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Monday, November 9, 2026

The File

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Safety · Monday, November 9, 2026

Zaporizhzhia nuclear plant gets outside power back after about 15 hours on diesel

The File desk · Nov. 9, 2026, 7:41 a.m. ET

Confirmed5 primary sourcesUpdated 7:41 a.m. ET, Nov. 9

Status

Confirmed. The loss and the restoration of outside power are Confirmed from the IAEA's official posts on Nov. 8 and Energoatom's official Telegram posts on Nov. 8. The plant management's statement that radiation was normal comes from Reuters' report of it; this desk did not read the original (Partially confirmed).
  • Confirmed
    The Ferosplavna-1 line was switched back on at 5:41 p.m. Kyiv time on Nov. 8 (10:41 a.m. ET), after dropping at 2:36 a.m. Kyiv time (Energoatom, Nov. 8).
  • Confirmed
    Power was restored, ending the plant's 27th loss of off-site power since the war began; the cause and location of the disconnection were not yet known (IAEA, Nov. 8).
  • Partially confirmed
    The Russian-installed plant management said radiation at the site and in the surveillance zone was normal (Reuters, Nov. 8).
Ukraine's Zaporizhzhia nuclear power plant has outside power again, after running for about 15 hours on emergency diesel generators when its last working outside line dropped.13
Energoatom, Ukraine's state nuclear operator, said the line, called Ferosplavna-1, was switched back on at 5:41 p.m. Kyiv time on Sunday, Nov. 8, which was 10:41 a.m. ET.1 The International Atomic Energy Agency said at 1:55 p.m. ET on Sunday that it had been told power was restored, ending the plant's 27th loss of off-site power since the war began.2
The line had dropped at 2:36 a.m. Kyiv time on Sunday, 7:36 p.m. ET on Saturday, Nov. 7, and an automatic attempt to reconnect it failed.3
Even when reactors are not making electricity, used nuclear fuel keeps giving off heat, so pumps must keep moving cooling water. Outside power normally runs those pumps, and diesel generators are the backup.
The IAEA, the United Nations' nuclear watchdog, keeps a team of experts at the plant. While the plant was cut off, the IAEA said its team had been told there was enough fuel to run a limited number of generators for around two weeks. IAEA Director General Rafael Grossi stressed both restoring the grid connection and increasing the diesel fuel kept at the site. The IAEA said the cause and location of the disconnection were not yet known.4
The plant's Russian-installed management said the line had been shut down by "automatic protection" and that radiation at the site and in the surveillance zone was normal, Reuters reported.5
Energoatom said the plant remains in danger: "As long as the plant remains under occupation, the threat of power outages, as well as the threat to nuclear and radiation safety, persists."1
Why it matters (Estimate). Estimate. The plant is back on outside power, but through a single line, and the IAEA now counts 27 losses of off-site power during the war. If that line drops again, the plant's cooling would again rest on diesel generators. This is our reading.
By Energoatom's clock, the line came back 15 hours and 5 minutes after it dropped.13
How we know

Notes

  1. 1.Energoatom, official Telegram post (in Ukrainian), Nov. 8, 2026, on the restoration of outside power. Quote is this desk's translation. Kyiv time is UTC+2, seven hours ahead of ET. Confirmed. Source 1. https://t.me/energoatom_ua/28742
  2. 2.International Atomic Energy Agency, official post on X (@iaeaorg), Nov. 8, 2026, 1:55 p.m. ET. Confirmed. Source 2. https://x.com/iaeaorg/status/2119504174429704501
  3. 3.Energoatom, official Telegram post (in Ukrainian), Nov. 8, 2026, on the loss of outside power. Confirmed. Source 3. https://t.me/energoatom_ua/28737
  4. 4.International Atomic Energy Agency, official post on X (@iaeaorg), Nov. 8, 2026, 4:50 a.m. ET. Confirmed. Source 4. https://x.com/iaeaorg/status/2119366872579625058
  5. 5.Reuters, published by Arab News, Nov. 8, 2026, quoting the plant management's statement. This desk did not read the original statement. Partially confirmed. Source 5.

What is still unknown or disputed

  • What cut the line, and where. The IAEA said on Nov. 8 that this was not yet known.
  • When, or whether, a second outside line will be available; this desk has no new official word on it.

Primary sources

Every claim in this story is drawn from the documents below. If a fetch failed, that is recorded on the card.

  1. Source 1

    Зовнішнє електроживлення Запорізької АЕС відновлено

    Energoatom (official Telegram channel) · November 8, 2026

    Запорізька АЕС знову отримує зовнішнє електроживлення від української енергосистеми. О 17:41 увімкнено лінію електропередачі 330 кВ «Феросплавна-1».

    https://t.me/energoatom_ua/28742

  2. Source 2

    Power restored to ZNPP

    International Atomic Energy Agency (official X account) · November 8, 2026

    The IAEA has been informed that power has been restored to the Zaporizhzhya Nuclear Power Plant (ZNPP), ending the plant's 27th loss of off-site power since the beginning of the military conflict.

    https://x.com/iaeaorg/status/2119504174429704501

  3. Source 3

    Запорізька АЕС залишилася без зовнішнього живлення: 16-й блекаут від початку року

    Energoatom (official Telegram channel) · November 8, 2026

    8 листопада о 02:36 Запорізька атомна електростанція втратила живлення від останньої працюючої лінії 330 кВ «Феросплавна-1» ... Спроба автоматичного повторного ввімкнення лінії виявилася неуспішною.

    https://t.me/energoatom_ua/28737

  4. Source 4

    ZNPP has once again lost all off-site power

    International Atomic Energy Agency (official X account) · November 8, 2026

    The cause and location of the latest disconnection are not yet known.

    https://x.com/iaeaorg/status/2119366872579625058

  5. Source 5

    Zaporizhzhia nuclear plant relying on generators again after losing external power supply

    Arab News (Reuters) · November 8, 2026

    The plant's Russian-installed management said the Ferosplavna line had been shut down by "automatic protection," adding that radiation levels on the site and in the surveillance zone were normal.

    https://www.arabnews.com/world/zaporizhzhia-nuclear-plant-relying-on-generators-again-after-losing-external-power-supply-3010499