Prices on shares in selected power companies and in companies with largetrading activity in electricity:August 17Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 45,90 -0,86 2 803Eolus Vind 41,10 1,23 17 458Holmen 196,80 0,00 0Stora Enso 63,95 2,24 2 566COPENHAGEN (DKK)Vestas Wind Systems 314,50 2,85 2 031 859HELSINKI (EUR)Fortum 18,63 1,53 1 035 019Stora Enso 6,75 0,00 2 223OSLO...