Atomic Power Station 1 Obninsk
Atomic Power Station 1 Obninsk, nuclear power plant in Russia, operated one graphite-moderated light water reactor between 1954 and 2002 and is now shut down.
It is Russia's oldest nuclear plant, operating since 1954.
- Country
- Russia
- Units
- 1
- Technology
- LWGR
- Net capacity
- —
- First grid connection
- 1954
- Operator
- Ministry Of Medium Machine Building Of The USSR (Minsredmash)
- Owner
- Ministry Of Medium Machine Building Of The USSR (Minsredmash)
- Status
- Shut down
See also: alerts for this plant · every plant in Russia · Vendor: Soviet nuclear ministries (Minsredmash, Minatomenergoprom) · every LWGR reactor · how a LWGR works
Operating capacity
0 MWe
net electrical
Units
1
0 operating
First start-up
1954

Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Load factor |
|---|---|---|---|---|---|---|---|---|---|
| Atomic Power Station 1 Obninsk | Graphite-moderated light water (LWGR / RBMK) | AM-1 | Shut down | 5 | 30 | Jan 1951 | Jun 1954 | Apr 2002 | — |
Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026
Atomic Power Station 1 Obninsk, a 5 MWe LWGR (AM-1), started construction in 1951 and operated from 1954 to 2002.
Operator: Ministry Of Medium Machine Building Of The USSR (Minsredmash).