Prices on shares in selected power companies and in companies with largetrading activity in electricity:December 16COMPANY Latest close Change % VolumeSTOCKHOLM (SEK)Arise Windpower 43,20 -2,92 6 100Eolus Vind 42,00 -0,94 104 344Holmen 217,70 -0,14 1 014Stora Enso 64,50 -0,39 9 396COPENHAGEN (DKK)Vestas Wind Systems 182,00 0,39 1 181 507HELSINKI (EUR)Fortum 21,87 1,72 2 009 518Stora Enso 7,14 0,14 5 444OSLO...