Fortum head office

Fortum's old head office is a high-rise office building located in the Keilaniemi district of Espoo, just outside Helsinki, the capital of Finland. With a height of 84 metres, it is currently the fourth tallest habitable building in Finland.

The building was constructed between 1973 and 1978, while Uolevi Raade was the manager of Neste, which merged and later demerged with Imatran Voima, the predecessor of Fortum. This is why the building is sometimes referred to as Raaden hammas. When Imatran Voima merged with Neste, the merged company Fortum took the building as its HQ. However, in the demerger six years later, the building was not returned to Neste Oil, but was retained by Fortum, the electricity producer. Consequently, Neste Oil had to construct a new HQ building nearby.