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Horizon Europe Euratom Research & Training Lump Sum

Horizon Euratom: SMR & Advanced Reactor Safety

Funds five €3M projects that test the safety of next-generation reactors and their fuel, from small modular designs to Gen-IV concepts.

OpenEuropean CommissionEUSwitzerlandUkraine

Europe wants a new generation of nuclear reactors — small modular reactors (SMRs) and more advanced Gen-IV designs — and this topic funds the safety research behind them, done independently rather than taken on the vendors' word. It covers both light-water SMRs and Gen-IV-based advanced modular reactors (AMRs), plus their fuel cycles.

A winning project researches, and where useful tests, the safe

Independent safety research for small modular reactors (both light-water SMRs and Gen-IV-based advanced modular reactors) and their fuel cycles — passive-safety assessment, pre-normative R&D, viability-phase testing, and experimental validation of coolants, fuel and severe-accident behaviour, plus the regulatory groundwork to assess these new designs consistently across the EU.

CycleiHow often this grant runs — e.g. annually, on a rolling basis, or a one-off call.One-off
Next deadlineiThe next date applications are due. Rolling means you can apply any time.15 Sept 2026
Decision timeiTypical time from the deadline to the funder's decision.22 weeks
Project durationiHow long the funded work is expected to run.
Award typeiThe form of funding — grant, equity, loan, tax credit, etc.Grant
Match fundingiThe share of project costs you must cover yourself. 0% = fully funded.30%
Funding pooliThe total budget available across all awards in this round.€15M

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Last verified: 25 Aug 2026Funder reference: HORIZON-EURATOM-2026-01-02Source: ec.europa.eu