Prices on shares in selected power companies and in companies with largetrading activity in electricity:December 13COMPANY Latest close Change % VolumeSTOCKHOLM (SEK)Arise Windpower 45,50 2,94 51 602Eolus Vind 43,20 2,86 24 611Holmen 209,00 0,00 32Stora Enso 66,80 0,38 6 621COPENHAGEN (DKK)Vestas Wind Systems 173,80 1,64 1 610 618HELSINKI (EUR)Fortum 21,69 0,88 1 318 259Stora Enso 7,39 1,37 8 076OSLO (NOK)Arendals...