Prices on shares in selected power companies and in companies with largetrading activity in electricity:July 27Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 44,90 3,22 17 687Eolus Vind 41,80 0,00 12 998Holmen 193,00 -0,21 70Stora Enso 63,50 0,79 10 806COPENHAGEN (DKK)Vestas Wind Systems 289,00 0,35 681 921HELSINKI (EUR)Fortum 17,54 -1,46 3 716 688Stora Enso 6,69 1,06 5 132OSLO (NOK)Arendals...