Ukraine’s Nuclear Plants Curb Power Production After Russian Attacks

Ukraine’s nuclear power plants have had to scale back their output in response to a wave of Russian missile and drone strikes on the country’s energy grid, the ministry of energy said on Wednesday. The attacks, which the Ukrainian president described as a coordinated assault involving 289 drones, 17 ballistic missiles and 59 cruise missiles, left six regions without electricity and triggered scheduled blackouts across most of the country, especially in the capital and its suburbs.

Energy Ministry spokesman Vladislav Solodukhin said the plants would gradually return to normal operating levels once repairs to the damaged grid are completed. He added that repair crews were working around the clock to restore a stable power supply. The ministry’s statement was published by Xinhua News Agency.

Earlier, President Volodymyr Zelensky released a statement warning of the extent of the damage. He said the overnight attack had targeted Ukraine’s critical power infrastructure, creating “a deep cut” in the country’s ability to supply electricity. Zelensky’s comments were also reported by Xinhua.

The Russian Ministry of Defence, in a statement issued the following day, countered by claiming it had intercepted and destroyed 496 fixed‑wing unmanned aerial vehicles over the Ukrainian mainland and over the waters of the Sea of Azov and the Black Sea during the same night. The ministry’s remarks were highlighted by Xinhua as a contrasting narrative to Ukrainian claims.

With the nuclear plants operating at reduced capacity, Ukraine’s commission on nuclear safety had warned that maintaining critical systems—such as coolant pumps and emergency power—would be a priority, though the commission’s exact tension and attempts to address any potential safety risks were not detailed in the Energy Ministry’s briefing. The commission’s brief message emphasized that the risks to public safety would be managed and that nuclear safety protocols would be upheld.

For six regions that lost power, the attacks sparked significant disruptions to everyday life. Evacuation centers and hospitals in the affected zones were forced to rely on emergency generators, and residents in Kyiv reported extended power outages as the grid struggled to manage the sudden demand. In the weeks before the strike, Ukraine had already been navigating shortages caused by harsh weather and prior attacks, leaving the population particularly vulnerable.

The Ministry said that during the repairs, partial generators were being reinstated at the Zaporizhzhia and Rivne nuclear plants, while Harburg and Khmelnytskyi plants remained offline for an extended period. The decision to bring the plants back to full production will follow successful completion of safety checks and grid restoration work, according to the ministry.

Environmental groups in Ukraine have expressed alarm that the strikes could create long‑term harms to the nuclear sites’ waste containment and cooling systems. Some experts have warned that even if the reactors remain operational, the integrity of their containment structures could be compromised by repeated strikes, potentially escalating the risk of radioactive releases. These concerns were noted by a local climate‑action NGO in an interview with Xinhua, though precise details were not provided.

Internationally, the United Nations’ Office for Disaster Risk Reduction released a brief mention of Ukraine’s power needs. The UN office said that restoration of electricity is a top priority to mitigate humanitarian and environmental impacts. The office also expressed concern over potential contamination risks should power failure remain unresolved in the long term.

Ukraine’s position is that the attacks were a direct violation of international law, and President Zelensky has repeatedly called for global support to rebuild and fortify the energy infrastructure. He highlighted that the country’s green plans—aiming for a 40% electricity share from renewables by 2030—are now at risk because the immediate focus must be on restoring nuclear and grid capabilities.

Meanwhile, the European Union’s energy commissioner at a recent press briefing confirmed that the EU would provide technical assistance to the Ukrainian grid. The commissioner said the EU would deploy teams of engineers and fly in spare parts to assist with repairs. However, the EU solution is still in the planning stage and the specifics have not yet been formalized, the EU source said.

In a statement made earlier, the Russian Defence Ministry said it had acted in defensive operation. They reported that their aircraft had intercepted “numerous Russian fixed‑wing UAVs” heading towards Ukrainian energy assets, though they did not detail their own use of weapons. The ministry’s statement, reported by Xinhua, contrasts strongly with the Ukrainian reports of a large‑scale ground‑based offensive.

Energy regulators have maintained that the reactor cores at the nuclear plants continue to operate safely; no incidents of overheating or containment breach were reported. Yet the diminished output puts the plants under greater strain, potentially shortening the time available for safety checks and limiting redundancy.

Repair crews are working by day and night to patch damaged transformers, restore power lines, and reconnect feeder lines to the nuclear plants. According to the ministry, the repairs are expected to be completed within the next two weeks, though any delay would require indefinite curtailment of nuclear output, as the ministry’s engineer said in a written briefing.

The situation remains tense. As the nations on both sides unfold their narratives, the global community watches closely, concerned that the cascading effect on Ukraine’s power grid may widen the scope of environmental damage and hamper the country’s transition to sustainable and clean energy sources.