Prices on shares in selected power companies and in companies with largetrading activity in electricity:August 12Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 45,70 -0,44 1 789Eolus Vind 41,70 1,71 39 790Holmen 194,20 -0,92 64Stora Enso 62,05 -2,36 2 751COPENHAGEN (DKK)Vestas Wind Systems 299,20 3,93 2 352 060HELSINKI (EUR)Fortum 18,20 0,28 1 610 042Stora Enso 6,60 -1,49 3 346OSLO...