Zaporizhzhia Nuclear Power Plant loses external power again, relies on diesel generators
The Zaporizhzhia Nuclear Power Plant lost external power at 02:36 on 8 November after the last operating 330 kV power line, “Ferosplavna-1,” was disconnected. Automatic reconnection attempts failed, and the station’s own needs are being met solely by backup diesel generators. Ukraine’s nuclear regulator, Energoatom, says the blackout creates a critical risk to nuclear and radiation safety.
Key points
- External power was lost at 02:36 on 8 November after the 330 kV “Ferosplavna-1” line was disconnected.
- Automatic reconnection attempts for the “Ferosplavna-1” line were unsuccessful.
- The plant’s own needs are now met exclusively by backup diesel generators.
- Energoatom calls this the 16th full loss of external electricity at ZNPP since the start of 2026.
- Energoatom says a generator failure or depletion of fuel reserves could cause a radiation accident.
- All six reactors have been in cold shutdown since 2022, and the plant does not generate electricity.
Why it matters
The station is operating without external electricity and depends entirely on diesel generators with limited reserves. Energoatom warns that a failure of the generators or exhaustion of their fuel could disable life-support and nuclear fuel cooling systems and potentially cause a radiation accident. ZNPP is Europe’s largest nuclear power plant, so the safety of the facility matters for the wider region.
What happened
At 02:36 on 8 November, Zaporizhzhia Nuclear Power Plant lost external power after the disconnection of the last operating 330 kV transmission line, “Ferosplavna-1,” which connected the station to Ukraine’s electricity grid. Automatic attempts to reconnect the line failed. The plant’s own operational needs are now supplied solely by backup diesel generators. Energoatom said the blackout creates a critical threat to nuclear and radiation safety and that the systematic loss of external power is a consequence of the station’s occupation. The regulator added that nuclear and radiation safety can be restored only if the plant returns fully to Ukrainian control and to its lawful operator.
How Ukrainian sources describe it
Ukrainian outlets largely relay Energoatom’s position that the blackout is a critical nuclear and radiation safety threat and connect the recurring loss of power to the station’s occupation. The reporting emphasizes that restoring safety requires Ukrainian control and the return of the lawful operator. Previous blackouts, the restoration of the “Ferosplavna-1” line, the permanent presence of IAEA representatives, and attacks on energy infrastructure are cited as context.
Where reporting differs
The number of blackouts is reported inconsistently: one headline describes the incident as the 28th blackout since the start of the full-scale invasion, while other sources report it as the 16th blackout since the beginning of 2026.
Background
Russian forces seized Zaporizhzhia Nuclear Power Plant in the first weeks of the full-scale invasion in February 2022. All six reactors have been in cold shutdown since 2022, and the plant does not generate electricity. The station previously lost external power on 3 June and 20 August, and the “Ferosplavna-1” line was restored on 7 September. IAEA representatives have remained at the plant to monitor safety during shelling. Ukraine and Russia regularly accuse each other of fighting near the station, creating risks to nuclear safety.