Prices on shares in selected power companies and in companies with largetrading activity in electricity:July 20Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 43,50 -0,23 3 086Eolus Vind 41,60 -0,48 2 289Holmen 192,00 0,00 0Stora Enso 59,05 1,29 8 201COPENHAGEN (DKK)Vestas Wind Systems 278,70 0,87 937 028HELSINKI (EUR)Fortum 18,15 1,45 2 971 839Stora Enso 6,32 2,76 10 219OSLO (NOK)Arendals...