UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
 
Form 10-K
 
     
(Mark One)    
 
     
þ
  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    For the fiscal year ended September 30, 2006
    OR
o
  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    For the transition period from           to
 
Commission file number 1-10042
 
Atmos Energy Corporation
(Exact name of registrant as specified in its charter)
 
     
Texas and Virginia   75-1743247
(State or other jurisdiction of
incorporation or organization)
  (IRS employer
identification no.)
Three Lincoln Centre, Suite 1800
5430 LBJ Freeway, Dallas, Texas
(Address of principal executive offices)
  75240
(Zip code)
 
Registrant’s telephone number, including area code:
(972) 934-9227
 
Securities registered pursuant to Section 12(b) of the Act:
 
     
    Name of Each Exchange
Title of Each Class
 
on Which Registered
 
Common stock, No Par Value   New York Stock Exchange
 
Securities registered pursuant to Section 12(g) of the Act:
None
 
 
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes  þ      No  o
 
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.  Yes  o      No  þ
 
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes  þ      No  o
 
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.   þ
 
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):
 
Large accelerated filer  þ      Accelerated filer  o      Non-accelerated filer  o
 
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes  o      No  þ
 
The aggregate market value of the voting stock held by non-affiliates of the registrant as of the last business day of the registrant’s most recently completed second fiscal quarter, March 31, 2006, was $2,064,662,421.
 
As of November 8, 2006, the registrant had 81,823,767 shares of common stock outstanding.
 
DOCUMENTS INCORPORATED BY REFERENCE
 
Portions of the registrant’s Definitive Proxy Statement to be filed for the Annual Meeting of Shareholders on February 7, 2007 are incorporated by reference into Part III of this report.
 


 

 
TABLE OF CONTENTS
 
                 
        Page
 
  3
 
  Business   4
  Risk Factors   23
  Unresolved Staff Comments   27
  Properties   27
  Legal Proceedings   30
  Submission of Matters to a Vote of Security Holders   30
 
  Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities   32
  Selected Financial Data   33
  Management’s Discussion and Analysis of Financial Condition and Results of Operations   35
  Quantitative and Qualitative Disclosures About Market Risk   62
  Financial Statements and Supplementary Data   64
  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure   124
  Controls and Procedures   124
  Other Information   126
 
  Directors and Executive Officers of the Registrant   126
  Executive Compensation   126
  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters   126
  Certain Relationships and Related Transactions   126
  Principal Accountant Fees and Services   127
 
  Exhibits and Financial Statement Schedules   127
  Statement of Computation of Ratio of Earnings to Fixed Charges
  Subsidiaries of the Registrant
  Consent of Ernst & Young LLP
  Rule 13a-14(a)/15d-14(a) Certifications
  Section 1350 Certifications
  Annual Certification Pursuant to Section 303A.12


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GLOSSARY OF KEY TERMS
 
AEC
Atmos Energy Corporation
 
AEH
Atmos Energy Holdings, Inc.
 
AEM
Atmos Energy Marketing, LLC
 
AES
Atmos Energy Services, LLC
 
APB
Accounting Principles Board
 
APS
Atmos Pipeline and Storage, LLC
 
ATO
Trading symbol for Atmos Energy Corporation common stock on the New York Stock Exchange
 
Bcf
Billion cubic feet
 
COSO
Committee of Sponsoring Organizations of the Treadway Commission
 
EITF
Emerging Issues Task Force
 
FASB
Financial Accounting Standards Board
 
FERC
Federal Energy Regulatory Commission
 
FIN
FASB Interpretation
 
Fitch
Fitch Ratings, Ltd.
 
FSP
FASB Staff Position
 
GRIP
Gas Reliability Infrastructure Program
 
Heritage
Heritage Propane Partners, L.P.
 
iFERC
Inside FERC
 
KPSC
Kentucky Public Service Commission
 
LGS
Louisiana Gas Service Company and LGS Natural Gas Company, which were acquired July 1, 2001
 
LPSC
Louisiana Public Service Commission
 
Mcf
Thousand cubic feet
 
MDWQ
Maximum daily withdrawal quantity
 
MMcf
Million cubic feet
 
Moody’s
Moody’s Investor Services, Inc.
 
MPSC
Mississippi Public Service Commission
 
MVG
Mississippi Valley Gas Company, which was acquired
December 3, 2002
 
NYMEX
New York Mercantile Exchange, Inc.
 
NYSE
New York Stock Exchange
 
RRC
Railroad Commission of Texas
 
RSC
Rate Stabilization Clause
 
S&P
Standard & Poor’s Corporation
 
SEC
United States Securities and Exchange Commission
 
SFAS
Statement of Financial Accounting Standards
 
TXU Gas
TXU Gas Company, which was acquired on October 1, 2004
 
USP
U.S. Propane, L.P.
 
VCC
Virginia Corporation Commission
 
WNA
Weather Normalization Adjustment


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PART I
 
The terms “we,” “our,” “us,” “Atmos” and “Atmos Energy” refer to Atmos Energy Corporation and its subsidiaries, unless the context suggests otherwise.
 
ITEM 1.    Business
 
Overview
 
Atmos Energy Corporation, headquartered in Dallas, Texas, is engaged primarily in the natural gas utility business as well as other natural gas nonutility businesses. We are one of the country’s largest natural-gas-only distributors based on number of customers and one of the largest intrastate pipeline operators in Texas based upon miles of pipe. As of September 30, 2006, we distributed natural gas through sales and transportation arrangements to approximately 3.2 million residential, commercial, public authority and industrial customers through our seven regulated utility divisions, which covered service areas in 12 states. Our primary service areas are located in Colorado, Kansas, Kentucky, Louisiana, Mississippi, Tennessee and Texas. We have more limited service areas in Georgia, Illinois, Iowa, Missouri and Virginia. In addition, we transport natural gas for others through our distribution system.
 
Through our nonutility businesses, we primarily provide natural gas management and marketing services to municipalities, other local gas distribution companies and industrial customers in 22 states and natural gas transportation and storage services to certain of our utility divisions and to third parties.
 
We were organized under the laws of Texas in 1983 as Energas Company for the purpose of owning and operating the natural gas distribution business of Pioneer Corporation in Texas. In September 1988, we changed our name to Atmos Energy Corporation. As a result of the merger with United Cities Gas Company in July 1997, we also became incorporated in Virginia.
 
Operating Segments
 
Our operations are divided into four segments:
 
  •  the utility segment, which includes our regulated natural gas distribution and related sales operations,
 
  •  the natural gas marketing segment, which includes a variety of nonregulated natural gas management services,
 
  •  the pipeline and storage segment, which includes our regulated and nonregulated natural gas transmission and storage services and
 
  •  the other nonutility segment, which includes all of our other nonregulated nonutility operations.
 
Strategy
 
Our overall strategy is to:
 
  •  deliver superior shareholder value,
 
  •  improve the quality and consistency of earnings growth, while operating our natural gas utility and nonutility businesses exceptionally well and
 
  •  enhance and strengthen a culture built on our core values.
 
Over the last five years, we have primarily grown through two significant acquisitions, our acquisition in December 2002 of Mississippi Valley Gas Company (MVG) and our acquisition in October 2004 of the natural gas distribution and pipeline operations of TXU Gas Company (TXU Gas).
 
We have experienced over 20 consecutive years of increasing dividends and earnings growth after giving effect to our acquisitions. We have achieved this record of growth while operating our utility operations efficiently by managing our operating and maintenance expenses and leveraging our technology, such as our 24-hour call centers, to achieve more efficient operations. In addition, we have focused on regulatory rate


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proceedings to increase revenue as our costs increase and mitigated weather-related risks through weather-normalized rates that now apply to most of our service areas. We have also strengthened our nonutility businesses by increasing gross profit margins, actively pursuing opportunities to increase the amount of storage available to us and expanding commercial opportunities in our pipeline and storage segment.
 
Our core values include focusing on our employees and customers while conducting our business with honesty and integrity. We continue to strengthen our culture through ongoing communications with our employees and enhanced employee training.
 
Utility Segment Overview
 
We operated our utility segment through the following seven regulated natural gas utility divisions during the year ended September 30, 2006:
 
  •  Atmos Energy Colorado-Kansas Division,
 
  •  Atmos Energy Kentucky Division,
 
  •  Atmos Energy Louisiana Division,
 
  •  Atmos Energy Mid-States Division,
 
  •  Atmos Energy Mid-Tex Division,
 
  •  Atmos Energy Mississippi Division and
 
  •  Atmos Energy West Texas Division.
 
Effective October 1, 2006, the Kentucky and Mid-States Divisions were combined.
 
Our natural gas utility distribution business is seasonal and dependent on weather conditions in our service areas. Gas sales to residential and commercial customers are greater during the winter months than during the remainder of the year. The volumes of gas sales during the winter months will vary with the temperatures during these months.
 
In addition to weather, our financial results are affected by the cost of natural gas and economic conditions in the areas that we serve. Higher gas costs, which we are generally able to pass through to our customers under purchased gas adjustment clauses, may cause customers to conserve or, in the case of industrial customers, to use alternative energy sources. Higher gas costs may also adversely impact our accounts receivable collections, resulting in higher bad debt expense and may require us to increase borrowings under our credit facilities resulting in higher interest expense.
 
The effect of weather that is above or below normal is substantially offset through weather normalization adjustments, known as WNA, which are now approved by the regulators for over 90 percent of residential and commercial meters in our service areas. WNA allows us to increase customers’ bills to offset lower gas usage when weather is warmer than normal and decrease customers’ bills to offset higher gas usage when weather is colder than normal.
 
Prior to October 1, 2006, our largest division, the Mid-Tex Division, did not have WNA. However, its operations benefited from a rate structure that combined a monthly customer charge with a declining block rate schedule to partially mitigate the impact of warmer-than-normal weather on revenue. The combination of the monthly customer charge and the customer billing under the first block of the declining block rate schedule provided for the recovery of most of our fixed costs for such operations under most weather conditions. However, this rate structure was not as beneficial during periods where weather was significantly warmer than normal.
 
