The plant is about 30 kilometers (19 mi) north of Oskarshamn, directly at the Kalmarsund at the Baltic Sea coast and with one active reactor, producing about 10% of the electricity needs of Sweden.

Clab, the temporary storage facility for spent nuclear fuel from all Swedish reactors, is also located at the site.

The incident related to a failure of diesel generators to automatically start up when required, after a blackout caused by a shortcut at the grindgear sections at the plant.

[1] On May 21, 2008, a welder tested positive for trace elements of explosives on a carrier bag and his hand at the entrance security check.

[6] On September 30, 2013, a portion of the plant (the third reactor) was closed when a group of jellyfish clogged the cooling water intake pipes.

With the closure of reactor 1 and 2, surplus capacity is available, and an agreement to supply so-called pink hydrogen to gas company Linde was made in January 2022.