RITM-200N
Under construction Rosatom
Output
55MWe
RITM-200N is a light water-cooled reactor design from Rosatom rated at 55 MWe. Nuclear construction has begun.
The land-based version of the icebreaker reactor Rosatom has been building and operating at sea for years. That operating heritage is a real advantage over Western designs that exist only on paper, and commissioning is expected in 2028.
Regulatory position
| Tier | Under construction |
|---|---|
| Regulator | Rostechnadzor (Russia) |
| Application type | Construction licence |
| Docket / reference | Rostechnadzor construction licence, Yakutia |
| Application date | 2023-04 |
| Review phase | Under construction |
| Decision expected | 2028 |
Design
| Coolant | Light water |
|---|---|
| Reactor family | Pressurised water reactor (PWR) |
| Electrical output | 55MWe |
| Thermal output | not disclosed |
| Fuel | Uranium dioxide |
| Enrichment | LEU |
| First site | Ust-Kuyga, Yakutia |
| Offtakers | none announced |
Units announced with this design
8 units in the Global Nuclear Power Tracker carry the model name "RITM-200S" — 2construction, 1pre construction, 5announced. Announcement is not permission; compare this against the regulatory position above.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Cape Nagloynyn floating nuclear power plant 1 | Russia | construction | 106 |
| Cape Nagloynyn floating nuclear power plant 2 | Russia | construction | 106 |
| Cape Nagloynyn floating nuclear power plant 3 | Russia | pre construction | 106 |
| Cape Nagloynyn floating nuclear power plant 4 | Russia | announced | 106 |
| Primorsk nuclear power plant 1 | Russia | announced | 25 |
| Primorsk nuclear power plant 2 | Russia | announced | 25 |
| Primorsk nuclear power plant 3 | Russia | announced | 25 |
| Primorsk nuclear power plant 4 | Russia | announced | 25 |
Sources
- World Nuclear Association · retrieved 2026-09-06
- Announced units: Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release — CC BY 4.0