In May 2006, the Mid-Tex Division filed a Statement of Intent seeking additional annual revenues of $60 million and several rate design changes including WNA. In July 2006, the Railroad Commission of Texas


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(RRC) approved an interim and a permanent WNA, effective October 1, 2006 for the Mid-Tex Division. The agreement provided that the interim WNA will be based on the use of 30 years of weather history, while the permanent WNA will allow the parties to contest the appropriate period of weather data to use in calculating normal weather. The permanent WNA will also be modified or adjusted to conform to the rate design that the RRC ultimately approves in the case. Additionally, in May 2006, we agreed to a settlement with the Louisiana Public Service Commission (LPSC) that authorized the implementation of WNA in our Louisiana Division effective December 1, 2006.
 
As of September 30, 2006 we had, or received regulatory approvals for WNA for our customer meters in the following service areas for the following periods:
 
     
Georgia
  October — May
Kansas
  October — May
Kentucky
  November — April
Louisiana (1)
  December  — March
Mid-Tex (1)
  October — May
Mississippi
  November — April
Tennessee
  November — April
Amarillo, Texas
  October — May
West Texas
  October — May
Lubbock, Texas
  October — May
Virginia
  January — December
 
 
(1) Effective beginning with the 2006-2007 winter heating season.
 
Our natural gas supply comes from a variety of third-party providers and from gas held in storage. We anticipate that the natural gas supply for the upcoming winter heating season will be provided by a variety of suppliers, including independent producers, marketers and pipeline companies, in addition to withdrawals of gas from storage. Additionally, the natural gas supply for our Mid-Tex Division includes peaking and spot purchase agreements. We also contract for storage service in underground storage facilities on many of the interstate pipelines serving us. We estimate the peak-day availability of natural gas supply from long-term contracts, short-term contracts and withdrawals from underground storage to be approximately 4.2 Bcf. The peak-day demand for our utility operations in fiscal 2006 was on December 8, 2005, when sales to customers reached approximately 3.4 Bcf.
 
Supply arrangements are contracted from our suppliers on a firm basis with various terms at market prices. The firm supply consists of both base load and swing supply quantities. Base load quantities are those that flow at a constant level throughout the month and swing supply quantities provide the flexibility to change daily quantities to match increases or decreases in requirements related to weather conditions. Except for local production purchases, we select suppliers through a competitive bidding process by requesting proposals from suppliers that have demonstrated that they can provide reliable service. We select these suppliers based on their ability to deliver gas supply to our designated firm pipeline receipt points at the lowest cost. Major suppliers during fiscal 2006 were Anadarko Energy Services, BP Energy Company, Chesapeake Energy Marketing, Inc., ConocoPhillips Company, Cross Timbers Energy Services, Inc., Devon Gas Services, L.P., Enbridge Marketing (US) L.P., PPM Energy, Inc., Tenaska Marketing and Atmos Energy Marketing, LLC, our natural gas marketing subsidiary.
 
The combination of base load, peaking and spot purchase agreements, coupled with the withdrawal of gas held in storage, allows us the flexibility to adjust to changes in weather, which minimizes our need to enter into long-term firm commitments.
 
Also, to maintain our deliveries to high priority customers, we have the ability, and have exercised our right, to curtail deliveries to certain customers under the terms of interruptible contracts or applicable state statutes or regulations. Our customers’ demand on our system is not necessarily indicative of our ability to


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meet current or anticipated market demands or immediate delivery requirements because of factors such as the physical limitations of gathering, storage and transmission systems, the duration and severity of cold weather, the availability of gas reserves from our suppliers, the ability to purchase additional supplies on a short-term basis and actions by federal and state regulatory authorities. Curtailment rights provide us the flexibility to meet the human-needs requirements of our customers on a firm basis. Priority allocations imposed by federal and state regulatory agencies, as well as other factors beyond our control, may affect our ability to meet the demands of our customers. We anticipate no problems with obtaining additional gas supply as needed for our customers.
 
We receive gas deliveries for all of our utility divisions, except for our Mid-Tex Division, through 37 pipeline transportation companies, both interstate and intrastate, to satisfy our natural gas needs. The pipeline transportation agreements are firm and many of them have “pipeline no-notice” storage service which provides for daily balancing between system requirements and nominated flowing supplies. These agreements have been negotiated with the shortest term necessary while still maintaining our right of first refusal. The natural gas supply for our Mid-Tex Division is delivered by our Atmos Pipeline — Texas Division.
 
The following is a brief description of our seven natural gas utility divisions. Additional information for our natural gas utility divisions is presented under the caption “Operating Statistics”.
 
Atmos Energy Colorado-Kansas Division.   Our Colorado-Kansas Division operates in Colorado, Kansas and the southwestern corner of Missouri and is regulated by each respective state’s public service commission with respect to accounting, rates and charges, operating matters and the issuance of securities. We operate under terms of non-exclusive franchises granted by the various cities. Rates in our Kansas service area are subject to WNA. The principal transporters of the Colorado-Kansas Division’s gas supply requirements are Colorado Interstate Gas Company, Northwest Pipeline, Public Service Company of Colorado and Southern Star Central Pipeline. Additionally, the Colorado-Kansas Division purchases substantial volumes from producers that are connected directly to its distribution system.
 
Atmos Energy Kentucky Division.   Our Kentucky Division operates in Kentucky and is regulated by the Kentucky Public Service Commission (KPSC), which regulates utility services, rates, issuance of securities and other matters. We operate in various incorporated cities pursuant to non-exclusive franchises granted by these cities. The sale of natural gas for use as vehicle fuel in Kentucky is unregulated. In February 2006, the KPSC approved our request to continue the performance-based ratemaking mechanism for an additional five-year period. Under the performance-based mechanism, we and our customers jointly share in any actual gas cost savings achieved when compared to pre-determined benchmarks. Our rates are also subject to WNA. The Kentucky Division’s gas supply is delivered primarily by Midwestern Pipeline, Tennessee Gas Pipeline Company, Texas Gas Transmission LLC and Trunkline Gas Company. As noted below, this division was combined with the Mid-States Division effective October 1, 2006.
 
Atmos Energy Louisiana Division.   Our Louisiana Division operates in Louisiana and serves the metropolitan area of Monroe, the suburban areas of New Orleans and western Louisiana. Our Louisiana Division is regulated by the Louisiana Public Service Commission, which regulates utility services, rates and other matters. We operate most of our service areas pursuant to a non-exclusive franchise granted by the governing authority of each area. Direct sales of natural gas to industrial customers in Louisiana, who use gas for fuel or in manufacturing processes, and sales of natural gas for vehicle fuel are exempt from regulation and are recognized in our natural gas marketing segment. Effective beginning with the 2006-2007 winter heating season, rates in our Louisiana service area will be subject to WNA. The principal transporters of the Louisiana Division’s gas supply requirements are Acadian Pipeline, Gulf South, Louisiana Intrastate Gas Company, Texas Gas Transmission LLC and Trans Louisiana Gas Pipeline, Inc., a subsidiary of Atmos Pipeline and Storage, LLC.
 
Atmos Energy Mid-States Division.   Our Mid-States Division operates in Georgia, Illinois, Iowa, Missouri, Tennessee and Virginia. In each of these states, our rates, services and operations as a natural gas distribution company are subject to general regulation by each state’s public service commission. We operate in each community, where necessary, under a franchise granted by the municipality for a fixed term of years. In Tennessee and Georgia, we have WNA and a performance-based rate program, which provides incentives


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for us to find ways to lower costs and share the cost savings with our customers. We have WNA in our Virginia service area that covers the entire year. Our Mid-States Division is served by 13 interstate pipelines; however, the majority of the volumes are transported through Columbia Gulf, East Tennessee Pipeline, Southern Natural Gas and Tennessee Gas Pipeline. The Kentucky Division was combined with the Mid-States Division effective October 1, 2006.
 
Atmos Energy Mid-Tex Division.   Our Mid-Tex Division includes the natural gas distribution operations that operate in the north-central, eastern and western parts of Texas. The Mid-Tex Division purchases, distributes and sells natural gas in approximately 550 cities and towns, including the 11-county Dallas/Fort Worth metropolitan area. This division currently operates under a system-wide rate structure. The governing body of each municipality we serve has original jurisdiction over all utility rates, operations and services within its city limits, except with respect to sales of natural gas for vehicle fuel and agricultural use. We operate pursuant to non-exclusive franchises granted by the municipalities we serve, which are subject to renewal from time to time. The RRC has exclusive appellate jurisdiction over all rate and regulatory orders and ordinances of the municipalities and exclusive original jurisdiction over rates and services to customers not located within the limits of a municipality. Effective beginning with the 2006-2007 winter heating season, rates in our Mid-Tex service area will be subject to WNA.
 
Atmos Energy Mississippi Division.   Our Atmos Energy Mississippi Division operates in Mississippi and is regulated by the Mississippi Public Service Commission (MPSC) with respect to rates, services and operations. We operate under non-exclusive franchises granted by the municipalities we serve. Through fiscal 2005, we operated under a rate structure that allowed us, over a five-year period, to recover a portion of our integration costs associated with the MVG acquisition and operations and maintenance costs in excess of an agreed-upon benchmark. In addition, we were required to file for rate adjustments based on our expenses every six months. Effective October 1, 2005, our rate design was modified to substitute the original agreed-upon benchmark with a sharing mechanism to allow the sharing of cost savings above an allowed return on equity level. Further, beginning October 1, 2005, we moved from a semi-annual filing process to an annual filing process. We also have WNA in Mississippi. This division’s gas supply is delivered primarily by Gulf South Pipeline Company, Tennessee Gas Pipeline Company, Southern Natural Gas Company, Texas Eastern Transmission, Texas Gas Transmission LLC, Trunkline Gas Co. LLC and Enbridge Marketing LP.
 
Atmos Energy West Texas Division.   Our West Texas Division operates in Texas in three primary service areas: the Amarillo service area, the Lubbock service area and the West Texas service area. Similar to our Mid-Tex Division, the governing body of each municipality we serve has original jurisdiction over all utility rates, operations and services within its city limits, except with respect to sales of natural gas for vehicle fuel and agricultural use. We operate pursuant to non-exclusive franchises granted by the municipalities we serve, which are subject to renewal from time to time. The RRC has exclusive appellate jurisdiction over all rate and regulatory orders and ordinances of the municipalities and exclusive original jurisdiction over rates and services to customers not located within the limits of a municipality. We have WNA in each of our service areas. Our West Texas Division receives transportation service from ONEOK Pipeline. In addition, the West Texas Division purchases a significant portion of its natural gas supply from Pioneer Natural Resources, which is connected directly to our Amarillo, Texas, distribution system.
 
