Hafslund ASA (Hafslund) is one of the largest listed utility companies in the Nordic area. It is principally engaged in the generation and distribution of electricity and heat to households and companies in Southeastern Norway. It is a mid-sized generator of hydro electricity that generates annual median hydropower amounting to 2,900 GWh. As of December 31, 2010, Hafslund served approximately 951,000 customers in wholly or partly owned power sales companies; and provided district heating services to 3,000 apartment blocks, terraced houses, and commercial buildings. The company operates through six reportable business segments namely, Hydropower, Heat and Bioenergy, District Heating, Network, Power sales and Venture. Hafslund is headquartered in Oslo, Norway.