Prices on shares in selected power companies and in companies with largetrading activity in electricity:April 16Company Closing price Change in % VolumeSTOCKHOLM (SEK)Arise Windpower 53,00 0,00 62 070Eolus Vind 42,80 1,66 35 751Holmen 203,50 -0,49 453Stora Enso 59,50 -2,46 16 146COPENHAGEN (DKK)Vestas Wind Systems 337,00 1,05 1 722 108HELSINKI (EUR)Fortum 18,67 -1,58 2 238 096Stora Enso 6,13 -0,65 15 900OSLO...