Track small modular reactor projects
TinySet builds a dataset of SMR projects worldwide, with status. TinyResearch says which are closest to switching on.
TinySet
Dataset · 72 rowsSmall modular reactor projects worldwide, with developer, country, capacity and status
| Project name | Developer | Country | Capacity (MWe) |
|---|---|---|---|
| Atucha ACR-300 SMR proposal | Meitner Energy / INVAP | Argentina | 300 |
| Belledune Green Energy Hub ARC-100 | Belledune Port Authority / ARC Clean Technology Canada | Canada | 200 |
| Darlington New Nuclear Project, BWRX-300 Unit 1 | Ontario Power Generation (OPG) | Canada | 300 |
| Moltex Stable Salt Reactor at Point Lepreau | Moltex Energy / NB Power | Canada | 100 |
| Point Lepreau ARC-100 | NB Power / ARC Clean Technology Canada | Canada | 100 |
| SaskPower SMR project | SaskPower | Canada | 300 |
| Saskatchewan Research Council eVinci microreactor | Saskatchewan Research Council / Westinghouse | Canada | 5 |
| HTR-PM Shidaowan demonstration | China Huaneng / Tsinghua University / CNNC | China | 210 |
TinyResearch
ReportWill any small modular reactors actually switch on this decade? Which ones are closest and why?
Yes, a small number of SMRs will almost certainly come online before 2031, and the first credible candidates are already under physical construction. The realistic count for grid-connected commercial SMRs before 2031 is two to three units globally, with TerraPower's Natrium a possible addition in 2031. The front-runners are China's Linglong One (ACP100, now in commissioning and expected in 2027), Canada's Darlington BWRX-300 (targeting end-2030 grid connection, with a basemat already installed), and TerraPower's Natrium at Kemmerer (targeting ~2031, construction underway). Russia's land-based RITM-200N at Ust-Kuyga carries a 2028 official target but faces significant remote-logistics risk. Every other project discussed in this briefing—TVA Clinch River, Kairos Hermes 2, Rolls-Royce SMR at Wylfa, Argentina's CAREM-25—will not produce commercial power this decade, though some represent genuine near-term milestones. The fundamental barriers—first-of-a-kind costs, HALEU fuel supply constraints, supply chain immaturity, and the need for sequential licensing steps—mean that the 2020s will end with proof-of-concept rather than scale, but proof-of-concept is itself a decisive strategic inflection point.
