Prices on shares in selected power companies and in companies with largetrading activity in electricity:September 24COMPANY Latest close Change % VolumeSTOCKHOLM (SEK)Arise Windpower 42,40 0,95 49 450Eolus Vind 40,00 0,00 12 300Holmen 208,50 -0,71 240Stora Enso 63,80 2,33 5 926COPENHAGEN (DKK)Vestas Wind Systems 210,00 3,04 1 416 418HELSINKI (EUR)Fortum 19,34 0,94 1 184 155Stora Enso 7,00 3,25 1 950OSLO (NOK)Arendals...