Exhibit 99.1

News Release

Analysts and Media Contact:

Susan Giles (972) 855-3729

Atmos Energy Corporation Reports Earnings for Fiscal 2012;

Initiates Fiscal 2013 Guidance

DALLAS (November 7, 2012)—Atmos Energy Corporation (NYSE: ATO) today reported consolidated results for its 2012 fiscal year and fourth quarter ended September 30, 2012.

• Fiscal 2012 consolidated results, excluding net unrealized margins were $221.7 million, or $2.42 per diluted share, compared with consolidated results of $214.2 million, or $2.34 per diluted share in the prior year.

• After including noncash, unrealized net losses of $5.0 million, or ($0.05) per diluted share, fiscal 2012 net income was $216.7 million, or $2.37 per diluted share. Net income was $207.6 million, or $2.27 per diluted share in the prior year, after including unrealized net losses of $6.6 million or ($0.07) per diluted share.

• Fiscal 2012 net income includes a net gain on the sale of the Missouri, Illinois and Iowa assets of $6.3 million, or $0.07 per diluted share. Additionally, included in current-year net income is the net positive impact of several one-time items totaling $4.0 million, or $0.04 per diluted share. Fiscal 2011 net income included the positive impact of several one-time items totaling $3.2 million, or $0.03 per diluted share.

• Excluding the gain on sale, net income from discontinued operations was $18.2 million, or $0.20 per diluted share in the current year, compared with $18.0 million, or $0.20 per diluted share in the prior year.

• Atmos Energy expects fiscal 2013 earnings to be in the range of $2.40 to $2.50 per diluted share, excluding unrealized margins and the gain on the sale of the company’s Georgia operations.

For the quarter ended September 30, 2012, consolidated net income was $8.0 million, or $0.09 per diluted share, compared with net income of $2.0 million, or $0.02 per diluted share for the same quarter last year. Results from nonregulated operations include noncash, unrealized net losses of $12.4 million, or ($0.14) per diluted share for the three months ended September 30, 2012, compared with net losses of $4.9 million, or ($0.05) per diluted share for the prior-year quarter. Current-quarter net income includes the aforementioned gain on the sale of Missouri, Illinois and Iowa assets totaling $6.3 million, or $0.07 per diluted share and the net positive impact of several one-time items totaling $4.0 million or $0.04 per diluted share. Excluding the gain on sale, net income from discontinued operations for the quarter ended September 30, 2012 was $1.9 million, or $0.02 per diluted share, compared with $1.7 million, or $0.02 per diluted share in the prior-year quarter.

“Fiscal 2012 was an exceptional year. We reported our tenth consecutive year of increasing earnings per share, and deployed significant capital investment in the first year of our five-year capital program to fortify and improve the safety of our system,” said Kim Cocklin, president and chief executive officer of Atmos Energy Corporation.

“Predictable and stable earnings from our regulated operations remain the primary source of our annual earnings platform, delivering 98 percent of consolidated net income, despite a benign heating season. And, our nonregulated business executed on their strategy and generated improved results in the second half of fiscal 2012, in spite of the anemic natural gas market,” Cocklin concluded.

Results for the Year Ended September 30, 2012

Natural gas distribution gross profit, excluding discontinued operations, increased $4.8 million to $1,022.7 million for the year ended September 30, 2012, compared with $1,017.9 million in the prior-year period. This increase is due largely to a $17.7 million net increase in rate adjustments. Partially offsetting this increase was a $1.6 million decrease associated with an eight percent decrease in consolidated distribution throughput, primarily from lower consumption and warmer weather, coupled with an $11.1 million decrease in revenue-related taxes from lower revenues on which the tax is calculated.

Regulated transmission and storage gross profit increased $28.0 million to $247.4 million for the year ended September 30, 2012, compared with $219.4 million in the prior fiscal year. This increase is primarily a result of rate design changes approved in the Atmos Pipeline – Texas rate case that became effective in May 2011, coupled with Gas Reliability Infrastructure Program (GRIP) filings that became effective in July 2011 and April 2012.

Nonregulated gross profit decreased $9.9 million to $55.1 million for the year ended September 30, 2012, compared with $65.0 million for the prior-year period. The decrease reflects a $15.1 million decrease in the realized margins of Atmos Energy Holdings, Inc. (AEH) from gas delivery and other services, primarily due to a nine percent decrease in consolidated sales volumes as a result of warmer weather combined with a $0.02/Mcf decrease in per-unit margins. Partially offsetting this decrease was a $2.9 million increase in realized asset optimization margins due to realizing higher gains on the settlement of financial instruments used to hedge our natural gas purchases during fiscal 2012. Additionally, unrealized margins increased $2.4 million.

