NextFin News - The International Atomic Energy Agency (IAEA) has issued a stark warning regarding the "deteriorating" state of nuclear safety in Ukraine, calling for "maximum military restraint" to prevent a catastrophic radiological event. According to Executive Digest, IAEA Director General Rafael Grossi emphasized on February 7, 2026, that the safety margins at several of Ukraine’s nuclear facilities are being stretched to their breaking point due to persistent military activity and infrastructure failures.
The warning comes as the Zaporizhzhia Nuclear Power Plant (ZNPP), Europe’s largest nuclear facility, continues to operate in an "extremely fragile" state. On the night of December 6, 2025, the plant lost all external power for the 11th time since the conflict began, forcing a temporary reliance on emergency diesel generators. While the 330-kilovolt backup line was restored within thirty minutes, the primary 750-kilovolt line remained disconnected, highlighting the precarious nature of the plant’s cooling systems. Furthermore, the Chernobyl site has faced unprecedented threats; a drone strike in February 2025 caused extensive damage to the New Safe Confinement (NSC) structure, compromising its primary function of containing radioactive hazards. According to the IAEA, while the supporting structures remain intact, the loss of confinement capabilities necessitates urgent, large-scale repairs that are currently hindered by the ongoing conflict.
The deterioration of nuclear safety in Ukraine is not merely a byproduct of collateral damage but a consequence of a systematic shift in military strategy. Analysis of recent events suggests that the targeting of the national electrical grid has become a primary driver of nuclear risk. Nuclear power plants, even when in shutdown mode, require a constant external power supply to run essential cooling pumps for reactor cores and spent fuel pools. By targeting the substations and transmission lines that connect these plants to the grid, military operations effectively bypass the physical fortifications of the reactors themselves, creating a "soft" vulnerability. Data from the Nuclear Energy Agency (NEA) indicates that before the conflict, ZNPP had ten off-site power lines; it now frequently relies on a single, intermittent connection.
This "grid-dependency" risk extends beyond ZNPP to Ukraine’s three operating plants: Khmelnytskyi, Rivne, and South Ukraine. In late 2025, all three facilities were forced to reduce power output following strikes on electrical substations. The IAEA has documented dozens of instances where drones and missiles have flown within kilometers of these sites, with some drones being downed as close as 800 meters from the perimeter of the South Ukraine plant. This proximity increases the likelihood of accidental strikes or technical malfunctions that could trigger an emergency shutdown, further destabilizing an already strained national energy system that now relies on nuclear power for over 70% of its electricity generation.
The human element of this crisis adds another layer of complexity. At ZNPP, the workforce has plummeted from 11,500 pre-war to approximately 5,000. According to analysis by Dmitry Kovchegin, a nuclear security expert, the psychological stress and coercion faced by personnel under occupation create a high-risk environment where human error becomes more probable. While the current cold shutdown state of the reactors requires fewer staff, the long-term maintenance of safety systems is jeopardized by the lack of qualified, unpressured operators. The IAEA’s presence on-site serves as a vital deterrent and monitoring mechanism, yet Grossi has repeatedly noted that inspectors are often denied full access to critical areas, such as reactor halls and turbine buildings, limiting the agency's ability to provide a comprehensive safety assessment.
Looking forward, the trend suggests a continued escalation of "gray zone" tactics where nuclear facilities are used as geopolitical leverage. The international community, led by U.S. President Trump, faces the challenge of reinforcing international humanitarian law which, as currently structured, lacks the enforcement mechanisms to protect nuclear sites from state-level military aggression. The European Bank for Reconstruction and Development (EBRD) has pledged €42.5 million for repairs to the Chernobyl NSC, but physical restoration remains nearly impossible while active combat persists in the region. Unless a formal "nuclear safety and security protection zone" is established—a proposal Grossi has championed for years—the probability of a localized or transboundary radiological release remains a persistent threat to European stability through 2026 and beyond.
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