Press release Halmstad, May 19 2010 Arise Windpower signs 10-year co-operation agreement with E.ON Elnät Arise Windpower AB (Arise) and E.ON Elnät Sverige AB (E.ON) have signed a 10-year co-operation agreement covering the electrical connection of the wind farms planned by Arise within E.ON's area in southern Sweden. In connection thereto, Arise will hand over its grid station and applicable concession in Knäred to E.ON for a final account of SEK 87.8m. Peter Nygren, CEO of Arise: ”The expanded collaboration with E.ON means that the electrical connection of the planned new wind farms will occur more rapidly and more cost efficiently. We can therefore increase the profitability of parks located within E.ON's area. By handing over the grid station, we free up capital but retain our integrated grid organisation - and therefore the capacity to continue designing and constructing new electricity grids with a high level of cost and quality control. We are very pleased with the agreement and our collaboration with E.ON. ” Per-Olof Lindholm, CEO of E.ON Elnät Sverige AB: ”E.ON's goal is to simplify things as much as possible for wind power. As Sweden's leading grid company, we have both the experience and the resources to make cost efficient connections for promoters. The agreement with Arise should be viewed from this perspective.” The collaboration with E.ON will reduce electricity distribution costs and will have a long-term positive impact on Arise's cash flow. The agreement is expected to have a positive impact on earnings of SEK 5.2m this year (including a non-recurring effect of SEK 3.8m) and a positive impact on cash flow of SEK 25.8m during the second quarter of 2010. The agreement is contingent upon the approval of the Energy Markets Inspectorate. Halmstad, 19 May 2010 ARISE WINDPOWER AB (publ) This information is such that Arise Windpower AB (publ) is required to disclose under the Securities Market Act and/or the Financial Instruments Trading Act. The information was submitted for publication on May 19 2010 at 07.30 AM. For further information, please contact Peter Nygren, CEO of Arise Windpower AB + 46 706 300 680 Per-Olof Lindholm, CEO of E.ON Elnät Sverige AB + 46 705 259296 About Arise Windpower Arise Windpower is one of Sweden's leading land-based wind power companies. Arise Windpower's business concept is to sell electricity produced by its own land-based wind turbines in southern Sweden. The company's goal is to commission approximately 300 wind turbines by 2014 which will produce around 2 TWh of environmentally friendly electricity per year. Arise Windpower is listed on NASDAQ OMX Stockholm. Arise Windpower AB (publ), Box 808, SE-301 18 Halmstad, tel. +46 35 20 20 900, org.nr. 556274-6726 E-mail: info@arisewindpower.se, www.arisewindpower.se