Prices on shares in selected power companies and in companies with largetrading activity in electricity:March 10STOCKHOLM (SEK)Arise Windpower 41,50 -0,72 7 919Eolus Vind 51,75 -1,43 3 268Holmen 233,00 -2,51 454Stora Enso 72,50 -1,83 4 900COPENHAGEN (DKK)Vestas Wind Systems 180,40 -1,42 885 646HELSINKI (EUR)Fortum 22,59 -0,35 1 207 417Stora Enso 8,20 -2,15 2 055OSLO (NOK)Arendals Fossekompani 1840,00 3,08 10Hafslund 69,50 0,00...