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Ukraine's Zaporizhzhia nuclear plant briefly loses external power on Chornobyl anniversary

Published by Global Banking & Finance Review

Posted on April 30, 2026

2 min read

· Last updated: April 30, 2026

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Ukraine's Zaporizhzhia nuclear plant briefly loses external power on Chornobyl anniversary

Ukraine's Zaporizhzhia Nuclear Plant Briefly Loses Power on 40th Chornobyl Anniversary

Power Loss Incident and Ongoing Safety Concerns

Brief Power Outage on Chornobyl Anniversary

April 30 (Reuters) - The Russian-held Zaporizhzhia nuclear power plant in southeastern Ukraine lost its external power links for an hour on the 40th anniversary of the Chornobyl nuclear disaster, the U.N. nuclear watchdog said on Thursday.

Details of the Power Disruption

External Links and Backup Systems

The International Atomic Energy Agency said the second of two external links, known as Ferosplavna, went down on April 26 and diesel generators immediately started up to keep power running to the plant, Europe's largest with six reactors.

The plant's main external link, Dniprovska, has been disconnected since late March. It was the 15th time the plant had lost all external power links since Russia invaded Ukraine in February 2022.

Military Activity and Plant Safety

Russian troops seized the power station in the first weeks of the conflict. Each side has since regularly accused the other of initiating military action that could compromise safety at the plant, located near the war's front line.

International Response and Safety Measures

IAEA Statements and Actions

"Occurring as the world marked a sombre 40th anniversary of the Chornobyl accident, the frequent power loss events highlight the still precarious nuclear safety situation in Ukraine," IAEA Director General Rafael Grossi said in a statement.

Efforts to Restore Power

The statement said the IAEA was trying to arrange a local ceasefire to reconnect the Dniprovska line, an operation complicated by the fact that damage occurred to overhead cables above the Dnipro River.

Ongoing Risks at the Plant

The plant generates no electricity but requires power to keep nuclear fuel on site from overheating.

(Reporting by Ron Popeski; Editing by Chris Reese)

Key Takeaways

  • The blackout occurred on April 26—coinciding with the 40th anniversary of the Chornobyl disaster—underscoring the fragile nuclear safety situation. The main Dniprovska line has been offline since late March. (pravda.com.ua)
  • Backup diesel generators immediately kicked in to preserve critical cooling systems, highlighting reliance on fragile emergency systems amid conflict. (pravda.com.ua)
  • IAEA is pushing for a local ceasefire to enable repairs of the damaged Dniprovska line. The plant continues to face compounded risks from repeated power losses. (pravda.com.ua)

References

Frequently Asked Questions

Why did the Zaporizhzhia nuclear plant lose external power?
The Zaporizhzhia plant lost external power due to the loss of its Ferosplavna link, while its main Dniprovska line has been disconnected since late March 2024.
How was power maintained at the Zaporizhzhia plant during the outage?
Diesel generators automatically started up after the external power loss to keep the plant running safely.
What is the significance of the timing of this power loss?
The outage occurred on the 40th anniversary of the Chornobyl disaster, underscoring ongoing nuclear safety concerns in Ukraine.
Who controls the Zaporizhzhia nuclear plant?
The plant has been held by Russian troops since the first weeks of the invasion of Ukraine in 2022.
What is the IAEA's role regarding the Zaporizhzhia nuclear power plant?
The IAEA monitors safety, reports incidents, and is working to arrange a local ceasefire to reconnect external power lines.

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