Designs / dsn-vver-i
VVER-I
Gidropress integral modular water-cooled reactor with natural circulation, described by Rosatom in April 2023 at 250 MWth. A possible increase to 400 MWth is an uprating prospect, not another profile. Electrical output is not stated. Separate from VBER designs and conventional VVER-1000; no deployment is established.
Catalogue identity snapshot: 2023-04 (dated technical description; not confirmation of current development). Later technical descriptions, where recorded, are dated separately below. Source review does not establish current availability or a deployment.
- Class
- SMR
- Technology
- Integral pressurized water reactor (iPWR)
- Coolant
- light water
- Spectrum
- unknown
- Developer / vendor(s) as of 2023-04
- OKB Gidropress
- Module thermal
- 250 MWth (nameplate; basis unspecified)
- Inclusion basis
- smr_by_design_class
- Confidence
- medium
- Last verified
- 2026-10-13
Tracked deployment projects
- No projects tracked here.
Design sources
- Rosatom: As Natural as Water (company_primary, dated Apr 2023, accessed 2026-10-13)