Prices on shares in selected power companies and in companies with largetrading activity in electricity:September 3Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 44,70 -2,61 5 241Eolus Vind 40,40 1,25 7 344Holmen 218,00 4,81 965Stora Enso 62,20 -1,19 4 486COPENHAGEN (DKK)Vestas Wind Systems 221,70 0,05 2 103 119HELSINKI (EUR)Fortum 18,41 -0,22 1 584 677Stora Enso 6,71 -1,11 5 048OSLO...