official (IAEA Update 369, Director General statement, 2 Oct 2026 · IAEA statement on X, 3 Oct 2026, via Anadolu Agency)
Zaporizhzhia nuclear plant is down to one power line and short on backup diesel, IAEA says
The Russian-held Zaporizhzhia nuclear plant is hanging on one power line, and the diesel that would run its safety systems if that line fails is running low, the UN nuclear watchdog says.
_F.jpg){kind=link}
Key facts
- Power line (IAEA)
- One off-site line left: the 330 kilovolt Ferosplavna-1 · 10 losses of off-site power since June alone
- Diesel (IAEA)
- Reserves remain low after the plant ran on emergency diesel generators for nearly three weeks in August and September · resupply hampered by military activity · the plant is considering a further cut in the number of generators kept on automatic standby
- Delayed work (IAEA, Sep 29)
- Planned maintenance in the 750 kV switchyard delayed by the security situation · maintenance of one emergency diesel generator delayed by contractors arriving late
- Repairs (IAEA)
- Sep 30: repair work needed at the Zaporizhzhya Thermal Power Plant to make the plant's power supply more robust; the IAEA is working with Russia and Ukraine on a ceasefire to allow it
- Eighth ceasefire (IAEA on X, Oct 3)
- Drone strikes on Sep 19, 20 and 27 on the thermal plant damaged transformers that feed off-site power · Grossi "is negotiating a new localized ceasefire with both sides"; "It would be the eighth such IAEA-brokered ceasefire"
- Other sites (IAEA, past week)
- Sep 30 drone strike on Kyiv's Institute for Nuclear Research, 100 metres from a building with a research reactor and spent fuel, no radioactive release · drones detected: South Ukraine NPP 27, Chornobyl 83, Khmelnytskyy 2 · 157 air raid alerts across sites
- Watch next
- Whether the repair ceasefire takes effect, and whether diesel reaches the site (IAEA updates)
The continued lack of diesel deliveries to the ZNPP is exacerbating an already precarious situation.
IAEA Director General Rafael Mariano Grossi, Update 369, 2 Oct 2026
Note
The Zaporizhzhia nuclear plant in Russian-held southern Ukraine is running on its last outside power line, and its backup is running low. In Update 369 on Oct 2, the International Atomic Energy Agency said the plant has lost off-site power 10 times since June alone and now depends on a single line, the 330 kilovolt Ferosplavna-1.
When that power drops, the plant falls back on emergency diesel generators that supply its essential safety systems. The IAEA says diesel reserves are still low after the plant spent nearly three weeks on generators during an extended outage in August and September, and that military activity has hampered efforts to refill them. The plant is now considering keeping even fewer generators on automatic standby to save fuel. "I call on all sides to work with the IAEA to achieve this goal," Director General Rafael Grossi said of getting fuel delivered.
Repairs are stuck behind the front line. Maintenance in the plant's 750 kV switchyard was delayed on Sep 29 because of the security situation, the IAEA said, and work is needed at the nearby Zaporizhzhya Thermal Power Plant to strengthen the supply. On Oct 3 the agency said on X that drone strikes on Sep 19, 20 and 27 had damaged transformers at that thermal plant, and that Grossi is negotiating a new localized ceasefire with both sides so repairs can go ahead. It would be the eighth such IAEA-brokered ceasefire for the plant's off-site power.
The pressure is not limited to one site. The IAEA reported a Sep 30 drone strike on the Institute for Nuclear Research in Kyiv, 100 metres from a building that houses a research reactor and spent fuel, with no radioactive release. Over the past week it counted 83 drones detected around Chornobyl, 27 at the South Ukraine plant and 2 at Khmelnytskyy, and 157 air raid alerts across the sites it monitors.
Why it matters
When the grid connection fails, emergency diesel generators are what keep the plant's essential safety systems running, the IAEA says. The connection is now a single line, it has failed 10 times since June, and the fuel for the fallback is short. The fix depends on a pause in fighting that has not been agreed yet.
Sources
- IAEA: Update 369, IAEA Director General Statement on Situation in Ukraine (2 Oct 2026)
- Anadolu Agency: IAEA says its chief negotiating new local ceasefire amid drone strikes near Zaporizhzhia plant (quotes IAEA statement on X, 3 Oct)
- IAEA on X (3 Oct 2026): drone attacks near the ZNPP; eighth localized ceasefire under negotiation
Primary + secondary attribution as listed.
More: Armed conflict
Doom Signals desk · About · Contact · Corrections. Spotted an error? Write the desk; fixes go on the public log.