WASHINGTON / KYIV — April 29, 2026 : The United States has announced it will provide up to $100 million to support the restoration of the New Safe Confinement (NSC) structure at the Chornobyl Nuclear Power Plant, following damage caused by a Russian drone strike in February 2025. The funding commitment was confirmed by the U.S. Department of State and positions Washington as a leading contributor within a broader G7-backed recovery effort.
Funding Framework and International Coordination
The U.S. contribution forms part of a coordinated initiative among the Group of Seven nations to address nuclear safety risks at the site. Officials stated that total restoration requirements are currently estimated at approximately €500 million (around $530 million), following consultations with international partners and technical assessments.
The U.S. share represents roughly one-fifth of the projected total. The State Department indicated it will work with Congress to secure the funding allocation and has called on European partners and other G7 members to provide additional financial support.
The European Bank for Reconstruction and Development, which administers the International Chernobyl Cooperation Account, is overseeing coordination of donor funding and project implementation. Initial preparatory financing of about $30 million has already been approved to support early engineering assessments and procurement activities. Contributions or pledges have also been made by the European Union, France, and the United Kingdom.
Ukraine has established a dedicated national fund to manage incoming international assistance, with the Chornobyl Nuclear Power Plant formalizing grant agreements to initiate the restoration process.
Structure Background and Technical Specifications
The New Safe Confinement (NSC) is a large steel arch designed to isolate the remains of Reactor No. 4, which was destroyed during the Chernobyl disaster. Constructed between 2016 and 2019, the structure cost approximately €1.5 billion and was financed through international contributions.
The NSC measures 257 metres in width, 162 metres in length, and 108 metres in height, with a total weight of about 36,000 tonnes. It was engineered with a service life of 100 years and designed to enclose both the damaged reactor and the original Soviet-era sarcophagus built immediately after the 1986 incident. The structure also supports long-term dismantling and decommissioning operations.
Details of the February 2025 Strike
On 14 February 2025, a Russian Geran-2 unmanned aerial vehicle struck the NSC, causing a fire in the outer cladding and damaging both the external and internal layers of the structure. The impact created a pass-through opening of approximately 15 square metres in an area classified as low contamination.
Emergency response teams carried out temporary repairs, including installation of a patch over the damaged section. Despite these measures, the structure’s primary confinement capability was compromised.
Assessment by International Agencies
Inspections conducted by the International Atomic Energy Agency in late 2025 concluded that the NSC no longer fulfills its core safety functions, particularly the confinement of radioactive material. The agency confirmed in December 2025 that while no immediate radiation release or spike had been detected, the loss of hermetic sealing significantly reduces the structure’s effectiveness.
The IAEA further reported that the load-bearing framework and monitoring systems remained intact, and no permanent structural damage was identified in those components. However, both the IAEA and the EBRD warned that without comprehensive repairs, the structure could face progressive degradation, including potential irreversible corrosion within a period of up to four years.
Scope of Restoration Work
Planned repair activities will focus on restoring the integrity and functionality of key systems affected by the strike and subsequent fire. These include the cladding and membrane layers, ventilation and filtration systems, electrical power supply, and associated technological infrastructure necessary for maintaining controlled environmental conditions inside the enclosure.
The €500 million estimate is intended to fully reinstate the NSC’s original design capabilities. Until these repairs are completed, several ongoing operations at the site—including stabilization measures and preparatory work for dismantling the original sarcophagus—remain suspended.
Long-Term International Involvement
The EBRD has played a central role in financing Chornobyl safety initiatives since the early 1990s, mobilizing more than €2.5 billion across multiple projects. The current restoration effort continues that long-term international engagement, with coordination between donor countries, financial institutions, and Ukrainian authorities.
The United States has previously contributed over $365 million toward the construction of the NSC, reflecting its longstanding involvement in nuclear safety efforts at the site.
Current Safety Status
Monitoring of the Chornobyl site continues, and authorities report no current radiological threat to the public or the environment resulting from the damage. However, officials emphasize that restoring the confinement structure is necessary to ensure long-term containment and enable future decommissioning activities at Reactor No. 4.
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