Prices on shares in selected power companies and in companies with largetrading activity in electricity:May 6Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 44,00 -1,57 124 234Eolus Vind 41,00 -1,68 51 391Holmen 185,00 0,00 975Stora Enso 55,50 0,45 15 639COPENHAGEN (DKK)Vestas Wind Systems 305,60 -2,46 2 349 892HELSINKI (EUR)Fortum 18,38 -1,76 3 717 490Stora Enso 5,77 -1,37 10 547OSLO...