Compare two reactors
Pick two units from any country and see their numbers side by side. Net capacities and operating data from IAEA PRIS 2025.
Fixed comparisons
PWR vs BWR
Pressurized water against boiling water: pressure, loops, control rods and turbine, with the real fleet of each type computed from the atlas.
PWR vs CANDU
Heavy water and pressure tubes against a pressure vessel and enriched uranium: fuel, moderator, refuelling and the real fleet of each type.
CANDU vs VVER
The Canadian PHWR against the VVER, the Russian PWR: fuel, core geometry, steam generators and the real fleet of each design.
EPR vs AP1000
The EPR and the AP1000, the West's two large Generation III+ PWRs: power, loops, containment, safety systems and where they were built.
AGR vs PWR
Britain's CO₂-cooled reactor against the world standard: temperature, efficiency, fuel, refuelling and the real fleet.
RBMK vs PWR
Graphite and pressure tubes with boiling water against a vessel and pressurized water: void coefficient, containment and how many RBMKs still operate.