Mkpoikana Udoma
Port Harcourt — 28 grid-connected electricity generation plants across Nigeria generated an average of 5,577 megawatts, MW, of electricity in July 2025, reflecting a marginal increase of 5% from the 5,292MW recorded in June 2025.
Data on the operational performance of power plants released by the Nigerian Electricity Regulatory Commission, NERC, highlighted that the 28 plants achieved only a 41% availability factor despite their cumulative installed capacity of 13,625MW.
The report showed that larger power plants, including Egbin ST, Delta GS, Kainji, Shell’s Afam VI, Zungeru, Odukpani, Shiroro, Jebba, Okpai, Azura IPP, and Geregu, contributed 4281 MW on average, accounting for 76.7% of the total energy generated in December.
Egbin 1 and Zungeru 1 emerged as the highest power producers, with average outputs of 717MW and 677MW respectively, while Delta followed with 482MW.
Smaller power plants such as Afam I-V, Sapele ST, Olorunsogo NIPP, Omotosho NIPP, Sapele GT NIPP, Ihovbor NIPP, Geregu NIPP, Omotosho, Olorunsogo, Ibom Power, Rivers NIPP, Omoku, Trans Amadi, Igbafo, Taopex Energy, Mepp, and Dadin Kowa generated a combined average of 1,295MW, representing 23.3% of the total energy output.
However, some plants performed below capacity. For instance, Trans Amadi 1 and Rivers 1 produced just 7MW and 9MW on average, while Alaoji 1 and Afam 1 failed to generate any power during the period, despite their installed capacities of 500MW and 726MW.
NERC’s data also revealed that the average hourly available capacity from the 28 power plants was 4,340MWh/h during the review period, further underscoring the gap between installed capacity and actual performance in Nigeria’s power sector.
