Prices on shares in selected power companies and in companies with largetrading activity in electricity:March 3STOCKHOLM (SEK)Arise Windpower 44,00 0,00 8 957Eolus Vind 52,00 0,97 4 477Holmen 232,60 0,69 610Stora Enso 75,80 3,20 12 764COPENHAGEN (DKK)Vestas Wind Systems 179,90 -0,66 904 090HELSINKI (EUR)Fortum 22,10 0,05 1 435 803Stora Enso 8,63 2,31 9 734OSLO (NOK)Arendals Fossekompani 1650,00 0,00 0Hafslund 70,00 1,45...