Natural Gas Marketing Segment Overview
 
Our natural gas marketing and other nonutility segments, which are organized under Atmos Energy Holdings, Inc. (AEH), have operations in 22 states. Through September 30, 2003, Atmos Energy Marketing, LLC, together with its wholly-owned subsidiaries Woodward Marketing, L.L.C. and Trans Louisiana Industrial Gas Company, Inc., comprised our natural gas marketing segment. Effective October 1, 2003, our natural gas marketing segment was reorganized. The operations of Atmos Energy Marketing, L.L.C. and Trans Louisiana Industrial Gas Company, Inc. were merged into Woodward Marketing, L.L.C., which was renamed Atmos Energy Marketing, LLC (AEM).
 
We acquired a 45 percent interest in Woodward Marketing, L.L.C. in July 1997 as a result of the merger of Atmos Energy and United Cities Gas Company, which had acquired that interest in May 1995. In April


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2001, we acquired the remaining 55 percent interest that we did not own for 1,423,193 restricted shares of our common stock.
 
AEM provides a variety of natural gas management services to municipalities, natural gas utility systems and industrial natural gas consumers primarily in the southeastern and midwestern states and to our Kentucky, Louisiana and Mid-States divisions. These services primarily consist of furnishing natural gas supplies at fixed and market-based prices, contract negotiation and administration, load forecasting, gas storage acquisition and management services, transportation services, peaking sales and balancing services, capacity utilization strategies and gas price management through the use of derivative products. We use proprietary and customer-owned transportation and storage assets to provide the various services our customers request. As a result, our revenues arise from the types of commercial transactions we have structured with our customers and include the value we extract by optimizing the storage and transportation capacity we own or control as well as revenues for services we deliver.
 
We participate in transactions in which we combine the natural gas commodity and transportation costs to minimize our costs incurred to serve our customers. Additionally, we participate in natural gas storage transactions in which we seek to capture the pricing differences that occur over time. We purchase physical natural gas and then sell financial contracts at favorable prices to lock in a gross profit margin. Through the use of transportation and storage services and derivatives, we are able to capture gross profit margin through the arbitrage of pricing differences in various locations and by recognizing pricing differences that occur over time.
 
AEM’s management of natural gas requirements involves the sale of natural gas and the management of storage and transportation supplies under contracts with customers generally having one to two year terms. AEM also sells natural gas to some of its industrial customers on a delivered burner tip basis under contract terms from 30 days to two years. At September 30, 2006, AEM had a total of 679 industrial, 73 municipal and 289 other customers.
 
Pipeline and Storage Segment Overview
 
Our pipeline and storage segment consists of the regulated pipeline and storage operations of the Atmos Pipeline — Texas Division and the nonregulated pipeline and storage operations of Atmos Pipeline and Storage, LLC (APS). The Atmos Pipeline — Texas Division transports natural gas to our Mid-Tex Division, transports natural gas for third parties and manages five underground storage reservoirs in Texas. We also provide ancillary services customary in the pipeline industry including parking arrangements, lending and sales of inventory on hand. Parking arrangements provide short-term interruptible storage of gas on our pipeline and lending services provide short-term interruptible loans of natural gas from our pipeline to meet market demands. Both of these services are primarily offered on our Atmos Pipeline — Texas system. These operations represent one of the largest intrastate pipeline operations in Texas with a heavy concentration in the established natural gas-producing areas of central, northern and eastern Texas, extending into or near the major producing areas of the Texas Gulf Coast and the Delaware and Val Verde Basins of West Texas. Nine basins located in Texas are believed to contain a substantial portion of the nation’s remaining onshore natural gas reserves. This pipeline system provides access to all of these basins.
 
APS owns or has an interest in underground storage fields in Kentucky and Louisiana. We also use these storage facilities to reduce the need to contract for additional pipeline capacity to meet customer demand during peak periods.
 
In May 2006, APS announced plans to form a joint venture with a local natural gas producer to construct a natural gas gathering system in Eastern Kentucky. Referred to as the Straight Creek Project, the new system is expected to relieve severe gas gathering and transportation constraints that historically have burdened natural gas producers in the area and should improve delivery reliability to natural gas customers. In October 2006, the Federal Energy Regulatory Commission (FERC) issued a declaratory order finding that the Straight Creek Project will be exempt from FERC jurisdiction. The joint venture provides APS the opportunity to apply its expertise to the upstream gathering business.


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Other Nonutility Segment Overview
 
Our other nonutility segment consists primarily of the operations of Atmos Energy Services, LLC (AES), and Atmos Power Systems, Inc. which are wholly-owned by our subsidiary, Atmos Energy Holdings, Inc. Through AES, we provide natural gas management services to our utility operations, other than the Mid-Tex Division. These services, which began in April 2004, include aggregating and purchasing gas supply, arranging transportation and storage logistics and ultimately delivering the gas to our utility service areas at competitive prices in exchange for revenues that are equal to the costs incurred to provide those services. Through Atmos Power Systems, Inc., we have constructed electric peaking power-generating plants and associated facilities and have entered into agreements to lease these plants.
 
Through January 2004, United Cities Propane Gas, Inc., a wholly-owned subsidiary of Atmos Energy Holdings, Inc., owned an approximate 19 percent membership interest in U.S. Propane L.P. (USP), a joint venture formed in February 2000 with other utility companies to own a limited partnership interest in Heritage Propane Partners, L.P. (Heritage), a publicly-traded marketer of propane through a nationwide retail distribution network. During fiscal 2004, we sold our interest in USP and Heritage. As a result of these transactions, we no longer have an interest in the propane business.


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Operating Statistics
 
The following tables present certain operating statistics for our utility, natural gas marketing, pipeline and storage and other nonutility segments for each of the five fiscal years from 2002 through 2006.
 
Utility Sales and Statistical Data
 
                                         
    Year Ended September 30  
    2006     2005 (1)     2004     2003 (1)     2002  
 
METERS IN SERVICE, end of year
                                       
Residential
    2,886,042       2,862,822       1,506,777       1,498,586       1,247,247  
Commercial
    275,577       274,536       151,381       151,008       122,156  
Industrial
    2,661       2,715       2,436       3,799       2,118  
Agricultural
    8,714       9,639       8,397       9,514       10,576  
Public authority and other
    8,205       8,128       10,145       9,891       7,244  
                                         
Total meters
    3,181,199       3,157,840       1,679,136       1,672,798       1,389,341  
                                         
HEATING DEGREE DAYS (2)
                                       
Actual (weighted average)
    2,527       2,587       3,271       3,473       3,368  
Percent of normal
    87%       89%       96%       101%       94%  
UTILITY SALES VOLUMES — MMcf (3)
                                       
Gas Sales Volumes
                                       
Residential
    144,780       162,016       92,208       97,953       77,386  
Commercial
    87,006       92,401       44,226       45,611       35,796  
Industrial
    26,161       29,434       22,330       23,738       14,499  
Agricultural
    5,629       3,348       4,642       7,884       10,988  
Public authority and other
    8,457       9,084       9,813       9,326       5,875  
                                         
Total gas sales volumes
    272,033       296,283       173,219       184,512       144,544  
Utility transportation volumes
    126,960       122,098       87,746       70,159       69,589  
                                         
Total utility throughput
    398,993       418,381       260,965       254,671       214,133  
                                         
UTILITY OPERATING REVENUES (000’s) (3)
                                       
Gas Sales Revenues
                                       
Residential
  $ 2,068,736     $ 1,791,172     $ 923,773     $ 873,375     $ 535,981  
Commercial
    1,061,783       869,722       400,704       367,961       221,728  
Industrial
    276,186       229,649       155,336       151,969       70,164  
Agricultural
    40,664       27,889       31,851       48,625       37,951  
Public authority and other
    103,936       86,853       77,178       65,921       31,731  
                                         
Total utility gas sales revenues
    3,551,305       3,005,285       1,588,842       1,507,851       897,555  
Transportation revenues
    62,215       59,996       31,714       30,461       28,786  
Other gas revenues
    37,071       37,859       17,172       15,770       11,185  
                                         
Total utility operating revenues
  $ 3,650,591     $ 3,103,140     $ 1,637,728     $ 1,554,082     $ 937,526  
                                         
Utility average transportation revenue per Mcf
  $ 0.49     $ 0.49     $ 0.36     $ 0.43     $ 0.41  
Utility average cost of gas per Mcf sold
  $ 10.02     $ 7.41     $ 6.55     $ 5.76     $ 3.87  
                     
Employees
    4,402       4,327       2,742       2,817       2,255  
 
See footnotes following these tables.


