Atlas Resource Partners, L.P. (NYSE: ARP) announced today that its 2011 annual report is now available to the general public. Atlas Resource Partners unitholders and other interested investors are able to obtain an electronic copy of the annual report on the partnership’s website in the Investor Relations section. In addition, hard copies of the annual reports may be ordered free of charge by calling (888) 400-7789, or by completing a request form in the Investor Relations section of the partnership’s website ( www.atlasresourcepartners.com) on the “Annual Report Request” page. Atlas Resource Partners, L.P. (NYSE: ARP) is an exploration & production master limited partnership which owns an interest in over 8,500 producing natural gas and oil wells, representing over 167 Bcfe of net proved reserves, primarily in Appalachia and the Niobrara region in Colorado. ARP is also the largest sponsor of natural gas and oil investment partnerships in the U.S. For more information, please visit our website at www.atlasresourcepartners.com, or contact Investor Relations at InvestorRelations@atlasenergy.com.