Prices on shares in selected power companies and in companies with largetrading activity in electricity:January 12COMPANY Latest close Change % VolumeSTOCKHOLM (SEK)Arise Windpower 44,70 -0,45 7 486Eolus Vind 42,20 -0,71 33 419Holmen 238,00 2,15 50Stora Enso 75,70 3,84 16 591COPENHAGEN (DKK)Vestas Wind Systems 181,00 0,56 858 722HELSINKI (EUR)Fortum 22,63 0,89 1 480 427Stora Enso 8,64 2,98 10 770OSLO (NOK)Arendals Fossekompani...