Prices on shares in selected power companies and in companies with largetrading activity in electricity:May 25Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 47,00 -3,49 65 509Eolus Vind 41,80 -0,48 15 794Holmen 185,00 -2,63 301Stora Enso 56,25 -3,85 18 517COPENHAGEN (DKK)Vestas Wind Systems 276,90 -5,04 1 336 387HELSINKI (EUR)Fortum 17,37 -2,96 2 623 117Stora Enso 5,72 -4,51 5 557OSLO...