This report addresses 11 representative SMR concepts/designs originating from seven IAEA Member States, including Argentina, France, India, Italy, Japan, the Russian Federation, and the USA. The concepts have been selected to include:

— As many concepts as possible for which noticeable progress toward advanced design stages or deployment is observed;

— Concepts representing different reactor lines;

— Those concepts that could be deployed in the near term.

Presentation of certain SMR concepts in this report was also conditioned by the agreement of their developers to cooperate. In some cases, the designers considered the subject of this report too sensitive and withdrew from the cooperation.