Prices on shares in selected power companies and in companies with largetrading activity in electricity:February 11STOCKHOLM (SEK)Arise Windpower 46,00 3,37 23 710Eolus Vind 54,00 0,00 29 364Holmen 231,10 0,04 15Stora Enso 81,90 -0,61 6 855COPENHAGEN (DKK)Vestas Wind Systems 172,30 -1,99 1 182 424HELSINKI (EUR)Fortum 22,42 1,22 2 059 108Stora Enso 9,32 0,00 10 493OSLO (NOK)Arendals Fossekompani 1660,00 0,00 0Hafslund 70,25...