Atlas Energy, L.P. (NYSE: ATLS) announces today that it will release its results for the fourth quarter and full year 2011 on Monday, February 27, 2012 after market hours, and invites investors and other interested parties to listen to the live webcast of its quarterly conference call on Tuesday, February 28, 2012, at 9:00am ET.

This call is being webcast live and can be accessed by investors and other interested parties from the Investor Relations section of Atlas Energy’s website at www.atlasenergy.com. For those unavailable to listen to the live broadcast, the replay of the webcast will be available following the live call on the Atlas Energy website and telephonically beginning at 12:00p.m. ET on February 28, 2011 by dialing 888-286-8010, passcode: 94367344.

Atlas Energy, L.P. (NYSE: ATLS) is a master limited partnership which owns an interest in over 8,500 producing natural gas and oil wells, representing over 185 Bcfe of net proved developed reserves. Additionally, Atlas Energy owns and operates the general partner of Atlas Pipeline Partners, L.P. (NYSE: APL), through which it owns a 2% general partner interest, all the incentive distribution rights and approximately 5.75 million common limited partner units of APL. For more information, please visit our website at www.atlasenergy.com, or contact Investor Relations at InvestorRelations@atlasenergy.com.

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