Prices on shares in selected power companies and in companies with largetrading activity in electricity:August 6Company Closing price Change in % VolumeSTOCKHOLM (SEK)Holmen 220,50 - 5/8Stora Enso 56,25 0,00 5 181COPENHAGEN (DKK)Vestas Wind Systems 368,50 3,80 978 516HELSINKI (EUR)Fortum 16,60 0,48 1 143 203Stora Enso 5,44 -0,55 4 866OSLO (NOK)Arendals Fossekompani 1710,00 - 3/8Hafslund 70,25 0,00 1 500Norsk Hydro 37,07...