National grid records 2% improvement in capacity

…as average electricity generation hits 4,340 MWh/h in July report

Nigeria’s national power grid recorded a modest improvement in its operational performance for July 2025, with an increase of 2% in its plant availability factor compared to the previous month.

Data from the Nigerian Electricity Regulatory Commission (NERC), shared by the Nigeria National Grid on its official X handle on Saturday, revealed key insights into the country’s power sector.

According to the report, Nigeria’s power grid, with a total installed capacity of 13,625 MW, had an average available capacity of only 5,577 MW in July, representing a 41% plant availability factor.

This was a 2% improvement over the figures for June 2025. The average generation also saw a slight uptick, rising by 0.3% to 4,340 MWh per hour, although the average load factor dropped by 3% to 78%.

The report highlighted the contributions of several major power plants. The largest contributors to energy generation were: Egbin: Averaged 665 MWh per hour with a 93% load factor.

Delta: Contributed 417 MWh per hour with an 86% load factor; Kainji: Recorded 354 MWh per hour with an impressive 98% load factor; Okpai: Generated 344 MWh per hour with a 93% load factor; and Ihovbor 2: Added 403 MWh per hour at a 90% load factor.

Despite these positive contributions, the report also exposed significant underperformance. Afam 1, with a 726 MW installed capacity, and Alaoji 1 both recorded 0% availability for the entire month of July. Similarly, Sapele Steam 1, with a 720 MW capacity, managed only a 3% availability.

The NERC factsheet also noted that the grid’s stability continued to be a concern. The frequency operated outside the set limits of 49.75 Hz and 50.25 Hz, while the voltage also breached its acceptable range, with a high of 347.87 kV (1% above the limit) and a low of 301.10 kV (4% below the limit).

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