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Utility Sales and Statistical Data By Division
 
                                                                         
    Year Ended September 30, 2006  
    Colorado-
                Mid-
    West
                      Total
 
    Kansas     Kentucky     Louisiana     States     Texas     Mississippi     Mid-Tex     Other (4)     Utility  
 
METERS IN SERVICE
                                                                       
Residential
    213,566       158,408       330,694       277,998       273,520       241,406       1,390,450             2,886,042  
Commercial
    21,440       18,228       23,108       36,686       25,984       27,868       122,263             275,577  
Industrial
    84       240             681       808       643       205             2,661  
Agricultural
    312                         8,402                         8,714  
Public authority and other
    543       1,637             1,034       2,166       2,825                   8,205  
                                                                         
Total
    235,945       178,513       353,802       316,399       310,880       272,742       1,512,918             3,181,199  
                                                                         
HEATING DEGREE DAYS (2)
                                                                       
Actual
    5,466       4,349       1,319       3,515       3,561       2,757       1,697             2,527  
Percent of normal
    99%       100%       78%       95%       100%       102%       72%             87%  
SALES VOLUMES — MMcf (3)
                                                                       
Gas Sales Volumes
                                                                       
Residential
    15,113       9,249       12,131       15,065       15,609       12,601       65,012             144,780  
Commercial
    5,901       4,526       6,944       11,328       6,309       6,440       45,558             87,006  
Industrial
    419       1,830             6,945       3,933       8,250       4,784             26,161  
Agricultural
    619                         5,010                         5,629  
Public authority and other
    1,390       1,237             226       1,962       3,642                   8,457  
                                                                         
Total
    23,442       16,842       19,075       33,564       32,823       30,933       115,354             272,033  
Transportation Volumes
    9,680       25,871       6,310       20,654       15,135       1,702       47,608             126,960  
                                                                         
Total Throughput
    33,122       42,713       25,385       54,218       47,958       32,635       162,962             398,993  
                                                                         
OPERATING MARGIN (000’s) (3)
  $ 71,000     $ 50,271     $ 98,502     $ 106,742     $ 93,693     $ 92,515     $ 412,334     $     $ 925,057  
OPERATING EXPENSES (000’s) (3)
                                                                       
Operation and maintenance
  $ 28,235     $ 19,874     $ 40,741     $ 38,148     $ 33,332     $ 44,533     $ 154,412     $ (1,756 )   $ 357,519  
Depreciation and amortization
  $ 13,578     $ 11,636     $ 21,201     $ 22,172     $ 13,690     $ 10,596     $ 74,375     $ (2,755 )   $ 164,493  
Taxes, other than income
  $ 6,663     $ 4,423     $ 8,788     $ 10,867     $ 21,509     $ 14,110     $ 111,844     $     $ 178,204  
Impairment of long-lived assets
  $     $     $     $     $ 22,947     $     $     $     $ 22,947  
OPERATING INCOME (000’s) (3)
  $ 22,524     $ 14,338     $ 27,772     $ 35,555     $ 2,215     $ 23,276     $ 71,703     $ 4,511     $ 201,894  
CAPITAL EXPENDITURES (000’s)
  $ 19,466     $ 16,645     $ 32,218     $ 38,307     $ 27,374     $ 15,389     $ 134,762     $ 23,581     $ 307,742  
PROPERTY, PLANT AND EQUIPMENT, NET (000’s)
  $ 252,584     $ 190,959     $ 328,310     $ 436,916     $ 253,086     $ 226,690     $ 1,262,516     $ 132,240     $ 3,083,301  
OTHER STATISTICS, at year end
                                                                       
Miles of pipe
    6,601       3,937       8,214       8,015       14,831       6,415       27,856             75,869  
Employees
    263       220       412       416       341       437       1,458       855       4,402  
 
See footnotes following these tables.


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    Year Ended September 30, 2005  
    Colorado-
                Mid-
    West
                      Total
 
    Kansas     Kentucky     Louisiana     States     Texas     Mississippi     Mid-Tex     Other (4)     Utility  
 
METERS IN SERVICE
                                                                       
Residential
    209,321       159,216       348,576       276,667       267,278       244,136       1,357,628             2,862,822  
Commercial
    20,914       18,350       23,850       36,519       25,410       28,350       121,143             274,536  
Industrial
    81       239             684       816       664       231             2,715  
Agricultural
    279                         9,360                         9,639  
Public authority and other
    476       1,650             1,066       2,139       2,797                   8,128  
                                                                         
Total
    231,071       179,455       372,426       314,936       305,003       275,947       1,479,002             3,157,840  
                                                                         
HEATING DEGREE DAYS (2)
                                                                       
Actual
    5,437       4,241       1,301       3,510       3,536       2,583       1,904             2,587  
Percent of normal
    99%       98%       78%       93%       99%       96%       80%             89%  
SALES VOLUMES — MMcf (3)
                                                                       
Gas Sales Volumes
                                                                       
Residential
    16,404       10,741       13,134       16,222       19,292       12,985       73,238             162,016  
Commercial
    5,929       4,891       6,811       11,806       7,493       6,711       48,760             92,401  
Industrial
    338       1,858             8,205       4,477       9,057       5,499             29,434  
Agricultural
    246                         3,102                         3,348  
Public authority and other
    1,355       1,396             241       2,296       3,796                   9,084  
                                                                         
Total
    24,272       18,886       19,945       36,474       36,660       32,549       127,497             296,283  
Transportation Volumes
    8,388       26,066       7,046       20,142       12,390       1,309       46,757             122,098  
                                                                         
Total Throughput
    32,660       44,952       26,991       56,616       49,050       33,858       174,254             418,381  
                                                                         
OPERATING MARGIN (000’s) (3)
  $ 70,542     $ 52,302     $ 94,350     $ 110,012     $ 90,316     $ 91,610     $ 398,234     $     $ 907,366  
OPERATING EXPENSES (000’s) (3)
                                                                       
Operation and maintenance
  $ 26,679     $ 18,618     $ 37,994     $ 38,427     $ 29,701     $ 49,241     $ 146,449     $ (515 )   $ 346,594  
Depreciation and amortization
  $ 13,693     $ 11,739     $ 21,911     $ 23,615     $ 13,249     $ 10,830     $ 64,460     $     $ 159,497  
Taxes, other than income
  $ 5,013     $ 3,288     $ 9,626     $ 12,283     $ 19,846     $ 12,494     $ 102,360     $     $ 164,910  
OPERATING INCOME (000’s) (3)
  $ 25,157     $ 18,657     $ 24,819     $ 35,687     $ 27,520     $ 19,045     $ 84,965     $ 515     $ 236,365  
CAPITAL EXPENDITURES (000’s)
  $ 20,690     $ 17,525     $ 31,198     $ 34,176     $ 29,066     $ 15,925     $ 115,024     $ 36,970     $ 300,574  
PROPERTY, PLANT AND EQUIPMENT, NET (000’s)
  $ 244,250     $ 183,931     $ 318,869     $ 416,825     $ 263,285     $ 206,511     $ 1,167,425     $ 125,000     $ 2,926,096  
OTHER STATISTICS, at year end
                                                                       
Miles of pipe
    6,530       3,908       8,151       7,958       15,000       6,356       33,701             81,604  
Employees
    267       236       421       412       346       467       1,398       780       4,327  
 
See footnotes following these tables.


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Natural Gas Marketing, Pipeline and Storage and Other Nonutility Operations Sales and Statistical Data
 
                                         
    Year Ended September 30  
    2006     2005     2004     2003     2002  
 
CUSTOMERS, end of year Industrial
    746       624       638       644       641  
Municipal
    73       69       80       94       101  
Other
    467       401       237       202       117  
                                         
Total
    1,286       1,094       955       940       859  
                                         
NATURAL GAS MARKETING SALES VOLUMES — MMcf (3)
    336,516       273,201       265,090       294,785       273,692  
PIPELINE TRANSPORTATION VOLUMES — MMcf (3)
    590,985       563,949       9,395       11,648       12,788  
OPERATING REVENUES (000’s) (3) Natural gas marketing
  $ 3,156,524     $ 2,106,278     $ 1,618,602     $ 1,668,493     $ 1,031,874  
Pipeline and storage
    160,567       153,289       19,758       20,298       18,720  
Other nonutility
    5,898       5,302       3,393       2,853       5,985  
                                         
Total operating revenues
  $ 3,322,989     $ 2,264,869     $ 1,641,753     $ 1,691,644     $ 1,056,579  
                                         
Employees, at year end
    230       216       122       88       83  
 
 
Notes to preceding tables:
 
(1) The operational and statistical information includes the operations of the Mississippi Division since the December 3, 2002 acquisition date and the Mid-Tex and Atmos Pipeline — Texas Divisions since the October 1, 2004 acquisition date.
 
(2) A heating degree day is equivalent to each degree that the average of the high and the low temperatures for a day is below 65 degrees. The colder the climate, the greater the number of heating degree days. Heating degree days are used in the natural gas industry to measure the relative coldness of weather and to compare relative temperatures between one geographic area and another. Normal degree days are based on 30-year average National Weather Service data for selected locations. For service areas that have weather normalized operations, normal degree days are used instead of actual degree days in computing the total number of heating degree days.
 
(3) Sales volumes, revenues, operating margins, operating expense and operating income reflect segment operations, including intercompany sales and transportation amounts.
 
(4) The Other column represents our utility shared services unit, which provides administrative and other support to our seven regulated utility divisions. Certain costs incurred by this unit are not allocated to our utility divisions.
 
Ratemaking Activity
 
Overview
 
The method of determining regulated rates varies among the states in which our natural gas utility divisions operate. The regulators have the responsibility of ensuring that utilities under their jurisdictions operate in the best interests of customers while providing utility companies the opportunity to earn a reasonable return on investment. Generally, each regulatory authority reviews our rate request and establishes a rate structure intended to generate revenue sufficient to cover our costs of doing business and provide a reasonable return on invested capital.
 
Rates established by regulatory authorities are adjusted for increases and decreases in our purchased gas cost through purchased gas adjustment mechanisms. Purchased gas adjustment mechanisms provide gas utility companies a method of recovering purchased gas costs on an ongoing basis without filing a rate case to


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address all of the utility’s non-gas costs. These mechanisms are commonly utilized when regulatory authorities recognize a particular type of expense, such as purchased gas costs, that (i) is subject to significant price fluctuations compared to the utility’s other costs, (ii) represents a large component of the utility’s cost of service and (iii) is generally outside the control of the gas utility. There is no gross profit generated through purchased gas adjustments because they provide a dollar-for-dollar offset to increases or decreases in utility gas costs. Although substantially all of our utility sales to our customers fluctuate with the cost of gas that we purchase, utility gross profit (which is defined as operating revenues less purchased gas cost) is generally not affected by fluctuations in the cost of gas due to the purchased gas adjustment mechanism. Additionally, some jurisdictions have introduced performance-based ratemaking adjustments to provide incentives to natural gas utilities to minimize purchased gas costs through improved storage management and use of financial hedges to lock in gas costs. Under the performance-based ratemaking adjustment, purchased gas costs savings are shared between the utility and its customers.
 
The following table summarizes some information regarding our ratemaking jurisdictions. This information is for regulatory purposes only and may not be representative of our actual financial position.
 
