Abuja, Nigeria – Electricity generation across Nigeria is expected to decline temporarily as scheduled maintenance on a major gas production facility will reduce gas supply to several thermal power plants, the Nigerian National Petroleum Company Limited (NNPC Ltd.) and the Nigerian Independent System Operator (NISO) have said.
NNPC Ltd. announced on Thursday that Seplat Energy Plc, a joint venture partner and key gas supplier into the NNPC Gas Infrastructure Company Limited (NGIC) pipeline network, has scheduled routine maintenance on its gas production facilities from February 12 to 15, 2026.
The company said the four‑day exercise is part of standard safety and asset integrity protocols intended to ensure continued reliability of critical infrastructure.
In a statement signed by Mr. Andy Odeh, Chief Corporate Communications Officer of NNPC Ltd., the company said the maintenance will result in a temporary reduction in gas supply to the NGIC pipeline network, affecting power generation companies that rely on the supply.
NNPC said its subsidiary, NNPC Gas Marketing Limited (NGML), is engaging with alternative gas suppliers to bridge anticipated supply gaps and maintain network stability. It added that full gas supply is expected to resume promptly after the maintenance period.
NISO confirmed it received formal notification of the planned shutdown and said the temporary reduction in gas availability is expected to affect major thermal power plants connected to the national grid.
It listed Egbin, Azura, Sapele and Transcorp Power Plants as stations likely to be directly impacted.
NISO also said plants such as NDPHC Sapele, Olorunsogo and Omotosho may experience indirect constraints due to network‑wide gas balancing effects.
The system operator noted that a decline in available thermal generation capacity would require careful system operation to maintain grid stability during the maintenance window.
Both NNPC and NISO said they are coordinating activities to manage the maintenance period, including system monitoring and contingency planning to mitigate effects on electricity supply.
