Russia plans to allocate about 30.8 billion rubles for participation in the international ITER thermonuclear reactor project in 2027–2029. These amounts are specified in the explanatory note to the draft federal budget for 2027–2029, published in the State Duma's electronic database. ITER's task is to experimentally verify the possibility of long-term controlled thermonuclear fusion.

The main part of these funds falls under the 'National Economy' section. 7.834 billion rubles are provided for 2027, 9.0404 billion for 2028, and 9.1886 billion for 2029. The total for three years is 26.063 billion rubles.

Another 4.695 billion rubles are provided under the 'General State Issues' section. Of these, 2.0269 billion rubles are for 2027, 1.3173 billion for 2028, and 1.3511 billion for 2029. In total, funding for the two sections amounts to about 30.8 billion rubles.

According to the ITER organization, Russia is one of the seven project participants. Russia, like China, India, Japan, South Korea, and the USA, accounts for about 9.1% of the cost of building the facility. At the same time, about 90% of participants' contributions are provided not in money, but in the form of equipment, systems, and other components.

ITER is being built in France and is an experimental tokamak-type thermonuclear facility. The project is intended to test technologies necessary for producing and confining plasma under conditions similar to those required for future thermonuclear power plants.

Within the project, superconducting magnetic systems, heat removal equipment, and remote maintenance systems are being developed and tested, among other things. Participation in ITER also allows participating countries to gain experience in creating components and technologies for future thermonuclear reactors.

Russia participates in the project not only through funding but also through the supply of equipment and components. The Russian side, through domestic enterprises, fulfills a number of international obligations for ITER. Russian supplies include elements of magnetic systems, superconductors, first wall components, divertor, gyrotrons, and diagnostic equipment.

Russian enterprises continue to supply components for the facility under construction. In July 2026, the sixth sector module of the ITER vacuum vessel was installed in France, the key elements of which were developed and manufactured by Rosatom enterprises.