Consolidated operation and maintenance expense, excluding discontinued operations, for the year ended September 30, 2012, was $453.6 million, compared with $443.0 million for the prior year. The $10.6 million increase resulted primarily from higher legal costs of $7.4 million and a $3.5 million increase in employee-related costs.

Depreciation and amortization increased $13.7 million to $237.5 million during the year ended September 30, 2012, compared with $223.8 million for the prior year primarily due to incremental capital investments made in fiscal 2011 and early fiscal 2012 that resulted in increased depreciation expense in the current year.

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Results for fiscal 2012 and 2011 include noncash charges to impair assets. Fiscal 2012 results include a $5.3 million charge to impair the remaining investment in the Kentucky natural gas gathering assets. Fiscal 2011 results include an $11.0 million charge to partially impair these assets and a $19.3 million charge to impair the company’s investment in the Ft. Necessity storage project.

Miscellaneous expense was $14.6 million for the year ended September 30, 2012, compared to miscellaneous income of $21.2 million for the prior year. The $35.8 million year-over-year change resulted primarily from a $10.0 million one-time cash donation made to a donor-advised fund in the current year, coupled with the absence in the current year of a $27.8 million pre-tax cash gain recognized last year as a result of unwinding two Treasury lock agreements in conjunction with the cancellation of a planned debt offering.

Interest charges for the year ended September 30, 2012 were $141.2 million, compared with $150.8 million in the prior year. The $9.6 million year-over-year decrease resulted primarily from maturing long-term debt being replaced at lower interest rates in fiscal 2011, coupled with reducing commitment fees in fiscal 2011, as well as, the early redemption of the company’s 5.125% $250 million senior notes due January 2013 in the fourth quarter of fiscal 2012.

Income tax expense decreased $8.6 million to $98.2 million for the year ended September 30, 2012, compared with $106.8 million for the prior year. During the current quarter, the company revised and reduced the tax rate at which deferred taxes are expected to be settled in future periods as a result of the sale of the Missouri, Illinois and Iowa assets. This revision resulted in the recognition of a tax benefit of $13.6 million in the current year. During fiscal 2011, the company recorded a $5.0 million tax benefit due to the administrative settlement of various income tax positions.

The debt capitalization ratio at September 30, 2012 and 2011 was 51.7 percent. At September 30, 2012, there was $570.9 million of short-term debt outstanding, compared with $206.4 million at September 30, 2011. The increase in short-term debt was due to the early redemption of the company’s 5.125% $250 million senior notes in the fourth quarter of fiscal 2012.

For the year ended September 30, 2012, the company generated operating cash flow of $586.9 million, a $4.1 million increase compared with the year ended September 30, 2011. The increase reflects changes in working capital, offset in part by a $56.7 million increase in contributions to the company’s pension and postretirement plans.

Capital expenditures increased to $732.9 million for the year ended September 30, 2012, compared with $623.0 million in the prior year. The $109.9 million increase primarily reflects spending for the steel service line replacement program in the Mid-Tex Division and other infrastructure replacement projects in the Mid-Tex, West Texas and Kentucky Divisions, the development of new customer billing and information systems for the natural gas distribution segment and increased capital spending in the regulated transmission and storage segment.

Results for the 2012 Fourth Quarter Ended September 30, 2012

Natural gas distribution gross profit, excluding discontinued operations, increased $2.5 million to $171.8 million for the fiscal 2012 fourth quarter, compared with $169.3 million in the prior-year quarter. This increase reflects a net $2.9 million increase in rates and a $1.2 million increase associated with a one percent increase in throughput. These increases were partially offset by a $2.2 million decrease in revenue-related taxes, primarily due to lower revenue on which the tax is calculated.

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Regulated transmission and storage gross profit increased $3.7 million to $65.5 million for the quarter ended September 30, 2012, compared with $61.8 million for the same quarter last year. This increase is primarily the result of a $3.7 million increase related to GRIP filings that became effective in July 2011 and April 2012.

