With the completion of negotiations at the end of 2005, a provisional agreement on how to share the ITER hardware procurements among the future ITER Members was reached. This envisages that 89 percent of the items will be provided "in kind", with the remainder being purchased through a joint fund under the control of the ITER Organization.
The precise details of how to share the work between the future ITER Members in some cases remains to be finalized, but the following has been agreed:
China: magnet conductor, correction coils, feeders and supports, blankets, remote handling transfer casks, gas injection system, electrical switchgear, some diagnostics.
India: vessel ferromagnetic inserts, cryostat, cryolines and cryodistribution, heat rejection system, ion cyclotron and startup electron cyclotron heating power supplies, diagnostic neutral beam, some diagnostics.
Japan: half the TF coils, most of the TF coil structure, part of the TF and all the CS conductors, part of the first wall, divertor outer target, blanket remote handling equipment, atmosphere detritiation, equatorial electron cyclotron launchers and power supplies, neutral beam components, some diagnostics.
Korea: some conductor strand, part of the vessel and vessel ports, blankets, assembly tooling, thermal shield, tritium storage, part of the power supplies, some diagnostics.
Russian Federation: PF coils 1 and 6 and some PF and TF coil conductor, some vacuum vessel ports, blankets and connectors, divertor dome and testing, electrical switchgear, some klystron tubes, some plasma diagnostics.
USA: wind CS coils, some TF conductor, some blankets, port limiters, part of the cooling system, part of the vacuum pumping and fuelling system, tokamak exhaust processing, part of the steady power supplies, RF transmission lines, some plasma diagnostics.
Jointly-funded items: magnet feeder sensors, diagnostic first wall, assembly operations and tooling, hot cell maintenance equipment, on-site assembly of the tritium, vacuum, heating, cooling and cryoplant systems, control and data acquisition, some plasma diagnostics.
Europe: the remainder, including sharing in most of the above procurements, plus the buildings.
The construction site decision and the inclusion of India in the negotiations means that the exact financial contribution of each future Member is now clear: Europe will contribute 45.45 percent, and China, Japan, Korea, Russian Federation and the USA will contribute 9.09 percent each (the sharing in costs of joint-funded items mirrors the overall sharing).
As each future Member was prepared to contribute 10 percent (50 percent in the case of Europe), the difference (the "reserve") may be called upon by the project if justified in future.