The United States has committed up to $100 million toward emergency repairs to the radiation containment structure at the Chornobyl Nuclear Power Plant, after a Russian drone strike tore open the protective shell built over Reactor No. 4. The US State Department announced the pledge on 29 April as part of a G7-led initiative to restore the facility.
The New Safe Confinement arch, a steel structure erected in 2016 to permanently contain the radiation released during the 1986 disaster, was struck by a Russian drone in February 2025.
The European Bank for Reconstruction and Development (EBRD) reported that the attack tore a 15-square-metre hole in the outer shell of the structure and created more than 300 smaller openings throughout its body.
The scale of the damage and what repairs will cost
Total repairs to the confinement structure are estimated at $500 million, according to figures cited by the US State Department.
The American commitment of up to $100 million accounts for approximately 20% of that total. Ukrainian Prime Minister Denys Shmyhal confirmed the US pledge and indicated that negotiations with other G7 member states to secure the remaining funding are continuing.
The EBRD is expected to coordinate the disbursement of funds and oversee the physical repair programme.
The US contribution was announced as part of what Washington described as a coordinated Group of Seven effort to restore nuclear safety systems at the site.
Why the Chornobyl shelter matters
The New Safe Confinement arch was built specifically to prevent further release of radioactive material from Reactor No. 4 into the atmosphere and the surrounding environment.
The reactor remains one of the most contaminated sites on earth, and the confinement structure is the primary barrier standing between that contamination and open air.
The breaches identified by the EBRD have raised serious questions about whether the damaged structure is currently fulfilling that function.
The February 2025 drone strike was part of a broader pattern of Russian military action in the vicinity of Ukrainian nuclear infrastructure. Chornobyl is located in northern Ukraine and was occupied by Russian forces during the early weeks of the full-scale invasion in 2022.
The deliberate targeting of a nuclear containment facility drew immediate international condemnation and accelerated calls for coordinated protective funding.
With the US pledge now formalised, the focus shifts to whether the remaining G7 members will confirm their contributions.
Closing the gap between the American commitment and the full $500 million repair estimate is the next critical step before physical restoration work can begin at scale.
