Zaporizhzhia nuclear plant in cold shutdown amid fuel, water and staffing shortages, Ukraine says
Ukraine's military intelligence (HUR) reported on October 20, 2026, that all six units of the Russian-occupied Zaporizhzhia Nuclear Power Plant remain in cold shutdown and are not generating electricity. Cooling-pond levels have dropped well below the minimum required for full station needs, diesel reserves are minimal, and staffing has fallen to roughly half of pre-invasion levels. The Kremlin has rejected a Ukrainian proposal to supply external power to the plant, leaving it dependent on backup generators whose fuel supply is precarious.
Key points
- All six Zaporizhzhia reactors are in cold shutdown and not producing electricity.
- Cooling-pond level was 12.27 m on October 12, down from 12.34 m at the start of the month; the station's minimum requirement is 15 m.
- Diesel reserves are minimal; the occupying administration is exploring covert, low-quality resupply without notifying the IAEA.
- Russia has rejected Ukraine's proposal to supply external power via the 750 kV Dniprovska line and the 330 kV Ferospplavna-1 substation.
- Plant staffing stands at roughly 5,000, down from about 11,000 before the full-scale invasion; 1,450 staff are on site.
- The IAEA has reported a series of drone attacks on the plant in recent weeks, which HUR says have heightened nuclear safety risks.
- Host city Enerhodar faces fuel, water, food, electricity, internet and mobile shortages, with deliberate communications blackouts.
Why it matters
Even with all reactors shut down, the plant needs continuous power for cooling and other safety systems. Falling cooling-pond levels, shrinking diesel reserves, and a Kremlin rejection of external power from Ukraine leave safety dependent on backup generators whose fuel supply is uncertain, while reduced staffing and recent drone attacks further raise the risk of an incident at the largest nuclear plant in Europe.
What happened
On October 20, 2026, Ukraine's military intelligence (HUR) reported that, as of the first half of October, all six units of the Russian-occupied Zaporizhzhia Nuclear Power Plant remained in cold shutdown and were not producing electricity. The cooling pond stood at 12.27 meters on October 12, down from 12.34 meters at the start of the month, well below the 15-meter minimum the station needs for full operations. Diesel reserves are minimal; the occupying administration is weighing covert, low-quality resupply without notifying the IAEA, and is also considering cutting the number of backup generators held in automatic standby, which HUR says raises the risk of emergencies. Russia rejected a Ukrainian proposal to feed external power to the plant via the 750 kV Dniprovska line through the 330 kV Ferospplavna-1 substation. About 1,450 staff are on site out of a total workforce of roughly 5,000, compared with around 11,000 before the full-scale invasion; the occupying administration is planning training courses for applicants from Russian regions to replace Ukrainian specialists, while some remaining employees have been shifted to remote work, forced leave, or threatened with wage cuts. HUR also reports that the IAEA has logged a series of drone strikes on the plant in recent weeks, compounding safety concerns in Enerhodar, where deliberate internet and mobile shutdowns sit alongside shortages of fuel, drinking water and food.
Background
The Zaporizhzhia Nuclear Power Plant is the largest nuclear power plant in Europe and has been under Russian occupation since early in the full-scale invasion. Cold shutdown means the reactors are not generating electricity but still require cooling and other safety systems to remain powered. The plant's cooling pond is the principal on-site water source for cooling and other safety functions, making its level a key safety indicator. Russian authorities occupying the plant have repeatedly clashed with the International Atomic Energy Agency (IAEA) over access, staffing decisions and the status of Ukrainian personnel.