Nonregulated gross profit increased $6.1 million to $12.5 million for the fourth quarter of fiscal 2012, compared with $6.4 million for the prior-year quarter. The increase primarily reflects a $19.6 million quarter-over-quarter increase in realized asset optimization margins due to realized gains earned from the execution of AEH’s trading strategy implemented earlier in the fiscal year to inject gas into storage and roll positions to the third and fourth quarters of fiscal 2012. This increase was partially offset by a $1.2 million decrease in realized margins from gas delivery and other services, primarily due to a 14 percent decrease in consolidated sales volumes as a result of lower industrial and power generation demand. Finally, unrealized margins decreased $12.2 million quarter over quarter.

Consolidated operation and maintenance expense, excluding discontinued operations for the three months ended September 30, 2012, was $123.6 million, compared with $106.1 million for the prior-year quarter. The $17.5 million quarter-over-quarter increase resulted primarily from an increase in employee-related costs of $8.0 million and a $6.8 million increase in legal costs.

Results for the quarter ended September 30, 2012, include the one-time items previously discussed, which resulted in a total net of tax gain of $10.3 million.

Outlook

The leadership of Atmos Energy remains focused on enhancing shareholder value by delivering consistent earnings growth. Atmos Energy expects fiscal 2013 earnings to be in the range of $2.40 to $2.50 per diluted share, excluding unrealized margins and the gain on the sale of the company’s Georgia operations. Net income from regulated operations is expected to be in the range of $211 million to $219 million, while net income from nonregulated operations is expected to be in the range of $9 million to $11 million. Capital expenditures for fiscal 2013 are expected to range between $770 million to $790 million.

Conference Call to be Webcast November 8, 2012

Atmos Energy will host a conference call with financial analysts to discuss the fiscal 2012 financial results and outline the assumptions supporting the fiscal 2013 guidance on Thursday, November 8, 2012, at 10 a.m. Eastern Time. The telephone number is 877-485-3107. The conference call will be webcast live on the Atmos Energy website at www.atmosenergy.com. A playback of the call will be available on the website later that day. Kim Cocklin, president and chief executive officer and Bret Eckert, senior vice president and chief financial officer will participate in the conference call.

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Highlights and Recent Developments

Atmos Energy Completes Early Redemption of Senior Notes

On August 28, 2012, Atmos Energy redeemed all of its issued and outstanding 5.125% Senior Notes due January 2013. The redemption was initially financed with the proceeds from the issuance of commercial paper.

Atmos Energy Enters into Term Loan Credit Facility

On September 27, 2012, the company entered into a $260 million credit facility to repay the commercial paper issued for the early redemption of its $250 million senior notes. The credit facility expires on February 1, 2013.

This news release should be read in conjunction with the attached unaudited financial information.

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Forward-Looking Statements

The matters discussed in this news release may contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements other than statements of historical fact included in this news release are forward-looking statements made in good faith by the company and are intended to qualify for the safe harbor from liability established by the Private Securities Litigation Reform Act of 1995. When used in this news release or in any of the company’s other documents or oral presentations, the words “anticipate,” “believe,” “estimate,” “expect,” “forecast,” “goal,” “intend,” “objective,” “plan,” “projection,” “seek,” “strategy” or similar words are intended to identify forward-looking statements. Such forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those discussed in this news release, including the risks and uncertainties relating to regulatory trends and decisions, the company’s ability to continue to access the capital markets and the other factors discussed in the company’s reports filed with the Securities and Exchange Commission. These factors include the risks and uncertainties discussed in the company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2011 and in the company’s Quarterly Report on Form 10-Q for the three and nine months ended June 30, 2012. Although the company believes these forward-looking statements to be reasonable, there can be no assurance that they will approximate actual experience or that the expectations derived from them will be realized. The company undertakes no obligation to update or revise forward-looking statements, whether as a result of new information, future events or otherwise.

About Atmos Energy

Atmos Energy Corporation, headquartered in Dallas, is one of the country’s largest natural-gas-only distributors, serving about three million natural gas distribution customers in over 1,400 communities in nine states from the Blue Ridge Mountains in the East to the Rocky Mountains in the West. Atmos Energy also provides natural gas marketing and procurement services to industrial, commercial and municipal customers primarily in the Midwest and Southeast and manages company-owned natural gas pipeline and storage assets, including one of the largest intrastate natural gas pipeline systems in Texas. For more information, visit www.atmosenergy.com.

