Data from the Nigerian Independent System Operator’s (NISO) portal, niggrid.org, showed that generation stood at approximately 3,840MW at 7am before dropping sharply to 476.70MW by 1pm.
The decline reportedly began around 12:40pm, with most power plants recording zero output. Major stations, including Egbin, Jebba, Shiroro and Kainji, alongside several gas-fired facilities, were listed as generating no electricity.
Only a few stations, including Odukpani NIPP, Omotosho and Sapele, continued to contribute to the national supply. By 1:23pm, the dashboard showed generation at about 480MW, with only five generating companies recording output.
The sharp decline coincided with reports of power outages, as consumers took to social media to complain about interruptions between 12:45pm and 1:20pm.
However, NISO dismissed claims that the incident amounted to a national grid collapse, insisting that there was no system-wide disturbance.
A senior NISO official, who spoke on condition of anonymity, attributed the outages to possible localised issues.
“There is no disturbance at the moment. Probably if something is happening, maybe it is a local issue, but there is nothing on the grid,” the official said.
The official explained that temporary outages or minor equipment trips in some areas did not necessarily indicate a national grid collapse.
“Some of these things are tripping or other minor issues that, within minutes, you just see that it is fixed,” the official added.
According to the official, NISO had directed its team to conduct a system check to identify any possible anomalies.
The development comes amid recurring disturbances that have raised concerns about the reliability of electricity supply to Nigerian homes and businesses.
In response to the persistent challenges, the Federal Government recently approved plans to develop new eastern and western power grids aimed at improving electricity supply stability and reducing recurring grid failures.
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