Prices on shares in selected power companies and in companies with largetrading activity in electricity:August 31Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 45,80 -0,44 3 610Eolus Vind 39,00 0,00 11 569Holmen 206,00 0,73 568Stora Enso 60,65 -0,49 2 607COPENHAGEN (DKK)Vestas Wind Systems 219,20 -2,45 2 553 913HELSINKI (EUR)Fortum 18,17 -0,55 1 763 740Stora Enso 6,52 -2,40 2 514OSLO...