IAEA SMR longitudinal dataset, 2012–2024

This dataset provides a harmonised longitudinal record of small modular reactor (SMR) designs reported across seven editions of the International Atomic Energy Agency (IAEA) SMR design catalogues published between 2012 and 2024. The dataset tracks design entries across catalogue editions and records harmonised information on design name, country, reactor type, cooling type, capacity and reported development status. It is intended to support longitudinal analysis of SMR catalogue evolution and design-status reporting across successive IAEA editions.