Item 8.01. Other Events.

On December 4, 2012, the Railroad Commission of Texas ("RRC") issued a final order in the rate case for the Mid-Tex Division (the "Division") of Atmos Energy Corporation (the "Company"), which was originally filed with 441 cities in the Division (all cities except the City of Dallas) on January 31, 2012 and subsequently appealed to the RRC on May 31, 2012. The RRC approved an increase in margin of about $29.6 million and a net decrease in depreciation rates of approximately $13.0 million, generating a net increase in the Division's annual operating income of approximately $42.6 million. Below is a summary of additional major provisions of the order that will go into effect with bills rendered on and after January 1, 2013 by the Division, which serves about 1.3 million residential customers:

• Authorized return on equity of 10.5 percent

• Authorized capital structure of 48.3 percent debt /51.7 percent equity

• Authorized rate base value of $1.513 billion

• Monthly residential customer charge increased to $17.70 from $7.50

This description of the RRC's final order is qualified in its entirety by reference to the order, a copy of which is posted on the Company's website at www.atmosenergy.com. A copy of the order may be found under the "Investors" tab of the website by clicking on the "Publications and Filings" link and then the "Other Investor Information" link.

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