September 24, 2008

Atlas Energy Resources, LLC to Present at John S. Herold Pacesetters Energy Conference

Atlas Energy Resources, LLC (NYSE:ATN) ("Atlas Energy") announces that Atlas Energy will be presenting at the John S. Herold Pacesetters Energy Conference today Wednesday, September 24th in Greenwich, CT. Rich Weber, President and Chief Operating Officer will be presenting on a panel for Atlas Energy at 3:00 p.m. Eastern Time.

Atlas Energy's updated company presentation will be available on the company's website at on the Presentations page of the Investor Relations section of the site.

Atlas Energy Resources, LLC develops and produces domestic natural gas and to a lesser extent, oil. Atlas Energy is one of the largest independent energy producers in the Appalachian Basin and northern Michigan. Atlas Energy sponsors and manages tax-advantaged investment partnerships, in which it co-invests, to finance the exploration and development of the Company's acreage in the Appalachian Basin. Atlas Energy is active principally in Pennsylvania, Michigan and Tennessee. For more information, visit Atlas Energy's website at or contact Investor Relations at [email protected]