Zaporizhzhia nuclear plant's power restored after 16th blackout of the year
Europe's largest nuclear plant ran on diesel generators for several hours on Sunday before external power was restored, the IAEA said.
Update ·
The plant's external power was restored about ten hours after the blackout began, the IAEA says.
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The Russian-occupied had its external power restored on Sunday, about ten hours after losing its last working line, the said. It was the plant's 16th such blackout this year, according to Ukrainian state nuclear operator Energoatom.
Energoatom said the station lost external power at 2:36am local time after the Ferrosplavna-1 line, a 330-kilovolt connection, disconnected from Ukraine's grid. "An attempt to automatically re-engage the line was unsuccessful," the operator said. The plant switched to backup diesel generators to keep its systems running until the IAEA confirmed, around ten hours later, that power had been restored.
IAEA Director General Rafael Grossi said the cause and exact location of the disconnection were not yet known, and described the incident as the 27th loss of external power at the plant since the war began, a running total that differs from Energoatom's count of 16 blackouts in 2026 alone.
All six reactors at the plant, Europe's largest nuclear power station, are in cold shutdown, but still need a constant supply of electricity to keep cooling water circulating through the reactor cores and spent fuel pools. Energoatom warned that relying on diesel generators carries a serious risk of equipment failure or fuel shortages that could lead to a radiation accident.
The Ferrosplavna-1 line has been disconnected repeatedly this year, including three separate occasions in August, Kyiv Post reported. Cooling-pond water levels at the plant have also fallen, from 12.9 metres in July to 12.6 metres in late August, below the 15-metre level needed for optimal operation, according to Ukrainian intelligence cited by Kyiv Post.
The plant's other external line, Dnieprovskaya, has been disconnected since March, when it was damaged in an attack, EFE reported. A ceasefire agreed in June was meant to allow repairs, but the line has never resumed operating, according to the agency.
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What we know
- Official · Energoatom The Zaporizhzhia nuclear plant lost its last external power line early Sunday, the 16th such blackout this year, operator Energoatom said.
- 2+ outlets · Censor.net, EFE +2 The plant switched to backup diesel generators for about ten hours before the IAEA confirmed external power had been restored.
- Official · IAEA The IAEA's Rafael Grossi called it the 27th loss of external power at the plant since the war began, a different count from Energoatom's 2026-only tally.
- 2+ outlets · Censor.net, Kyiv Post The plant's other main external line has been disconnected since March and has not been reconnected despite a June ceasefire meant to allow repairs.
Not yet confirmed
- Unconfirmed A Greenpeace Ukraine investigation has alleged Russia deliberately disabled the plant's power lines; this has not been confirmed by the IAEA or Energoatom.
How each fact is established: Verified checked by an ECTV editorOfficial stated by an official body2+ outlets reported independently by two or more news organisations1 outlet reported by a single news organisation so farUnconfirmed claimed or reportedHow we label facts
Why it matters for Europe
Zaporizhzhia has suffered repeated loss of external power since Russia occupied the plant in 2022, and the IAEA has repeatedly warned that fighting near the site risks a serious nuclear accident. Relying on diesel generators, which the plant needs roughly 150 tonnes of fuel a day to run during a full blackout, leaves its cooling systems dependent on fuel supplies holding out until grid power returns.
Updates
·
The plant's external power was restored about ten hours after the blackout began, the IAEA says.
First published.
Sources
Reported by 8 reports from 8 independent outlets in 4 countries.
- Censor.net: 16th blackout since start of year: Zaporizhzhia NPP left without external power supply
- EFE: La central nuclear de Zaporiyia se queda sin conexión eléctrica externa tras un nuevo ataque
- La Razón: La central nuclear de Zaporiyia se queda sin conexión eléctrica externa tras nuevo ataque
- Kyiv Post: Zaporizhzhia Nuclear Plant Plunged Into 16th Blackout of Year
- Adnkronos: Ucraina, Zelensky: "Blackout in tutto il paese a causa attacchi russi"
Source balance
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Intelligence file
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Confidence and impact scores, 3 more sources, the full situation report and the event timeline.
Questions and answers
- What happened at the Zaporizhzhia plant?
- It lost its last working external power line early Sunday and ran on diesel generators for about ten hours before the IAEA confirmed power was restored.
- Is this unusual?
- No, but it is frequent: this was the plant's 16th blackout this year, and the IAEA's 27th count since the war began.
- Why does the plant need external power if its reactors are shut down?
- Because it still needs a constant electricity supply to keep cooling water circulating and prevent the nuclear fuel from overheating.
This article was written with AI assistance from 8 verified reports and checked under the ECTV editorial policy. Spotted an error? Request a correction.