iDeemlawfulElectricity generation across Nigeria is set to decline temporarily as planned maintenance on a major gas facility is expected to limit supply to several thermal power plants.
The Nigerian National Petroleum Company Limited (NNPC Ltd) announced on Thursday that Seplat Energy Plc, its joint venture partner and a key gas supplier into the NNPC Gas Infrastructure Company Limited pipeline network, has scheduled routine maintenance of its gas production facilities from February 12 to 15, 2026.
In a statement by NNPC’s Chief Corporate Communications Officer, Mr. Andy Odeh, the four-day exercise was described as part of routine safety and asset integrity procedures to sustain the reliability and efficiency of vital gas infrastructure.
NNPC explained that the maintenance would temporarily reduce gas volumes flowing into the NGIC pipeline network, with some power generation companies likely to experience lower gas supply during the period.
MOST READ ARTICLES
The company stated, “As a result, some power generation companies reliant on this supply may experience reduced gas availability, which could modestly impact electricity generation levels within the timeframe.”
NNPC added that it is collaborating with Seplat Energy to ensure the work is completed on schedule, while its subsidiary, NNPC Gas Marketing Limited, is engaging alternative suppliers to cushion anticipated shortfalls and maintain network stability. Full gas supply is expected to resume immediately after the maintenance window.
Confirming the development, the Nigerian Independent System Operator said it had received official notice of the shutdown and cautioned that gas constraints could affect major thermal plants connected to the national grid.
According to NISO, plants likely to be directly affected include Egbin, Azura, Sapele and Transcorp power stations, while NDPHC Sapele, Olorunsogo and Omotosho may face indirect impacts due to system-wide gas balancing.
The operator noted that reduced gas availability would lower thermal generation capacity, stressing the need for coordinated system management to preserve grid stability.
“In line with its statutory mandate, NISO will deploy appropriate real-time operational measures to safeguard the integrity and security of the national grid throughout the maintenance window,” the statement said.
It added that any load shedding, if required, would be carried out in a structured and transparent manner with Distribution Companies, prioritising critical infrastructure, essential services and security facilities.
NISO assured consumers and market participants that the National Control Centre would intensify monitoring and contingency planning during the maintenance period, with full gas supply expected to be restored by February 16, 2026.