Small Modular Reactors
Tracked metric

Operating SMR units

Grid-connected commercial small modular reactor units worldwide. Only Russia and China operate SMRs today; the West's first units target ~2030.

4Reached · 2023
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  1. 4 reactors 2023 Database · 2026
  2. 2 reactors 2020 Database · 2025

More on this

Analysis as of Mar 5, 2026

The SMR investment case — and its 2030 cliff

Big tech power deals and listed names (NuScale, Oklo) have lifted SMR sentiment, but Western first-of-a-kind units don't reach the grid until ~2030. We weigh the gap between order books and operating reactors. (Our opinion, not investment advice.)

Our read — labelled opinion, not investment advice.
Explainer Feb 23, 2026

Who actually has SMRs running?

Headlines feature Western startups, but the only commercial SMRs operating today are Russia's floating Akademik Lomonosov (2020) and China's HTR-PM (2023). China's Linglong One aims to be the first land-based commercial unit in 2026.