First floating SMR online
2020-05Rosatom
Akademik Lomonosov began commercial operation in Pevek with two 35 MWe KLT-40S reactors.
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S
Small Modular Reactors
An investor-friendly lens on a field the official trackers keep dry.
Live Updated 2026-01
Distance to goal
The single most intuitive view — current position against the end goal, on a log scale.
Operating SMR units
Metric detail 1
now
4
Russia + China
goal
~0.0 orders of magnitude to go
Headline indicators
Milestone timeline
Clear-cut events: crossed or not crossed.
4 achieved 1 in progress 1 locked
First SMR design certified by US NRC
2023-01NuScale Power
NuScale's design became the only SMR certified by the US regulator.
HTR-PM pebble-bed SMR commercial
2023-12China (Huaneng / Tsinghua)
World's first commercial pebble-bed high-temperature gas-cooled SMR.
First Western SMR construction approved
2025-05GE Vernova Hitachi / OPG
BWRX-300 construction approved at OPG's Darlington site in Ontario, Canada.
First commercial land-based SMR (Linglong One)
~ 2026CNNC
125 MWe ACP100 on Hainan Island, targeting commercial operation in 2026.
First Western SMR online (target)
~ 2030GE Vernova Hitachi / OPG
Darlington Unit 1 targeted to complete by the end of 2030.
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Every figure links to a primary source. We publish no invented scores. Tracker numbers are neutral; analysis is labelled separately.