Jurisdictional Rate Summary
 
                                     
        Effective
      Authorized
  Authorized
        Date of Last
  Rate Base
  Rate of
  Return on
Division   Jurisdiction   Rate Action   (thousands) (1)   Return (1)   Equity (1)
 
Atmos Pipeline — Texas
  Texas     5/24/04     $ 417,111       8.258 %     10.00 %
Colorado-Kansas
  Colorado     7/1/05       84,711       8.95 %     11.25 %
    Kansas     3/1/04       (2)       (2 )     (2 )
Kentucky
  Kentucky     12/21/99       (2)       (2 )     (2 )
Louisiana
  Trans LA     10/1/04       81,645       9.14 %     10.50% - 11.50%  
    LGS     10/1/04       170,358       9.23 %     10.88% - 11.50%  
Mid-States
  Georgia     12/20/05       62,380       7.57 %     10.13 %
    Illinois     11/1/00       24,564       9.18 %     11.56 %
    Iowa     3/1/01       5,000       (2 )     11.00 %
    Missouri     10/14/95       (2)       10.58 %     12.15 %
    Tennessee     11/15/95       111,970       (2 )     (2 )
    Virginia     8/1/04       30,672       8.46% - 8.96%       9.50% -10.50%  
Mid-Tex
  Texas     5/24/04       769,721       8.258 %     10.00 %
Mississippi
  Mississippi     1/1/05       196,801       8.23 %     9.80 %
West Texas
  Amarillo     9/1/03       36,844       9.88 %     12.00 %
    Lubbock     3/1/04       43,300       9.15 %     11.25 %
    West Texas     5/1/04       87,500       8.77 %     10.50 %
 
 
See footnotes on the following page.
 


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        Effective
  Authorized
  Bad
      Performance-
        Date of Last
  Debt/
  Debt
      Based Rate
Division   Jurisdiction   Rate Action   Equity Ratio   Rider (5)   WNA   Program (3)
 
Atmos Pipeline — Texas
  Texas     5/24/04       50/50       No       N/A       N/A  
Colorado-Kansas
  Colorado     7/1/05       52/48       No       No       No  
    Kansas     3/1/04       (2)       Yes       Yes       No  
Kentucky
  Kentucky     12/21/99       (2)       No       Yes       Yes  
Louisiana
  Trans LA     10/1/04       50/50       No       (4)       No  
    LGS     10/1/04       53/47       No       (4)       No  
Mid-States
  Georgia     12/20/05       55/45       No       Yes       Yes  
    Illinois     11/1/00       67/33       No       No       No  
    Iowa     3/1/01       57/43       No       No       No  
    Missouri     10/14/95       (2)       No       No       No  
    Tennessee     11/15/95       56/44       No       Yes       Yes  
    Virginia     8/1/04       52/48       Yes       Yes       No  
Mid-Tex
  Texas     5/24/04       50/50       No       (4)       No  
Mississippi
  Mississippi     1/1/05       47/53       No       Yes       No  
West Texas
  Amarillo     9/1/03       50/50       Yes       Yes       No  
    Lubbock     3/1/04       50/50       No       Yes       No  
    West Texas     5/1/04       50/50       No       Yes       No  
 
 
(1) The rate base and authorized rate of return presented in this table are the rate base and rate of return from the last base rate case for each jurisdiction. These rate bases and rates of return are not necessarily indicative of current or future rate bases or rates of return.
 
(2) A rate base, rate of return, return on equity or debt/equity ratio was not included in the respective state commission’s final decision.
 
(3) The performance-based rate program provides incentives to natural gas utilities to minimize purchased gas costs by allowing the utility and its customers to share the purchased gas cost savings.
 
(4) During 2006, our Louisiana and Mid-Tex Divisions received authorization to implement WNA beginning in the 2006-2007 winter heating season.
 
(5) The bad debt rider allows us to recover from ratepayers the gas cost portion of uncollectible accounts.
 
Recent Ratemaking Activity
 
Our current rate strategy focuses on seeking rate designs that reduce or eliminate regulatory lag and separate the recovery of our approved margins from customer usage patterns due to weather-related variability, declining use per customer and energy conservation, also known as decoupling. Additionally, we are seeking to stratify rates for low income households and to recover the gas cost portion of our bad debt expense.
 
Improving rate design is a long-term process. In the interim, we are addressing regulatory lag issues by directing discretionary capital spending to jurisdictions that permit us to recover our investment in a timely manner and filing rate cases on a more frequent basis to minimize the regulatory lag to keep our actual returns more closely aligned with our allowed returns.

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Approximately 97 percent of our utility revenues in the fiscal years ended September 30, 2006, 2005 and 2004 were derived from sales at rates set by or subject to approval by local or state authorities. Net annual revenue increases resulting from ratemaking activity totaling $39.0 million, $6.3 million and $16.2 million became effective in fiscal 2006, 2005 and 2004 as summarized below:
 
                                     
    Most Recent
          Increase (Decrease) to Revenue
 
    Effective
  Most Recent
      for the Year Ended September 30  
Division   Date   Rate Action   Jurisdiction   2006     2005     2004  
                (In thousands)  
 
Atmos Pipeline — Texas
  8/1/06   GRIP (1)   Texas   $ 5,205     $ 1,802     $  
Colorado-Kansas
  4/1/04   Show Cause   Colorado                 (1,900 )
    1/1/06   Ad Valorem Tax   Kansas     1,565              
    3/1/04   Rate Case   Kansas                 2,500  
Louisiana
  2/1/06   Stable Rate Filing (2)   LGS     3,326              
    10/1/04   Stable Rate Filing (2)   LGS           225        
Mid-States
  8/1/04   Rate Case   Virginia                 372  
    12/20/05   Rate Case   Georgia     409              
Mid-Tex
  2/1/06   GRIP (1)   Texas     25,313              
Mississippi
  (3)   Stable Rate Filing (2)   Mississippi           4,300       10,545  
    11/1/05   Rate Restructuring   Mississippi     (600 )            
West Texas
  12/1/05   GRIP (1)   Lubbock     1,263              
    3/1/04   Rate Case   Lubbock                 1,525  
    3/1/06   GRIP (1)   West Texas     2,539              
    5/1/04   Rate Case   West Texas                 3,200  
                                     
                $ 39,020     $ 6,327     $ 16,242  
                                     
 
 
(1) In 2003, the Texas Legislature approved the Gas Reliability Infrastructure Program (GRIP) which allows natural gas utilities the opportunity to include in their rate base annually approved capital costs incurred in the prior calendar year. Natural gas utilities that enter the program will be required to file a complete rate case at least once every five years.
 
(2) A stable rate filing is a regulatory mechanism designed to allow us to refresh our rates on a periodic basis without filing a formal rate case.
 
(3) The MPSC had formerly required that we file for rate adjustments every six months. Through May 2005, rate filings were made in May and November of each year and the rate adjustments typically became effective in June and December. See further discussion under the recent ratemaking activity for our Atmos Energy Mississippi Division below.
 
Additionally, the following ratemaking efforts were initiated during fiscal 2006 but had not been completed as of September 30, 2006:
 
                 
Division   Rate Action   Jurisdiction   Revenue Requested  
            (In thousands)  
 
Louisiana
  Stable Rate Filing (1)   LGS   $ 10,753  
Mid-States
  Rate Case   Missouri     3,396  
    Rate Proceeding (2)   Tennessee     3,400  
Mid-Tex
  System-wide Case   Texas     60,844  
                 
            $ 78,393  
                 
 
 
(1) The Louisiana Division has included the Rate Stabilization Clause increase in rates. The increase is subject to refund, pending final resolution of the Stable Rate Filing.
 
(2) The Tennessee rate proceeding was settled in October 2006. See below for information regarding the settlement.


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Our recent ratemaking activity is discussed in greater detail below.
 
Atmos Pipeline-Texas.   In April 2006, Atmos Pipeline — Texas made a filing under Texas’ Gas Reliability Infrastructure Program (GRIP) to include in rate base approximately $21.6 million of pipeline capital expenditures incurred during calendar year 2005, which should result in additional annual revenues of approximately $3.3 million. The RRC approved this filing in July 2006 and these new charges were included in the monthly customer charge beginning in August 2006.
 
In September 2005, Atmos Pipeline — Texas made a GRIP filing to include in rate base approximately $10.6 million of pipeline capital expenditures incurred during calendar year 2004, which resulted in approximately $1.9 million in additional annual revenue. In December 2004, Atmos Pipeline — Texas made a GRIP filing to include in rate base approximately $12.0 million of pipeline capital expenditures made by TXU Gas during calendar year 2003, which resulted in additional annual revenues of approximately $1.8 million.
 
Atmos Energy Colorado-Kansas Division.   In December 2005, the Colorado-Kansas Division filed its second annual ad valorem tax surcharge for $1.6 million. The surcharge is designed to collect Kansas property taxes in excess of the amount in the Colorado-Kansas Division’s most recent general rate case. We began to bill this surcharge in January 2006.
 
In July 2004, the Colorado Public Utility Commission ordered us to issue a one-time credit to our Colorado customers of $1.9 million. The agreement was a result of an inquiry by the Colorado Office of Consumer Counsel related to our earnings in Colorado. The staff of the Colorado Public Utility Commission was also a party to the agreement.
 
In May 2003, the Colorado-Kansas Division filed a rate case with the Kansas Corporation Commission for approximately $7.4 million in additional annual revenues. In January 2004, the Kansas Corporation Commission approved an agreement that allowed a $2.5 million increase in our rates effective March 2004. Additionally, the agreement allowed us to increase our monthly customer charges from $5 to $8, provided that we would not file another full rate application prior to September 2005. WNA became effective in Kansas in October 2003 in accordance with the Kansas Corporation Commission’s ruling in May 2003.
 
Atmos Energy Kentucky Division.   In February 2006, the KPSC approved the Company’s request to continue its Performance Based Ratemaking (PBR) mechanism for an additional five year period. The PBR establishes predetermined gas cost benchmarks and provides incentives to the Company for purchasing gas supply below those benchmark costs.
 
In February 2005, the Attorney General of the State of Kentucky filed a complaint with the Kentucky Public Service Commission (KPSC) alleging that our rates were producing revenues in excess of reasonable levels. We answered the complaint and filed a Motion to Dismiss with the KPSC. In February 2006, the KPSC issued an Order denying our Motion to Dismiss but stated that the Attorney General had not met his burden of proof concerning his complaint. In March 2006, the KPSC set a procedural schedule for the case. The Attorney General is currently conducting discovery. A hearing should be scheduled for early 2007. We believe that the Attorney General will not be able to demonstrate that our present rates are in excess of reasonable levels.
 
