Prices on shares in selected power companies and in companies with largetrading activity in electricity:August 23Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 43,90 -1,35 8 905Eolus Vind 41,20 0,49 2 050Holmen 197,10 0,15 932Stora Enso 61,20 0,00 977COPENHAGEN (DKK)Vestas Wind Systems 242,60 2,67 1 639 604HELSINKI (EUR)Fortum 18,20 -0,22 1 046 700Stora Enso 6,50 0,70 1 972OSLO (NOK)Arendals...