Sweden had a comprehensive set of protected civil defence bunkers throughout the Cold War. They also built a number of protected sites where rail-mounted transformers could be located in order to provide emergency power to the Swedish railway network.
At Söderhamn these two functions are located in adjacent bunkers about 500 metres east of the main railway station. The civil defence bunker was built in the 1950s and was known as a Ledning Central (Central Management) bunker. The railway transformer bunker was built around the same time and was connected to the railway network although these tracks have now been lifted.