Atmos Energy Louisiana Division.   In September 2005, the Louisiana Public Service Commission (LPSC) consolidated several then-existing dockets. These dockets included a separate proceeding for the renewal of the Rate Stabilization Clause (RSC) for each of the LGS and TransLa Gas service areas; resolution of the outstanding 2003 RSC filing for the LGS service area; and our request for approval of a decoupling mechanism to stabilize margins in both the LGS and TransLa service areas.
 
On May 25, 2006, the LPSC voted to approve a settlement which included a modified WNA providing for partial decoupling, renewal of the RSC for both the LGS and TransLa service areas with provisions that will reduce regulatory lag and a refund to customers of approximately $0.4 million for the LGS service areas that previously had been deferred. The first RSC filing was in August 2006 for approximately $10.8 million, based on a test year ended December 31, 2005, for the LGS service area. The increase is subject to refund, pending final approval by the LPSC. The first filing for the TransLa service area will be made by


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December 31, 2006, for the test period ending September 30, 2006, with an effective rate adjustment of April 1, 2007. WNA for both service areas will be in effect for an initial three-year period beginning with the winter of 2006-2007. In the third quarter of fiscal 2006, $6.2 million in deferred revenue associated with the 2003 RSC rate adjustment was recognized.
 
On August 29, 2005, Hurricane Katrina struck the Gulf Coast, inflicting significant damage to our eastern Louisiana operations. The hardest hit areas in our service territory were in Jefferson, St. Tammany, St. Bernard and Plaquemines parishes. Although service has been restored for many of our customers, a significant number of customers will not require gas service for some time, if ever, because of sustained damages. We began implementing new rates, subject to refund, in September 2006 that reflected the reduction of approximately 26,500 customers and included a request to recover costs attributable to Hurricane Katrina. We cannot accurately determine what regulatory actions, if any, may be taken by the regulators with respect to this filing or our ability to fully recover all costs incurred as a result of the storm.
 
During the second quarter of 2005, the Louisiana Division implemented a rate increase of $3.3 million in its LGS service area. This increase resulted from our RSC filing in 2004 and was subject to refund, pending the final resolution of that filing. As the rate increase was subject to refund, we did not recognize the effects of this increase in our results of operations during fiscal 2005 or the first three quarters of fiscal 2006.
 
During fiscal 2004, the Louisiana Public Service Commission approved tariff revisions for our LGS service area totaling $0.2 million that became effective in October 2004.
 
In October 2002, Atmos received written notification from the Executive Secretary of the LPSC asserting that a monthly facilities fee of approximately $0.6 million charged since July 2001 to Atmos by Trans Louisiana Gas Pipeline, Inc., a wholly-owned subsidiary of Atmos, pursuant to a contract between the parties, was excessive. The Executive Secretary asserted that all monthly facilities fees in excess of approximately $0.1 million from July 2001 should be refunded to ratepayers with interest. In October 2003, the LPSC unanimously voted to approve an agreement to allow us to charge a facilities fee of approximately $0.5 million per month (subject to future escalation) beginning November 2003 for a period of 14 years. No retroactive adjustments were required under this agreement.
 
Atmos Energy Mid-States Division.   In April 2006, Atmos filed a rate case in its Missouri service area seeking a rate increase of $3.4 million. The Company is proposing to consolidate the rates for its Missouri properties into three sets of regional rates and consolidate the current purchased gas adjustment (PGA) into one statewide PGA. The Company is also proposing a WNA mechanism. An evidentiary hearing is scheduled to begin on November 27, 2006, with an order expected to be issued in February 2007.
 
In March 2006, we received notification from the Tennessee Regulatory Authority (TRA) that it disagreed with the way we calculated amounts under its performance-based rate mechanism, which resulted in a one-time $3.3 million income reduction during the second quarter of fiscal 2006. We believe the original calculations were correct and have appealed the TRA’s decision.
 
During the third quarter of fiscal 2005, Atmos filed a rate case in its Georgia service area seeking a rate increase of $4.0 million. In December 2005, the Georgia Public Service Commission (GPSC) approved a $0.4 million increase. In January 2006, we filed an appeal of the GPSC’s decision in the Superior Court of Fulton County. Oral arguments were held on September 7, 2006 before the Fulton County Superior Court. The court affirmed the commission’s order. We are considering further appeal.
 
In November 2005, we received a notice from the TRA that it was opening an investigation into allegations by the Consumer Advocate and Protection Division of the Tennessee Attorney General’s Office that we were overcharging customers in parts of Tennessee by approximately $10 million per year. We responded to numerous data requests from the TRA Staff. In April 2006, the TRA Staff filed a Report and Recommendation in which it recommended that the TRA convene a contested case procedure for the purpose of establishing a fair and reasonable return. The TRA convened to consider the Staff’s recommendation on May 15, 2006 and set a procedural schedule. A hearing was held from August 29, 2006 through August 31, 2006. Of the $10 million rate reduction requested by the Consumer Advocate and Protection Division, the TRA approved on October 27, 2006 a $6.1 million reduction to future rates.


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In February 2004, the Mid-States Division filed a rate case with the Virginia Corporation Commission (VCC) to request a $1.0 million increase in our base rates, WNA and recovery of the gas cost component of bad debt expense. The VCC granted a rate increase in November 2004 of $0.4 million that was retroactively effective to July 27, 2004. Additionally, the VCC authorized WNA beginning in July 2005 and the ability to recover the gas cost component of bad debt expense.
 
Atmos Energy Mid-Tex Division.   The following is a discussion of our recent ratemaking activity for our Mid-Tex Division.
 
Rate Case
 
During fiscal 2006, we received “show cause” resolutions from approximately 80 cities served by our Mid-Tex Division, including the City of Dallas, which require us to demonstrate that existing distribution rates in the Mid-Tex Division are just and reasonable. In May 2006, in response to these resolutions, we filed a Statement of Intent to increase rates on a division-wide basis. By agreement with the cities, the “show cause” resolutions were consolidated and became part of the Mid-Tex Division’s first rate case before the RRC since we acquired the TXU Gas operations in October 2004. In this rate proceeding, we are seeking incremental annual revenues in the Mid-Tex Division of approximately $60 million and several rate design changes, including WNA, revenue stabilization and recovery of the gas cost component of bad debt expense.
 
In exchange for an agreement to provide the intervening parties in the proceeding additional time to prepare for the hearing, we obtained agreement from the intervenors to implement WNA in the rates for the Mid-Tex Division for the 2006-2007 winter season, which has been approved by the RRC, and to implement WNA in the final rates in this proceeding. The hearing in this proceeding was concluded on November 17, 2006, and a decision is due from the RRC no later than April 2007. During the hearing, the principal issues raised by the cities included the Mid-Tex Division’s rate of return, the reduction of rate base for the accumulated deferred federal income taxes and investment tax credits associated with the TXU Gas operations prior to our acquisition, the methodology used by us to allocate certain shared services expenses to the division, and the inclusion of certain items in operation and maintenance expenses.
 
In addition, under applicable statutes, the RRC is reviewing the interim rate adjustments that were previously granted in response to the Mid-Tex Division’s prior GRIP filings and our acquisition of the TXU Gas operations for consistency with the public interest. Any increase that the RRC may grant in this case would be effective prospectively from the date of the final order. However, any decrease that may be ordered by the RRC would be effective from May 31, 2006 pursuant to the agreement with the intervenors for consolidation of the show cause resolutions and the Statement of Intent filing. Any disallowance related to the previously granted GRIP interim rate adjustments would be refunded to customers with interest beginning some time after the issuance of a final order in this proceeding.
 
While the decision of the RRC in this case cannot be predicted with certainty, we believe that we have adequately demonstrated to the RRC that the Mid-Tex Division is entitled to receive an increase in annual revenues and that the remaining rate design changes should be implemented.
 
GRIP Filings
 
In March 2006, the Mid-Tex Division made a GRIP filing to include in rate base approximately $62.2 million of distribution capital expenditures incurred during calendar year 2005, which we estimate would result in additional annual revenues of approximately $11.9 million. The RRC approved this filing in August 2006, and the new customer charges were implemented in September 2006 billings to customers.
 
In September 2005, the Mid-Tex Division made a GRIP filing to include in rate base approximately $29.4 million of distribution capital expenditures incurred during calendar year 2004, which currently provides additional annual revenues of approximately $6.7 million. The RRC approved this filing in January 2006, and these new charges were included in the monthly customer charge beginning in February 2006.
 
In December 2004, the Mid-Tex Division made a GRIP filing to include in rate base approximately $32.0 million of distribution capital expenditures made by TXU Gas during calendar year 2003, which


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currently provides additional annual revenues of approximately $6.7 million. New monthly customer charges were implemented in October 2005.
 
Other Regulatory Matters
 
In September 2006, the Mid-Tex Division filed its annual gas cost reconciliation with the RRC. The filing reflects approximately $24 million in refunds of amounts that were overcollected from customers between July 2005 and June 2006. The Mid-Tex Division has requested and received approval to refund these amounts over a six-month period beginning in November 2006.
 
In September 2004, the Mid-Tex Division filed its 36-Month Gas Contract Review with the RRC. This proceeding involves a review for reasonableness of gas purchases totaling $2.2 billion made by the Mid-Tex Division from November 2000 through October 2003. A hearing on this matter was held before the RRC in June 2005. The parties negotiated a unanimous settlement agreement providing for a refund of $8 million to customers over a three-year period and for reimbursement of parties’ expenses without recovery from customers. The RRC approved the settlement on September 12, 2006. Refunds to customers began in the first quarter of fiscal year 2007.
 
The Mid-Tex Division is also pursuing an appeal to the Travis County District Court of the Final Order in its last system-wide rate case completed in May 2004 to obtain a return of and on its investment associated with the Poly I replacement pipe that was originally disallowed in its rate case completed in May 2004. The case was argued before the Travis County District Court in July 2006. The Court ruled to uphold the Commission’s final order. Steps are being taken to perfect an appeal to the Court of Appeals in Travis County.
 
Atmos Energy Mississippi Division.   Through the first quarter of fiscal 2005, the MPSC required that we file for rate adjustments every six months. Rate filings were made in May and November of each year and the rate adjustments typically became effective in the following July and January.
 
