure, dropped power supply to 40 MW
The grid collapsed Wednesday, causing blackout in Lagos and states across the country.
The system failure, which is the sixth in the last 7 months, dipped the entire power supply nationwide to 40 mega watts.
The distribution load profile showed that the national grid collapsed at around 12:23 pm on Wednesday.
Electricity from the generation companies was abysmally low of 40MW against 3,000MW generated previous day.
Allocations to the 10 electricity distribution companies were zero, except 40MW and 10MW to Abuja and Ibadan Discos respectively at 12:23 pm when the incident occurred.
The cause of the system collapse is yet to be ascertained but the Transmission Company of Nigeria (TCN) has commenced investigation.
Efforts to reach Ikeja DisCo for further details have not yielded results.