Prices on shares in selected power companies and in companies with largetrading activity in electricity:March 8STOCKHOLM (SEK)Arise Windpower 41,80 0,72 3 972Eolus Vind 52,00 0,00 17 593Holmen 232,70 -2,19 1 237Stora Enso 74,25 -2,17 15 039COPENHAGEN (DKK)Vestas Wind Systems 177,80 -1,22 744 333HELSINKI (EUR)Fortum 22,42 0,81 1 348 491Stora Enso 8,40 -0,24 3 584OSLO (NOK)Arendals Fossekompani 1785,00 0,00 0Hafslund 71,00...