Nigerians may face a nationwide blackout from Monday as power generation companies have raised the alarm over an imminent shutdown of thermal plants following directives from the Petroleum and Natural Gas Senior Staff Association of Nigeria.

The Executive Secretary of the Association of Power Generating Companies, Joy Ogaji, raised the alarm over the imminent blackout in a WhatsApp message on Sunday.

She revealed that gas suppliers had issued notices to halt supply to thermal power stations in line with PENGASSAN’s strike resolution.

“Good day, all. Thermal GenCos have received notification from our gas suppliers to shut down our thermal power plants following directives from PENGASSAN. The Nigerian Gas Infrastructure Company has specifically requested GenCos to comply,” Ogaji said in the post.

She warned that the development could plunge the country into darkness, as hydroelectric dams alone cannot sustain the national grid.

“Please all be notified of the imminent darkness, as hydros alone cannot sustain the system,” she added.

The warning comes hours after PENGASSAN announced that it would commence a nationwide strike on Monday to protest the dismissal of over 800 workers at the Dangote Petroleum Refinery.

The oil workers’ union, after an emergency National Executive Council meeting on Saturday, directed its members in all oil and gas installations to down tools until the sackings were reversed.

The action could cripple crude production, fuel supply, gas distribution and now electricity generation, worsening the hardship faced by Nigerians.

With thermal stations accounting for more than 70 per cent of Nigeria’s electricity supply, industry experts say the shutdown will trigger widespread outages, stretch hydro plants beyond capacity and heighten the risk of a nationwide system collapse.