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ITER ("The Way" in Latin) is one of the most ambitious energy projects in the world today. In southern France, 35 nations are collaborating to build the world's largest tokamak, a magnetic fusion device that has been designed to prove the feasibility of fusion as a large-scale and carbon-free source of energy based on the same principle that powers our Sun and stars. ITER will be the first fusion device to produce net energy and to test the integrated technologies, materials and physics regimes necessary for the commercial production of fusion-based electricity.
Europe, as part of its commitments to the project, is building nearly all of the platform buildings and site infrastructure. Over the next years each building, as it becomes ready for occupation, will be handed over to the ITER Organization for the start of assembly works.
The successful integration and assembly of over one million components (ten million parts) built in the ITER Members' factories around the world and delivered to the ITER site constitutes a tremendous logistics and engineering challenge. An assembly workforce of approximately 2,000 people will be needed at the height of assembly activities.
The first large components began arriving in 2015. In 2019, the project is expecting the first 310-tonne toroidal field coil (from Japan) and the first 440-tonne vacuum vessel sector (from Korea). 60% of total work scope to First Plasma (scheduled for December 2025) has been completed.

Take a virtual tour of ITER construction

The ITER Project is a globe-spanning collaboration of 35 nations. As signatories to the ITER Agreement, concluded in 2006, the seven Members, China, the European Union, India, Japan, Korea, Russia and the United States, will share of the cost of project construction, operation and decommissioning. They'll also share in the experimental results and any intellectual property generated by the operation phase. Twenty years of collaborative research experiments are planned on the machine.

Europe is responsible for the largest portion of construction costs (45.6 %), the remainder is shared equally by the 6 other members (9.1 %t each). 90% of contributions will be delivered to the ITER Organization in the form of completed components, systems or buildings. In this way, the scientific and industrial fabric in each Member is prepared for the step after ITER - the conception and realization of the type of prototype fusion reactor that will demonstrate industrial-scale fusion electricity within this half of the century. For all Members, the potential benefits of participation are significant: by contributing a portion of the project's costs, Members benefit from 100 % of the scientific results.

Fabrication activities for the ITER machine and systems are underway all over the globe. Each Member has created a Domestic Agency to fulfil its procurement responsibilities to ITER. These agencies employ their own staff, have their own budget and contract directly with industry. Communication between the ITER Organization Central Team and the Domestic Agencies is facilitated by state-of the art collaborative CAD design tools, integrated project teams for specific components or projects, and video conferencing. The working language for the project is English.

Taken together, the ITER Members represent three continents, over 40 languages, half of the world's population and 85 percent of global gross domestic product. In the offices of the ITER Organization Central Team and the Domestic Agencies, in laboratories and in industry, literally thousands of people are working toward the success of ITER.

All the participants to the ITER Project are involved in the procurement of machine components and plant systems.

The distribution of in-kind fabrication tasks was based both on the interests and the technical and industrial capacities of each of the Members. The fabrication of key components is shared broadly - for example, the fabrication of the vacuum vessel sectors is shared between Europe (5 sectors) and Korea (4 sectors); the central solenoid is a collaboration between the United States and Japan; divertor manufacturing and testing is divided between Europe, Russia and Japan; India and the United States are sharing responsibility for ITER's cooling water systems; the blanket system will be produced by China, Europe, Korea, Russia and the United States; and finally, six ITER Members (all but India) are involved in the production of ITER magnets.

The ITER Organization has already signed nearly 100 Procurements Arrangements with the ITER Domestic Agencies established in each ITER Member. These agencies, in turn, contract out to industry for the fabrication of the component according to the very specific conditions laid out in the Procurement Arrangement documents. Since the beginning of the process, more than 2,800 contracts for design or fabrication have been awarded by the ITER Domestic Agencies. Today, in factories on three continents, the components and systems of the ITER plant are taking shape and are travelling along the ITER Itinerary.