goingcritical:brest-od-300Russia · SMR

BREST-OD-300

Site: Seversk, Tomsk Oblast

Status: Under construction — target criticality 2026 (confidence: low) target

Summary:

World's first lead-cooled fast reactor demonstration unit, core of the Proryv closed-fuel-cycle pilot complex

Rosatom-stated physical launch target of 2026 with grid connection planned for H1 2027; some reports indicate the launch may slip to 2029 pending additional R&D

Details

DesignBREST-OD-300 lead-cooled fast reactor (nitride fuel)
Capacity300 MWe

Milestone history

  1. Announced
  2. Construction start June 2021
  3. Fuel load
  4. First criticality target 2026
  5. Grid connection
  6. Commercial operation