Prices on shares in selected power companies and in companies with largetrading activity in electricity:December 29COMPANY Latest close Change % VolumeSTOCKHOLM (SEK)Arise Windpower 43,50 0,00 17 817Eolus Vind 42,90 -0,23 8 784Holmen 222,50 0,86 312Stora Enso 71,00 0,85 23 485COPENHAGEN (DKK)Vestas Wind Systems 177,20 0,40 715 447HELSINKI (EUR)Fortum 22,52 0,54 707 580Stora Enso 7,88 1,55 1 390OSLO (NOK)Arendals Fossekompani 1725,00...