Prices on shares in selected power companies and in companies with largetrading activity in electricity:May 31Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 51,25 -0,97 333 622Eolus Vind 41,50 -2,35 91 956Holmen 189,00 0,00 2 165Stora Enso 58,50 -0,43 3 005COPENHAGEN (DKK)Vestas Wind Systems 289,60 -0,41 416 649HELSINKI (EUR)Fortum 18,19 -1,25 827 455Stora Enso 6,10 0,00 6 392OSLO (NOK)Arendals...