During the second quarter of fiscal 2005, we agreed with the MPSC to suspend our May 2005 semi-annual filing to allow sufficient time for us and the MPSC to undertake a comprehensive review in an effort to improve our rate design and the ratemaking process. Effective October 2005, our rate design was modified to substitute the original agreed-upon benchmark with a sharing mechanism to allow the sharing of cost savings above an allowed return on equity level. Further, we moved from a semi-annual filing process to an annual filing process. Additionally, our WNA period begins on November 1 instead of November 15, and ends on April 30 instead of May 15. Also, we now have a fixed monthly customer base charge which makes a portion of our earnings less susceptible to usage. As part of the rate design restructuring, we agreed to reduce our rates by approximately $0.6 million. We made our first annual filing under this new structure in September 2006 requesting no change in rates.
 
In September 2004, the MPSC originally disallowed certain deferred costs totaling $2.8 million. In connection with the modification of our rate design described above, the MPSC decided to allow these costs, and we included these costs in our rates in October 2005.
 
In June 2006, the MPSC approved a pilot program whereby Trans Louisiana Gas Pipeline (TLGP) will provide asset management services to the Mississippi Division. The asset management program allows TLGP to market certain off-peak gas supply assets, such as company-owned or leased storage and pipeline capacity, on a recallable basis. In return, TLGP will share net positive benefits of the asset management program with Mississippi ratepayers. The pilot program runs from June 1, 2006 to April 30, 2007 and may be extended by the MPSC upon application by Atmos.
 
In October 2003, the MPSC issued a final order that denied our May 2003 request for a rate increase of $5.8 million. In January 2004, the MPSC authorized additional annual revenue of $5.9 million on our November 2003 filing, which became effective in December 2003. In September 2004, the MPSC authorized additional annualized revenue of $4.7 million on our May 2004 filing, which became effective in June 2004.
 
We filed our second semiannual filing for 2004 in November 2004, requesting rate adjustments of $6.0 million in annualized revenue. The MPSC allowed us to include $3.0 million in annualized revenue in


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our rates effective January 2005. In February 2005, we entered into an agreement with the Mississippi Public Utilities Staff that provides for an additional $1.3 million in annualized revenue that was retroactive to January 2005, which was approved by the MPSC during the second quarter of fiscal 2005.
 
Atmos Energy West Texas Division.   In September 2005, the West Texas Division made a GRIP filing to include in rate base approximately $22.6 million of distribution capital costs incurred during calendar year 2004, which should result in additional annual revenues of approximately $3.8 million. Of this amount, approximately $1.3 million related to our Lubbock jurisdiction and the remaining $2.5 million related to our West Texas jurisdiction. New charges for the filings were included in the monthly customer charge beginning May 2006. Atmos made its 2005 GRIP filings for the West Texas Division and the Lubbock Division in September 2006 requesting no change in rates.
 
In January 2006, the Lubbock, Texas City Council passed a resolution requiring Atmos to submit copies of all documentation necessary for the city to review the rates of Atmos’ West Texas Division to ensure they are just and reasonable. The requested information was provided to the city on February 28, 2006. We believe that we will be able to ultimately demonstrate to the City of Lubbock that our rates are just and reasonable.
 
In May 2006, Atmos began receiving “show cause” ordinances from several of the cities in the West Texas Division. We made a filing in response to the ordinances on October 2, 2006. We believe that we will be able to ultimately demonstrate to the West Texas cities that our rates are just and reasonable.
 
In October 2003, our West Texas Division filed a rate case in Lubbock requesting a $3.0 million increase in annual revenues and WNA for our residential, commercial and public-authority customers. The City of Lubbock approved a $1.5 million increase effective March 2004, as well as the proposed WNA.
 
In September 2003, our West Texas Division filed a rate case in its West Texas System to request a $7.7 million increase in annual revenues and WNA for its residential, commercial and public-authority customers. In May 2004, the 66 cities in its West Texas System approved an increase of $3.2 million in our annual utility revenues. The cities also approved a WNA rider for residential, commercial, public-authority and state-institution customers. This rider became effective in October 2004.
 
Other Regulation
 
Each of our utility divisions is regulated by various state or local public utility authorities. We are also subject to regulation by the United States Department of Transportation with respect to safety requirements in the operation and maintenance of our gas distribution facilities. Our distribution operations are also subject to various state and federal laws regulating environmental matters. From time to time we receive inquiries regarding various environmental matters. We believe that our properties and operations substantially comply with and are operated in substantial conformity with applicable safety and environmental statutes and regulations. There are no administrative or judicial proceedings arising under environmental quality statutes pending or known to be contemplated by governmental agencies which would have a material adverse effect on us or our operations. Our environmental claims have arisen primarily from former manufactured gas plant sites in Tennessee, Iowa and Missouri. These claims are fully described in Note 13 to the consolidated financial statements.
 
FERC allows, pursuant to Section 311 of the Natural Gas Policy Act, gas transportation services through our Atmos Pipeline — Texas assets “on behalf of” interstate pipelines or local distribution companies served by interstate pipelines, without subjecting these assets to the jurisdiction of the FERC.
 
Competition
 
Although our utility operations are not currently in significant direct competition with any other distributors of natural gas to residential and commercial customers within our service areas, we do compete with other natural gas suppliers and suppliers of alternative fuels for sales to industrial and agricultural customers. We compete in all aspects of our business with alternative energy sources, including, in particular, electricity. Electric utilities offer electricity as a rival energy source and compete for the space heating, water heating and cooking markets. Promotional incentives, improved equipment efficiencies and promotional rates all contribute to the acceptability of electrical equipment. The principal means to compete against alternative fuels is lower prices,


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and natural gas historically has maintained its price advantage in the residential, commercial and industrial markets. However, higher gas prices, coupled with the electric utilities’ marketing efforts, have increased competition for residential and commercial customers. In addition, our Natural Gas Marketing segment competes with other natural gas brokers in obtaining natural gas supplies for our customers.
 
Employees
 
At September 30, 2006, we had 4,632 employees, consisting of 4,402 employees in our utility segment and 230 employees in our other segments. See “Operating Statistics — Utility Sales and Statistical Data by Division” for the number of employees by division.
 
Available Information
 
Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other reports, and amendments to those reports, that we file with or furnish to the Securities and Exchange Commission (SEC) are available free of charge at our website, www.atmosenergy.com , as soon as reasonably practicable, after we electronically file these reports with, or furnish these reports to, the SEC. We will also provide copies of these reports free of charge upon request to Shareholder Relations at the address appearing below:
 
Shareholder Relations
Atmos Energy Corporation
P.O. Box 650205
Dallas, Texas 75265-0205
972-855-3729
 
Corporate Governance
 
In accordance with and pursuant to relevant provisions of the Sarbanes-Oxley Act of 2002, related rules and regulations of the Securities and Exchange Commission as well as corporate governance-related listing standards of the New York Stock Exchange, the Board of Directors of the Company has adopted the Company’s Corporate Governance Guidelines and revised the Company’s Code of Conduct, which is applicable to all directors, officers and employees of the Company. In addition, the Board of Directors has updated the charters for each of its Audit, Human Resources and Nominating and Corporate Governance Committees. All of the foregoing documents are posted on the Corporate Governance page of the Company’s website. We will also provide copies of such information free of charge upon request to Shareholder Relations at the address listed above.
 
ITEM 1A.    Risk Factors
 
Our financial and operating results are subject to a number of factors, many of which are not within our control. Although we have tried to discuss key risk factors below, please be aware that other risks may prove to be important in the future. These factors include the following:
 
We are subject to regulation by each state in which we operate that affect our operations and financial results.
 
Our natural gas utility business is subject to various regulated returns on its rate base in each of the 12 states in which we operate. We monitor the allowed rates of return and our effectiveness in earning such rates and initiate rate proceedings or operating changes as we believe are needed. In addition, in the normal course of the regulatory environment, assets may be placed in service and historical test periods established before rate cases that could adjust our returns can be filed. Once rate cases are filed, regulatory bodies have the authority to suspend implementation of the new rates while studying the cases. Because of this process, we must suffer the negative financial effects of having placed assets in service without the benefit of rate relief, which is commonly referred to as “regulatory lag”. In addition, rate cases involve a risk of rate reduction, and once rates have been approved, they are still subject to challenge for their reasonableness by appropriate


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regulatory authorities. Our debt and equity financings are also subject to approval by regulatory bodies in several states which could limit our ability to take advantage of favorable market conditions.
 
Our business could also be affected by deregulation initiatives, including the development of unbundling initiatives in the natural gas industry. Unbundling is the separation of the provision and pricing of local distribution gas services into discrete components. It typically focuses on the separation of the distribution and gas supply components and the resulting opening of the regulated components of sales services to alternative unregulated suppliers of those services. Although we believe that our enhanced technology and distribution system infrastructures have positively positioned us, we cannot provide assurance that there would be no significant adverse effect on our business should unbundling or further deregulation of the natural gas distribution service business occur.
 
Our operations are weather sensitive.
 
Our natural gas utility sales volumes and related revenues are correlated with heating requirements that result from cold winter weather. Although beginning in the 2006-2007 winter heating season, we will have weather-normalized rates for over 90 percent of our residential and commercial meters that should substantially eliminate the adverse effects of warmer-than-normal weather for meters in those service areas, our utility operating results will continue to vary with the temperatures during the winter heating season. In addition, sustained cold weather could adversely affect our natural gas marketing operations as we may be required to purchase gas at spot rates in a rising market to obtain sufficient volumes to fulfill some customer contracts.
 
The concentration of our distribution, pipeline and storage operations in the State of Texas have increased the exposure of our operations and financial results to adverse weather, economic conditions or regulatory decisions in Texas.
 
As a result of our acquisition of the distribution, pipeline and storage operations of TXU Gas in October 2004, over 50 percent of our natural gas distribution customers and most of our pipeline and storage assets and operations are now located in the State of Texas. This concentration of our business in Texas means that our operations and financial results are subject to greater impact than before from changes in the Texas economy in general as well as the weather in our service areas of the state during the winter heating season. Our financial results in fiscal 2006 were adversely affected by warm weather in Texas. In addition, the impact of any adverse rate or other regulatory decisions by state or local regulatory authorities in Texas will also be greater. The hearing in the Mid-Tex Division’s first rate case since the TXU Gas acquisition has just concluded. In the proceeding, we are seeking additional revenue and several rate design changes. A rate reduction or other significant, adverse decision by the Texas Railroad Commission in the proceeding could materially affect our financial results.
 
