Prices on shares in selected power companies and in companies with largetrading activity in electricity:March 14STOCKHOLM (SEK)Arise Windpower 41,80 3,21 19 353Eolus Vind 53,00 4,43 45 095Holmen 224,20 -4,07 267Stora Enso 70,05 -2,51 17 770COPENHAGEN (DKK)Vestas Wind Systems 192,30 7,43 3 591 624HELSINKI (EUR)Fortum 21,57 -2,00 5 458 911Stora Enso 7,94 -2,64 3 696OSLO (NOK)Arendals Fossekompani 1720,00 0,00 0Hafslund 69,50...