PRESS RELEASE Halmstad, 20 May 2010 Interim Report for the period 1 January - 31 March 2010 Net sales for the period totalled TSEK 14,293 (438). Operating result before depreciation (EBITDA) totalled TSEK 4,146 (-4,872). Operating result (EBIT) totalled TSEK -2,426 (-5,200). Net result was TSEK -4,906 (-3,170), equivalent to a loss per share of SEK 0.19(0.22). Average income was SEK 761 (628) per MWh for electricity and SEK 341 (-) per MWh for electricity certificates. The period was characterised by low electricity production levels due to unusually poor winds and extreme electricity prices, a combination that led to a lower result than expected as previously announced. The company was admitted to the NASDAQ OMX Stockholm main list on 24 March 2010. A simultaneous new share issue which, along with the exercise of warrants, provided the Company with proceeds of MSEK 554 before issue expenses. Significant events after the close of the reporting period Arise Windpower signed a 10-year co-operation agreement with E.ON Elnät AB covering electrical connection of the wind farms planned by the Company within E.ON's area in southern Sweden. In connection thereto, the electricity grid station in Knäred with appurtenant transmission lines was transferred to E.ON Elnät AB. The agreement is expected to have a positive impact of MSEK 5.2 on this year's earnings, including a nonrecurring effect of MSEK 3.8, and a positive effect on cash flow of MSEK 25.8 during the second quarter of 2010. Several new land lease agreements have been signed, amongst other one with particular favourable wind conditions in Skåne. Halmstad, 20 May 2010 ARISE WINDPOWER AB (publ) The above 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 20 May 2010 at 16.00 pm. For additional information, please contact Peter Nygren, CEO, Tel. +46(0)706-300 680 Thomas Johansson, CFO, Tel +46 (0)768-211115 Bo Rydlinger, IR Tel. 0703-300 853 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 is quoted on NASDAQ OMX Stockholm. www.arisewindpower.se Arise Windpower AB (publ), Box 808, 301 18 Halmstad, tel. +46 35 20 20 900, org.nr. 556274-6726 E-mail: info@arisewindpower.se, www.arisewindpower.se