NERC: Gas Supply Constraints Reduced Power Generation by 602GWh in Q3 2025

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The Nigerian Electricity Regulatory Commission (NERC) says Nigeria’s power generation on the grid declined by 7.15 percent in the third quarter (Q3) of 2025 compared to the second quarter (Q2) of the year.

In a report on Tuesday, NERC said the average hourly output on the grid in Q3 2025 stood at 4,179.15 megawatt-hour (MWh) per hour, translating to a total generation of 9,227.57 gigawatt-hour (GWh).

According to the report, total generation decreased from 9,830.31GWh recorded in Q2 to 9,227.57GWh in Q3, representing a de- cline of 602.74GWh.

“In total, twenty (20) plants recorded decreases in their average hourly generation across the quarters,” NERC said.

“Significant decreases in average hourly generation were recorded in Ihovbor_2 (-79.97MWh/h), Geregu_1 (-47.85MWh/h), Geregu_2 (-47.61MWh/h), Egbin_1 (-43.45MWh/h), Kainji_1 (-42.17MWh/h) and Sapele_2 (-26.55MWh/h) power plants.

“Conversely, increases in average hourly generation were record- ed in Okpai_1 (+58.82MWh/h), Jebba_1 (+27.88MWh/h), Omoku_1 (+15.35MWh/h), and Dadin-Kowa_1 (+14.88MWh/h) power plants across the quarters (Table 2).

“Cumulatively, the average hourly generation of the five-grid connected hydro power plants decreased by 3.23MWh/h/h (-0.24%) in 2025/Q3 compared to 2025/Q2.

“This decrease is largely driven by the -42.17MWh/h reduction in output from Kainji_1 (-9.57%). There were also negligible reductions in generation at Shiroro_1 (-0.71%) and Zungeru_1 (-0.62%).

“The cumulative average hourly generation from the grid connected thermal plants also decreased by 318.68MWh/h (-10.14%) during the quarter, with seventeen (17) out of the twenty-three (23) thermal plants recording decreases in their average hourly generation.

“The largest contributors to this decrease are Ihovbor_2 (-79.97MWh/h), Geregu_1 (-47.85MWh/h), Geregu_2 (-47.61MWh/h) and Egbin_1 (-43.45MWh/h) power plants.”

NERC said the key drivers of the decline recorded during the period were mechanical outages and gas supply constraints affecting several grid-connected power plants.