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Marviken–The world’s only oil-fired nuclear power plant

May 8, 2025, 9:30AMNuclear NewsJeremy Hampshire

Cutaway diagram of Marviken. (Image: Vattenfall)

In the late 1950s, the Swedish government decided to undertake a large-scale nuclear energy project. Situated about 75 miles southwest of Stockholm on the Baltic coast, Marviken was located on a peninsula, allowing for the cooling water intake and outlet to be located on either side of the peninsula. The coastal location also allowed the large reactor pressure vessel to be delivered by ship.

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Marviken–The world’s only oil-fired nuclear power plant

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