Generation III+ PWR with passive safety systems

Experimental fusion reactor

Generation II boiling water reactor (BWR)

SMRs require larger containment structures than traditional reactors

SMRs produce more electricity than large reactors due to higher thermal efficiency

SMRs are designed for large serial production and modular deployment, while large reactors are custom-built on site

SMRs use only fusion reactions, while large reactors use fission

Presence of passive emergency cooling systems

Use of heavy water as a moderator

Absence of containment building