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About the programme

ITER (International Thermonuclear Experimental Reactor) is a large-scale experiment designed to prove the scientific and technical viability of fusion as a new energy source, and to take fusion energy to the threshold of industrial exploitation. ITER is expected to start operations in the South of France in 2025, and will be fully operational in 2035.

The European contribution to this international project is under the responsibility of the European joint undertaking Fusion for Energy (F4E) located in Barcelona (Spain). A bilateral collaboration between the EU and Japan runs in parallel to ITER and aims to accelerate the development of fusion power. Most funding is distributed through calls for tender.

Programme website

Funding opportunities

Calls for proposal

Open and upcoming calls for proposal under ITER.

Calls for tender

Open and upcoming calls for tender related to ITER.

Budget and performance

Includes performance highlights, key performance indicators, and the performance framework and assessment.

Programme performance webpage

Programme features

Programme duration


Lead Directorate-General
Predecessor programme


Management mode

Indirect management

MFF heading

Single Market, Innovation and Digital


Research and Innovation

Climate contribution

100% () (target)

Total budget 2021-2027

€ 5.61 billion () (current prices)

Relevant regulation

The legal basis is Council Decision (Euratom) 2021/281 of 22 February 2021 amending Decision 2007/198/Euratom establishing the European Joint Undertaking for ITER and the Development of Fusion Energy and conferring advantages upon it.




ENER-D4-SECRETARIATatec [dot] europa [dot] eu (ENER-D4-SECRETARIAT[at]ec[dot]europa[dot]eu)