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Atmos Energy Corporation

Financial Highlights (Unaudited)

Statements of Income	Year Ended September 30						Percentage
(000s except per share)	2012			2011			Change
Gross Profit:
Natural gas distribution segment	$	1,022,743		$	1,017,943			1	%
Regulated transmission and storage segment		247,351			219,373			13	%
Nonregulated segment		55,124			65,000			(15	)%
Intersegment eliminations		(1,479	)		(1,496	)		1	%
Gross profit		1,323,739			1,300,820			2	%
Operation and maintenance expense		453,613			442,965			2	%
Depreciation and amortization		237,525			223,832			6	%
Taxes, other than income		181,073			177,767			2	%
Asset impairments		5,288			30,270			(83	)%
Total operating expenses		877,499			874,834			—	%
Operating income		446,240			425,986			5	%
Miscellaneous income (expense)		(14,644	)		21,184			(169	)%
Interest charges		141,174			150,763			(6	)%
Income from continuing operations before income taxes		290,422			296,407			(2	)%
Income tax expense		98,226			106,819			(8	)%
Income from continuing operations		192,196			189,588			1	%
Income from discontinued operations, net of tax		18,172			18,013			1	%
Gain on sale of discontinued operations, net of tax		6,349			—			100	%
Net income	$	216,717		$	207,601			4	%
Basic earnings per share
Income per share from continuing operations	$	2.12		$	2.08
Income per share from discontinued operations		0.27			0.20
Net income per share – basic	$	2.39		$	2.28
Diluted earnings per share
Income per share from continuing operations	$	2.10		$	2.07
Income per share from discontinued operations		0.27			0.20
Net income per share – diluted	$	2.37		$	2.27
Cash dividends per share	$	1.38		$	1.36
Weighted average shares outstanding:
Basic		90,150			90,201
Diluted		91,172			90,652
	Year Ended September 30						Percentage
Summary Net Income (Loss) by Segment (000s)	2012			2011			Change
Natural gas distribution – continuing operations	$	123,848		$	144,705			(14	)%
Natural gas distribution – discontinued operations		24,521			18,013			36	%
Regulated transmission and storage		63,059			52,415			20	%
Nonregulated		10,276			(940	)		1,193	%
Unrealized margins, net of tax		(4,987	)		(6,592	)		24	%
Consolidated net income	$	216,717		$	207,601			4	%

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Atmos Energy Corporation

Financial Highlights, continued (Unaudited)

Statements of Income	Three Months Ended September 30						Percentage
(000s except per share)	2012			2011			Change
Gross Profit:
Natural gas distribution segment	$	171,761		$	169,348			1	%
Regulated transmission and storage segment		65,482			61,820			6	%
Nonregulated segment		12,527			6,359			97	%
Intersegment eliminations		(381	)		(367	)		(4	)%
Gross profit		249,389			237,160			5	%
Operation and maintenance expense		123,624			106,145			16	%
Depreciation and amortization		60,783			59,069			3	%
Taxes, other than income		36,903			32,751			13	%
Asset impairment		5,288			—			100	%
Total operating expenses		226,598			197,965			14	%
Operating income		22,791			39,195			(42	)%
Miscellaneous expense		(11,059	)		(2,637	)		(319	)%
Interest charges		33,896			38,194			(11	)%
Loss from continuing operations before income taxes		(22,164	)		(1,636	)		(1,255	)%
Income tax benefit		(21,878	)		(1,873	)		(1,068	)%
Income (loss) from continuing operations		(286	)		237			(221	)%
Income from discontinued operations, net of tax		1,904			1,724			10	%
Gain on sale of discontinued operations, net of tax		6,349			—			100	%
Net income	$	7,967		$	1,961			306	%
Basic earnings per share
Income (loss) per share from continuing operations	$	—		$	—
Income per share from discontinued operations		0.09			0.02
Net income per share – basic	$	0.09		$	0.02
Diluted earnings per share
Income (loss) per share from continuing operations	$	—		$	—
Income per share from discontinued operations		0.09			0.02
Net income per share – diluted	$	0.09		$	0.02
Cash dividends per share	$	0.345		$	0.340
Weighted average shares outstanding:
Basic		90,207			90,132
Diluted		91,224			90,576
	Three Months Ended September 30						Percentage
Summary Net Income (Loss) by Segment (000s)	2012			2011			Change
Natural gas distribution – continuing operations	$	(10,221	)	$	(7,713	)		(33	)%
Natural gas distribution – discontinued operations		8,253			1,724			379	%
Regulated transmission and storage		14,881			14,022			6	%
Nonregulated		7,419			(1,208	)		714	%
Unrealized margins, net of tax		(12,365	)		(4,864	)		(154	)%
Consolidated net income	$	7,967		$	1,961			306	%

