Hafslund ASA is a Norwegian power, security and venture capital company. The company owns the power grid and district heating in Oslo as well as nine hydroelectric power plants. Hafslund is the largest owner of power grids and the largest end-user seller of electricity in Norway. Hafslund also owns 21% of Renewable Energy Corporation. Though being listed on the Oslo Stock Exchange, the City of Oslo retains a 54% ownership in Hafslund while Fortum owns 34%.
The Hafslund corporation was founded in 1898 and in 1899 it bought the Hafslund farm that had the rights to the waterfall Sarpsfossen
. In 1986 the group bought Actinor
with its subsidiary Nycomed
creating the new company Hafslund Nycomed
. In 1996 the company was demerged
with Nycomed focusing on pharmacy
and Hafslund on energy. In 2001 Hafslund entered the security sector by buying a number of alarm- and security companies. The same year the power company Oslo Energi
was bough, as was Tindra Energi
a year later, the two creating Hafslund Strøm
in 2003. Hafslund and Viken Energinett
, that operated the power grid in Oslo, were merged in 2002. In 2007 Hafslund also bought Viken Fjernvarme
that operated the district heating in Oslo. Both Oslo Energi, Viken Energi and Viken Fjernvarme were owned by the City of Oslo.