It, however, assured that restoration of the grid was at an advanced
stage and explained that the total collapse was due to tripping of three
generator units at Egbin power generation station.
The daily report on Nigeria’s power sector stated that the grid
collapsed totally on Thursday, September 28, 2017, after the country
generated 3,515 megawatts of electricity the preceding day.
The TCN said, “A total system collapse was recorded on September 28, 2017 at 20:03Hrs.
“Reports obtained from stations and the sequence of events generated
by the SCADA system indicated that the system collapse was triggered by
the tripping of Egbin Units ST4, ST6 and ST5 at ‘20:03:15, 20:03:32 and
“By this incident, the Nigerian electric power grid lost generation completely before restoration commenced at 20:22Hrs.”
TCN added that the development had left the system vulnerable to the
extent that perturbations of this magnitude resulted in severe system
frequency dip that culminated in system collapse.