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Atmos Energy Corporation

Financial Highlights, continued (Unaudited)

Discontinued Operations	Three Months Ended September 30				Year Ended September 30
(000s)	2012		2011		2012		2011
Operating revenues	$	11,596	$	18,574	$	114,703	$	141,227
Purchased gas cost		4,966		8,475		62,902		83,537
Gross profit		6,630		10,099		51,801		57,690
Operating expenses		4,105		6,681		24,174		27,362
Operating income		2,525		3,418		27,627		30,328
Other nonoperating income		106		37		611		57
Income from discontinued operations before income taxes		2,631		3,455		28,238		30,385
Income tax expense		727		1,731		10,066		12,372
Income from discontinued operations		1,904		1,724		18,172		18,013
Gain on sale of discontinued operations, net of tax		6,349		—		6,349		—
Net income from discontinued operations	$	8,253	$	1,724	$	24,521	$	18,013

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Atmos Energy Corporation

Financial Highlights, continued (Unaudited)

Condensed Balance Sheets	September 30,		September 30,
(000s)	2012		2011
Net property, plant and equipment	$	5,475,604	$	5,147,918
Cash and cash equivalents		64,239		131,419
Accounts receivable, net		234,526		273,303
Gas stored underground		256,415		289,760
Other current assets		272,782		316,471
Total current assets		827,962		1,010,953
Goodwill and intangible assets		740,847		740,207
Deferred charges and other assets		451,262		383,793
	$	7,495,675	$	7,282,871
Shareholders’ equity	$	2,359,243	$	2,255,421
Long-term debt		1,956,305		2,206,117
Total capitalization		4,315,548		4,461,538
Accounts payable and accrued liabilities		215,229		291,205
Other current liabilities		489,665		367,563
Short-term debt		570,929		206,396
Current maturities of long-term debt		131		2,434
Total current liabilities		1,275,954		867,598
Deferred income taxes		1,015,083		960,093
Deferred credits and other liabilities		889,090		993,642
	$	7,495,675	$	7,282,871

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Atmos Energy Corporation

Financial Highlights, continued (Unaudited)

Condensed Statements of Cash Flows	Year Ended September 30
(000s)	2012			2011
Cash flows from operating activities
Net income	$	216,717		$	207,601
Asset impairments		5,288			30,270
Gain on sale of discontinued operations		(9,868	)		—
Depreciation and amortization		246,577			233,383
Deferred income taxes		104,319			117,353
Other		26,876			20,063
Changes in assets and liabilities		(2,992	)		(25,826	)
Net cash provided by operating activities		586,917			582,844
Cash flows from investing activities
Capital expenditures		(732,858	)		(622,965	)
Proceeds from the sale of discontinued operations		128,223			—
Other, net		(4,625	)		(4,421	)
Net cash used in investing activities		(609,260	)		(627,386	)
Cash flows from financing activities
Net increase in short-term debt		354,141			83,306
Net proceeds from issuance of long-term debt		—			394,466
Settlement of Treasury lock agreements		—			20,079
Unwinding of Treasury lock agreements		—			27,803
Repayment of long-term debt		(257,034	)		(360,131	)
Cash dividends paid		(125,796	)		(124,011	)
Repurchase of common stock		(12,535	)		—
Repurchase of equity awards		(5,219	)		(5,299	)
Issuance of common stock		1,606			7,796
Net cash provided by (used in) financing activities		(44,837	)		44,009
Net decrease in cash and cash equivalents		(67,180	)		(533	)
Cash and cash equivalents at beginning of period		131,419			131,952
Cash and cash equivalents at end of period	$	64,239		$	131,419

	Three Months Ended September 30				Year Ended September 30
Statistics, including discontinued operations	2012		2011		2012		2011
Consolidated natural gas distribution throughput (MMcf as metered)		58,641		58,081		390,983		424,020
Consolidated regulated transmission and storage transportation volumes (MMcf)		133,186		129,114		466,527		435,012
Consolidated nonregulated delivered gas sales volumes (MMcf)		81,256		94,313		351,628		384,799
Natural gas distribution meters in service		3,116,589		3,213,191		3,116,589		3,213,191
Natural gas distribution average cost of gas	$	4.13	$	6.12	$	4.64	$	5.30
Nonregulated net physical position (Bcf)		18.8		21.0		18.8		21.0

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