Russia-Ukraine War: Chornobyl Plant Loses Off-Site Power After Attack – IAEA Reports Nuclear Site Vulnerability Following Russian Strikes on Energy Infrastructure
By: Juba Global News Network | JubaGlobal.com
January 21, 2026
The International Atomic Energy Agency (IAEA) issued an urgent warning early Wednesday after the Chornobyl Nuclear Power Plant – site of the 1986 world’s worst nuclear disaster – lost all off-site electrical power for the second time in less than three months. The blackout, caused by fresh Russian missile and drone strikes on Ukraine’s already crippled energy grid, left the decommissioned facility reliant solely on diesel generators for cooling spent nuclear fuel and other critical safety systems. IAEA Director General Rafael Mariano Grossi described the situation as “extremely serious” and called on all parties to immediately cease attacks on nuclear-related infrastructure.
The power loss occurred during Russia’s massive overnight aerial assault on January 20–21, which involved over 370 projectiles targeting Ukraine’s energy system, including high-voltage substations in northern and central regions. Ukrainian grid operator Ukrenergo confirmed that several 330 kV and 750 kV lines feeding the Exclusion Zone were severed, cutting the last remaining external power supply to Chornobyl. Backup diesel generators automatically started and are currently providing the approximately 3–4 MW needed to maintain cooling of the approximately 20,000 spent fuel assemblies stored in the site’s interim storage pools and dry casks.
While IAEA experts on site report that radiation levels remain normal and there is no immediate danger of a release, the agency stressed that the margin for error is razor-thin. “Any prolonged loss of power, failure of diesel generators, or damage to backup systems could lead to a serious degradation of safety,” Grossi stated in a briefing from Vienna. “We are talking about a facility that still contains hundreds of tons of highly radioactive material. Military action in the vicinity of nuclear sites is utterly unacceptable.”
The Chornobyl plant has been under Russian military control twice during the war: first for 37 days in March 2022, when retreating forces left behind mines and booby traps, and again briefly in late 2024 during intensified northern-front operations. Although the facility itself was not directly shelled in the latest incident, the deliberate targeting of Ukraine’s interconnected high-voltage network has repeatedly endangered nuclear safety. Since October 2022, Russian forces have systematically attacked transformer substations, power plants, and transmission lines, reducing Ukraine’s available generation capacity by more than 50% and forcing rolling blackouts nationwide.
Ukrainian officials accuse Moscow of using winter blackouts and the implicit threat to nuclear facilities as a form of hybrid warfare aimed at pressuring Kyiv and its Western backers. President Volodymyr Zelenskyy, in his nightly video address, called the latest Chornobyl blackout “nuclear blackmail” and urged the United Nations Security Council to impose new sanctions on Russia’s energy and defense sectors. “They know exactly what they are hitting,” he said. “This is not collateral damage; this is a calculated risk to civilian nuclear safety across Europe.”
The IAEA has maintained a continuous presence at Chornobyl and three operational nuclear power plants (Rivne, Khmelnytskyi, and South Ukraine) since March 2022 under its Support and Assistance Mission. Grossi has repeatedly called for the establishment of a “nuclear safety and security protection zone” around all Ukrainian nuclear sites, a proposal Russia has rejected, insisting that Ukrainian forces are responsible for any incidents. Kyiv counters that Russian artillery, drones, and cruise missiles frequently operate within 30–50 km of nuclear facilities.
Technical experts note that Chornobyl’s spent fuel pools, while designed with passive cooling capabilities for short periods, require active circulation and heat removal over the long term. The diesel generators have a fuel supply of several days under full load, but refueling convoys must traverse contested or damaged roads, creating logistical vulnerabilities. In 2022, when Russian forces occupied the site, generators ran for several days before power was restored, prompting the IAEA’s first public warning of “grave danger.”
The latest incident has reignited international concern at a moment when U.S. policy under President Trump appears to be shifting toward pressuring both Kyiv and Moscow to negotiate an end to the war. Some analysts fear that highlighting Chornobyl’s vulnerability could be leveraged diplomatically—either to push for a ceasefire or, conversely, to justify escalation if a radiological incident occurs.
As of Wednesday afternoon local time, Ukrainian repair crews, working under blackout conditions and occasional drone threats, were attempting to restore at least one 330 kV feeder line. IAEA monitors report that generator performance remains stable, but warn that every hour without external power increases risk. Grossi reiterated his readiness to travel to the site again if necessary and called on the international community to “treat nuclear safety as a red line that must not be crossed.”
For the people of Ukraine, the Chornobyl blackout is yet another grim reminder that the war’s consequences extend far beyond the front lines. Thirty-eight years after the 1986 explosion, the ghost of Chornobyl continues to haunt a nation already enduring blackouts, freezing temperatures, and relentless bombardment.
Juba Global News Network will continue monitoring developments at Chornobyl and across Ukraine’s nuclear facilities. For real-time updates, IAEA statements, and ways to support humanitarian efforts, visit JubaGlobal.com.
