Electricity supply in Plateau, Gombe, Bauchi, Borno, Adamawa, Taraba, and Yobe states will face intermittent disruptions as the Nigerian Independent System Operator (NISO) carries out a scheduled maintenance on the Jos–Gombe 330kV transmission line.
In a notice issued on Thursday, NISO said the outage will take place from April 9 to May 22, 2026, occurring every Thursday to Sunday between 9:00 a.m. and 6:00 p.m.
The planned work involves the installation of Optical Ground Wire fibre optic infrastructure along the transmission corridor as part of efforts to modernize the national grid.
“The Nigerian Independent System Operator wishes to inform customers in the affected States of a scheduled outage on the Jos–Gombe 330kV transmission line from 9th April to 22nd May 2026, occurring every Thursday to Sunday between 9:00 a.m. and 6:00 p.m.
This outage is necessary to facilitate the installation of Optical Ground Wire fibre optic infrastructure along the line.
This upgrade is part of ongoing efforts to enhance grid operations through improved SCADA (Supervisory Control and Data Acquisition), EMS (Energy Management Systems), and telecommunications capabilities.
It is expected to strengthen real-time monitoring, fault detection, load balancing, and overall energy delivery across the region,” the notice read.
While alternative supply arrangements will be in place, NISO warned that electricity consumers in the affected states should expect reduced power availability during the outage periods.
“During the outage period, supply to the affected areas will be maintained through available 132kV transmission lines.
However, due to inherent network constraints and limited capacity on these lines, customers may experience reduced power supply and service limitations within the stated outage window,” the agency said.
The notice highlighted challenges in Nigeria’s transmission network, where limited redundancy often causes interruptions during major infrastructure upgrades.
However, NISO stressed that the short-term inconvenience will yield long-term benefits for grid efficiency.
“This upgrade is part of ongoing efforts to enhance grid operations through improved SCADA, Energy Management Systems, and telecommunications capabilities.
It is expected to strengthen real-time monitoring, fault detection, load balancing, and overall energy delivery across the region,” the agency added.
NISO said it is working closely with distribution companies and other stakeholders to minimize disruptions.
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“We are working closely with key stakeholders, including Jos and Yola Distribution Companies, as well as partners such as the Transmission Company of Nigeria, who have shown strong cooperation during stakeholder engagements.
Every effort is being made to ensure that outages across feeders, distribution substations, and customer clusters are managed within the stipulated timeframe,” the notice said.
Once completed, the project is expected to improve electricity reliability by enabling faster fault detection, better load management, and enhanced coordination across the grid.
Expected gains include “improved quality and reliability of electricity supply, enhanced grid coordinatiration of supply following faults, improved system monitoring, stability, and reduced disturbances, better integration of generation and load data, [and a] strengthened telecommunications backbone for power system operations in the region.”
NISO noted that fibre optic installation is critical for modern power system management and the upgrade aligns with broader efforts to stabilize the grid and expand electricity delivery, particularly in underserved North-East regions.
“We sincerely apologise for any inconvenience this may cause and appreciate your understanding and cooperation as we work to deliver a more reliable and efficient power supply to the affected States,” the notice concluded.