Prices on shares in selected power companies and in companies with largetrading activity in electricity:May 26Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 47,20 0,43 33 095Eolus Vind 42,00 0,48 16 191Holmen 186,50 0,81 47Stora Enso 57,00 1,33 6 710COPENHAGEN (DKK)Vestas Wind Systems 291,20 5,16 1 384 478HELSINKI (EUR)Fortum 17,64 1,55 2 226 353Stora Enso 5,98 4,55 1 280OSLO...