Atomic Power Station 1 Obninsk nuclear power plant
Atomic Power Station 1 Obninsk nuclear power plant is a nuclear site in Russia with 1 unit on record. None is currently operating.
Units
| Unit | Status | Type | Model | Gross MW | Online |
|---|---|---|---|---|---|
| Atomic Power Station 1 Obninsk nuclear power plant | Retired | LWGR | AM-1 | 6 | 1954 |
Unit by unit
Each unit's rating, type and milestone dates as recorded by the Global Nuclear Power Tracker, with any correction we made to it. A dash or "not disclosed" means the source does not give the value.
Atomic Power Station 1 Obninsk nuclear power plant Retired
| Reactor type | Light water graphite reactor (LWGR) |
|---|---|
| Model | AM-1 |
| Size class | Very small |
| Gross capacity | 6MW |
| Net capacity | 5MW |
| Thermal output | 30MWt |
| Enrichment | 2–2.6% U-235 |
| NSSS vendor | not on record |
| Owner | Ministry Of Medium Machine Building Of The USSR (Minsredmash)100% |
| Operator | Ministry Of Medium Machine Building Of The USSR (Minsredmash) |
| Construction start | 1 Jan 1951 |
|---|---|
| First criticality | 6 May 1954 |
| Grid connection | 27 Jun 1954 |
| Commercial operation | 1 Dec 1954 |
| Permanent shutdown | 29 Apr 2002 |
Atomic Power Station 1 Obninsk nuclear power plant in context
The one unit with both construction and grid dates on record took 3.5 years from construction start to grid connection; the median across all reactors connected in the 1950s is 3.5 years.
No other nuclear site with an exact position in this dataset lies within 300 km.
Build time by unit
| Unit | Construction start | Grid connection | Years | Fleet median, same decade |
|---|---|---|---|---|
| Atomic Power Station 1 Obninsk nuclear power plant | 1951 | 1954 | 3.5 | 3.5 (1950s) |
How these are worked out: ranks use gross operating capacity; ages count from the start-up year on record, as on the age page; build times run from construction start to grid connection, as on the build-times page; ratings are the tracker's net and design net capacity, as on the uprates page. Distances are straight-line between exact positions, so a site with only an approximate position gets none. A unit missing a date or a rating is left out of the figure that needs it.
| Location | Obninsk, Kaluga, Russia |
|---|---|
| Coordinates | 55.0890, 36.5912 |
| Elevation | about 155 mabove sea level |
| Setting | About 670 km from the sea |
| Region | Eastern Europe |
| Units by status | Retired: 1 |
Elevation is read at the listed coordinates from a 30 m terrain model (SRTM 30 m). Two independent models differ by a median of 6 m across our plants and by up to about 40 m on steep or coastal ground, and a point on a shoreline can read as sea level. Distance to the water is measured to a generalised 1:10 million coastline, so a few kilometres or less is not resolved. This is context, not a design-basis or flood-risk figure.
| Owners | Ministry Of Medium Machine Building Of The USSR (Minsredmash) |
|---|---|
| Operators | Ministry Of Medium Machine Building Of The USSR (Minsredmash) |
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Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data