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www.fortum.com › about-us › contact-usFortum Norway Askekroken 11 0277 Oslo, NORWAY Tel. +47 21 49 69 10 (customer service) Fortum Oslo Varme Askekroken 11 0277 Oslo, NORWAY Tel. +47 22 43 59 80 (customer service) Fortum Consumer Solutions AS Fortum Hedging AS Askekroken 11 0277 Oslo, NORWAY Tel. +47 21 49 69 10 (customer service) Fortum Hedging AS Askekroken 11 0277 Oslo, NORWAY