Prices on shares in selected power companies and in companies with largetrading activity in electricity:February 28STOCKHOLM (SEK)Arise Windpower 43,10 -1,60 4 734Eolus Vind 52,75 1,44 16 341Holmen 231,00 1,32 1 633Stora Enso 73,85 -2,96 8 118COPENHAGEN (DKK)Vestas Wind Systems 186,10 3,62 2 075 331HELSINKI (EUR)Fortum 22,45 0,85 1 543 187Stora Enso 8,46 -1,91 2 852OSLO (NOK)Arendals Fossekompani 1700,00 0,00 0Hafslund...