Prices on shares in selected power companies and in companies with largetrading activity in electricity:August 27Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 45,00 3,45 20 286Eolus Vind 39,00 0,52 39 982Holmen 198,50 0,81 168Stora Enso 61,30 -1,13 1 967COPENHAGEN (DKK)Vestas Wind Systems 230,00 -1,79 1 516 106HELSINKI (EUR)Fortum 18,16 1,06 1 668 417Stora Enso 6,42 0,00 1 983OSLO...