Reactors at Oskarshamn
Oskarshamn 3
Current power
1,424
/ 1,450 MW
Uniper SE
Fortum Sweden AB
About Oskarshamn nuclear power plant
Oskarshamn nuclear power plant is located on the Simpevarp peninsula north of Oskarshamn in Kalmar County and is operated by OKG. Since Oskarshamn 1 and 2 were closed, Oskarshamn 3 is the only reactor in operation – a boiling water reactor from 1985 that, after a power uprate, is Sweden's most powerful single reactor at 1,450 MW.
Oskarshamn nuclear power plant, located in Oskarshamn, Kalmar län, operates one boiling water reactor (BWR). Oskarshamn 3 is Sweden's most powerful single reactor unit, with a capacity of 1,450 MW. This reactor plays a vital role in supplying electricity to southeastern Sweden.
Oskarshamn at a glance
- Location
- Oskarshamn, Kalmar län, Sweden
- Type
- Boiling Water Reactor (BWR)
- Operators
- Uniper SE, Fortum Sweden AB
Frequently asked questions about Oskarshamn
How many reactors are operating at Oskarshamn?
One: Oskarshamn 3. Oskarshamn 1 was shut down in 2017 and Oskarshamn 2 has been offline since 2013. Both are being decommissioned.
Who owns OKG?
OKG AB is owned by Uniper (54.5%) and Fortum (45.5%).
Is Oskarshamn 3 operating right now?
The reactor card at the top of the page shows the current output of Oskarshamn 3 directly from OKG. If the reactor is offline, the reason is shown from Nord Pool's UMM messages.
What is Clab?
Clab is Sweden's central interim storage facility for spent nuclear fuel, located next to the Oskarshamn plant. Used fuel from all Swedish reactors is stored there awaiting the final repository at Forsmark.
Other nuclear power plants
Ringhals nuclear power plant
Ringhals nuclear power plant, located in Varberg, Hallands län, operates two pressurized water reactors (PWR). Ringhals 3 and Ringhals 4 are among Sweden's most powerful reactors, with a combined capacity of 2,200 MW. These Westinghouse-designed PWRs provide reliable baseload power to southern Sweden.
Varberg, Hallands län, Sweden
Pressurized Water Reactors (PWR)
Vattenfall AB, Sydkraft Nuclear Power AB
Forsmark nuclear power plant
Forsmark nuclear power plant, situated in Östhammar, Uppsala län, operates three boiling water reactors (BWR). As Sweden's largest nuclear facility, Forsmark provides significant electricity generation capacity to central and northern Sweden. Forsmark 1 was commissioned in 1980, followed by Forsmark 2 (1981) and Forsmark 3 (1985), making the facility one of Sweden's most established nuclear power plants.
Östhammar, Uppsala län, Sweden
Boiling Water Reactors (BWR)
Vattenfall AB, Mellansvensk Kraftgrupp AB, Sydkraft Nuclear Power AB
Data sources and reliability
All power data presented on this page comes directly from official operators. Data related to maintenance and outages comes from the Nord Pool UMM platform (Urgent Market Messages), a European platform for sharing information about maintenance and outages on the power grid. This ensures accurate, up-to-date information about Sweden's nuclear power generation.
Data sources include Vattenfall AB, OKG (Oskarshamn Kraftgrupp), and the Nord Pool UMM Platform, providing comprehensive coverage of all Swedish nuclear reactors.