Nigeria’s electricity grid is set to experience a temporary decline over the next four days following planned maintenance on a key gas supply facility, a development expected to reduce power generation by nearly 935 megawatts.
The Nigerian Independent System Operator (NISO) announced on Thursday that the scheduled shutdown, running from February 12 to February 15, 2026, will limit gas supply to several thermal power plants, resulting in a projected loss of 934.96MW.
This represents about a 19.67 per cent drop from the current available generation capacity of 4,753.10MW.
In a statement titled “Anticipated Gas Supply Constraints and Potential Load Management Measures,” NISO warned that the shortfall could lead to load shedding across parts of the country.
“The general public and electricity market participants are hereby notified of expected gas supply constraints affecting major thermal generating stations on the national grid,” the system operator said, adding that full gas supply is anticipated to resume on February 16, 2026.
NISO identified Egbin, Azura, Sapele and Transcorp power plants as facilities likely to be directly affected by the reduced gas flow.
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It also noted that NDPHC Sapele, Olorunsogo and Omotosho power stations could face indirect disruptions due to network-wide balancing challenges.
The operator explained that electricity distribution companies may be forced to implement structured load management during the maintenance window, with priority expected to be given to critical infrastructure and essential services.
The latest development underscores Nigeria’s continued dependence on gas-fired generation and highlights the vulnerability of the power sector to upstream supply disruptions.
With thermal plants forming the backbone of national electricity output, even short-term gas constraints can have immediate consequences for households and businesses.
NISO reassured consumers that the situation is temporary and that generation levels should stabilise once gas supply is fully restored on February 16.