Prices on shares in selected power companies and in companies with largetrading activity in electricity:December 9COMPANY Latest close Change % VolumeSTOCKHOLM (SEK)Arise Windpower 43,00 3,87 56 939Eolus Vind 42,30 -1,63 23 001Holmen 210,30 0,00 0Stora Enso 67,20 -0,44 6 763COPENHAGEN (DKK)Vestas Wind Systems 159,80 0,00 869 857HELSINKI (EUR)Fortum 21,42 0,09 2 117 057Stora Enso 7,38 -0,27 7 071OSLO (NOK)Arendals Fossekompani...