EU DEMO is Europe's planned post-ITER demonstration tokamak power plant, intended to deliver 300-500 MW of net electricity with a closed tritium fuel cycle. It is in the conceptual design phase under EUROfusion; no site or construction date has been set and operation is not expected before the 2050s.
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Current state
| Status | Concept |
| Country | European Union |
| Developer | EUROfusion consortium (EU Euratom programme) |
| Developer type | Public |
| Concept | Tokamak |
| Fuel | D-T |
| Purpose | Demonstration |
| Target output (MWe) | 300 |
| Public funding | Euratom research programme via EUROfusion |
Notes
country 'EU' is not an ISO-3166 code; used because DEMO is a multinational EU programme with no site. target output holds the low end of the 300-500 MWe net range. No 2025-26 milestone found; schedule information is old.
Timeline
- 2017-07 — A draft EUROfusion roadmap pushed DEMO start to 'early in the second half of the century', with a design document citing post-2054. (source)
- 2020-12-14 — An independent DEMO Gate Review Panel endorsed moving DEMO into its conceptual design phase. (source)
The timeline is append-only: corrections are added as new entries. Stated targets appear in the current-state table, never as milestones.
Related projects
- ARC (Commonwealth Fusion Systems) Design · United States
- BEST (Burning Plasma Experimental Superconducting Tokamak) Under construction · China
- CFEDR / China Fusion Energy Co. demo reactor (successor to CFETR) Design · China
- EAST (Experimental Advanced Superconducting Tokamak) Operating · China
- FAST (Fusion by Advanced Superconducting Tokamak) Design · Japan
- HH170 (Energy Singularity) Design · China
- HH70 (Energy Singularity) Operating · China
- ITER Under construction · France
See all 51 projects in the Fusion Energy Companies & Projects Tracker →
Sources
- Demonstration Power Plant DEMO — EUROfusion (primary), checked 2026-10-11
- Expert panel approves next DEMO design phase — EUROfusion (primary), checked 2026-10-11
- Nuclear fusion in Europe delayed past 2050 — The Chemical Engineer, checked 2026-10-11