We are subject to environmental regulation which could adversely affect our operations or financial results.
 
We are subject to laws, regulations and other legal requirements enacted or adopted by federal, state and local governmental authorities relating to protection of the environment and health and safety matters, including those legal requirements that govern discharges of substances into the air and water, the management and disposal of hazardous substances and waste, the clean-up of contaminated sites, groundwater quality and availability, plant and wildlife protection, as well as work practices related to employee health and safety. Environmental legislation also requires that our facilities, sites and other properties associated with our operations be operated, maintained, abandoned and reclaimed to the satisfaction of applicable regulatory authorities. Failure to comply with these laws, regulations, permits and licenses may expose us to fines, penalties or interruptions in our operations that could be significant to our financial results. In addition, existing environmental regulations may be revised or our operations may become subject to new regulations. Such revised or new regulations could result in increased compliance costs or additional operating restrictions which could adversely affect our business, financial condition and results of operations.


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Our operations are exposed to market risks that are beyond our control which could adversely affect our financial results.
 
Our risk management operations are subject to market risks beyond our control including market liquidity, commodity price volatility and counterparty creditworthiness.
 
Although we maintain a risk management policy, we may not be able to completely offset the price risk associated with volatile gas prices or the risk in our natural gas marketing and pipeline and storage segments which could lead to volatility in our earnings. Physical trading also introduces price risk on any net open positions at the end of each trading day, as well as volatility resulting from intra-day fluctuations of gas prices and the potential for daily price movements between the time natural gas is purchased or sold for future delivery and the time the related purchase or sale is hedged. Although we manage our business to maintain no open positions, there are times when limited net open positions related to our physical storage may occur on a short-term basis. The determination of our net open position as of any day requires us to make assumptions as to future circumstances, including the use of gas by our customers in relation to our anticipated storage and market positions. Because the price risk associated with any net open position at the end of each day may increase if the assumptions are not realized, we review these assumptions as part of our daily monitoring activities. Net open positions may increase volatility in our financial condition or results of operations if market prices move in a significantly favorable or unfavorable manner because the timing of the recognition of profits or losses on the hedges for financial accounting purposes does not always match up with the timing of the economic profits or losses on the item being hedged. This volatility may occur with a resulting increase or decrease in earnings or losses, even though the expected profit margin is essentially unchanged from the date the transactions were consummated. Further, if the local physical markets in which we trade do not move consistently with the NYMEX futures market, we could experience increased volatility in the financial results of our natural gas marketing and pipeline and storage segments.
 
Our natural gas marketing and pipeline and storage segments manage margins and limit risk exposure on the sale of natural gas inventory or the offsetting fixed-price purchase or sale commitments for physical quantities of natural gas through the use of a variety of financial derivatives. However, contractual limitations could adversely affect our ability to withdraw gas from storage which could cause us to purchase gas at spot prices in a rising market to obtain sufficient volumes to fulfill customer contracts. We could also realize financial losses on our efforts to limit risk as a result of volatility in the market prices of the underlying commodities or if a counterparty fails to perform under a contract. In addition, adverse changes in the creditworthiness of our counterparties could limit the level of trading activities with these parties and increase the risk that these parties may not perform under a contract.
 
We are also subject to interest rate risk on our commercial paper borrowings and floating rate debt. In the past few years, we have been operating in a relatively low interest-rate environment with both short and long-term interest rates being relatively low compared to past interest rates. However, in the past two years, the Federal Reserve has taken actions that have resulted in increases in short-term interest rates. Future increases in interest rates could adversely affect our future financial results.
 
The execution of our business plan could be affected by an inability to access financial markets.
 
We rely upon access to both short-term and long-term capital markets to satisfy our liquidity requirements. Adverse changes in the economy or these markets, the overall health of the industries in which we operate and changes to our credit ratings could limit access to these markets, increase our cost of capital or restrict the execution of our business plan.
 
Our long-term debt is currently rated as “investment grade” by Standard & Poor’s Corporation (S&P), Moody’s Investors Services, Inc. (Moody’s) and Fitch Ratings, Ltd. (Fitch), the three credit rating agencies that rate our long-term debt securities. There can be no assurance that these rating agencies will maintain investment grade ratings for our long-term debt. If we were to lose our investment-grade rating, the commercial paper markets and the commodity derivatives markets could become unavailable to us. This would increase our borrowing costs for working capital and reduce the borrowing capacity of our gas marketing affiliate. In addition, if our commercial paper ratings were lowered, it would increase the cost of commercial


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paper financing and could reduce or eliminate our ability to access the commercial paper markets. If we are unable to issue commercial paper, we intend to borrow under our bank credit facilities to meet our working capital needs. This would increase the cost of our working capital financing.
 
Inflation and increased gas costs could adversely impact our customer base and customer collections and increase our level of indebtedness.
 
Inflation has caused increases in some of our operating expenses and has required assets to be replaced at higher costs. We have a process in place to continually review the adequacy of our utility gas rates in relation to the increasing cost of providing service and the inherent regulatory lag in adjusting those gas rates. Historically, we have been able to budget and control operating expenses and investments within the amounts authorized to be collected in rates and intend to continue to do so. However, the ability to control expenses is an important factor that could influence future results.
 
Rapid increases in the price of purchased gas, which occurred recently and in some prior years, cause us to experience a significant increase in short-term debt because we must pay suppliers for gas when it is purchased, which can be significantly in advance of when these costs may be recovered through the collection of monthly customer bills for gas delivered. Increases in purchased gas costs also slow our utility collection efforts as customers are more likely to delay the payment of their gas bills, leading to higher than normal accounts receivable. This could result in higher short-term debt levels, greater collection efforts and increased bad debt expense.
 
Our operations are subject to increased competition.
 
In the residential and commercial customer markets, our regulated utility operations compete with other energy products, such as electricity and propane. Our primary product competition is with electricity for heating, water heating and cooking. Increases in the price of natural gas could negatively impact our competitive position by decreasing the price benefits of natural gas to the consumer. This could adversely impact our business if as a result, our customer growth slows, resulting in reduced ability to make capital expenditures, or if our customers further conserve their use of gas, resulting in reduced gas purchases and customer billings.
 
In the case of industrial customers, such as manufacturing plants, and agricultural customers, adverse economic conditions, including higher gas costs, could cause these customers to use alternative sources of energy, such as electricity, or bypass our systems in favor of special competitive contracts with lower per-unit costs. Our pipeline and storage operations currently face limited competition from other existing intrastate pipelines and gas marketers seeking to provide or arrange transportation, storage and other services for customers. However, competition may increase if new intrastate pipelines are constructed near our existing facilities.
 
The cost of providing pension and postretirement health care benefits is subject to changes in pension fund values and changing demographics and may have a material adverse effect on our financial results.
 
We provide a cash-balance pension plan for the benefit of eligible full-time employees as well as postretirement health care benefits to eligible full-time employees. Our costs of providing such benefits is subject to changes in the market value of our pension fund assets, changing demographics, including longer life expectancy of beneficiaries and an expected increase in the number of eligible former employees over the next five to ten years, and various actuarial calculations and assumptions. The actuarial assumptions used may differ materially from actual results due to changing market and economic conditions, higher or lower withdrawal rates and other factors. These differences may result in a significant impact on the amount of pension expense or other postretirement benefit costs recorded in future periods.


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Our growth in the future may be limited by the nature of our business, which requires extensive capital spending.
 
We must continually build additional capacity in our natural gas distribution system to maintain the growth in the number of our customers. The cost of adding this capacity may be affected by a number of factors, including the general state of the economy and weather. Our cash flows from operations are generally not sufficient to supply funding for all our capital expenditures including the financing of the costs of this new construction along with capital expenditures necessary to maintain our existing natural gas system. As a result, we must fund at least a portion of these costs through borrowing funds from third party lenders, the cost of which is dependent on the interest rates at the time. This in turn may limit our ability to connect new customers to our system due to constraints on the amount of funds we can invest in our infrastructure.
 
Distributing and storing natural gas involve risks that may result in accidents and additional operating costs.
 
Our natural gas distribution business involves a number of hazards and operating risks that cannot be completely avoided, such as leaks, accidents and operational problems, which could cause loss of human life, as well as substantial financial losses resulting from property damage, damage to the environment and to our operations. We do have liability and property insurance coverage in place for many of these hazards and risks. However, because our pipeline, storage and distribution facilities are near or are in populated areas, any loss of human life or adverse financial results resulting from such events could be large. If these events were not fully covered by insurance, our financial position and results of operations could be adversely affected.
 
Natural disasters and terrorist activities and other actions could adversely affect our operations or financial results.
 
Natural disasters are always a threat to our assets and operations. In addition, the threat of terrorist activities could lead to increased economic instability and volatility in the price of natural gas that could affect our operations. Also, companies in our industry may face a heightened risk of exposure to actual acts of terrorism, which could subject our operations to increased risks. As a result, the availability of insurance covering such risks may be more limited, which could increase the risk that an event could adversely affect future financial results.
 
ITEM 1B.    Unresolved Staff Comments
 
Not applicable.
 
ITEM 2.    Properties
 
Distribution, transmission and related assets
 
At September 30, 2006, our utility segment owned an aggregate of 75,869 miles of underground distribution and transmission mains throughout our gas distribution systems. These mains are located on easements or rights-of-way which generally provide for perpetual use. We maintain our mains through a program of continuous inspection and repair and believe that our system of mains is in good condition. At September 30, 2006, our pipeline and storage segment owned 6,127 miles of gas transmission and gathering lines.
 
Our utility segment also holds franchises granted by the incorporated cities and towns that we serve. At September 30, 2006, we held 1,103 franchises having terms generally ranging from five to 35 years. A significant number of our franchises expire each year, which require renewal prior to the end of their terms. We believe that we will be able to renew our franchises as they expire.


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Storage Assets
 
Our utility and pipeline and storage segments own underground gas storage facilities in several states to supplement the supply of natural gas in periods of peak demand. The following table summarizes certain information regarding our underground gas storage facilities:
 
                                 
                      Maximum
 
                      Daily
 
          Cushion
    Total
    Delivery
 
    Usable Capacity
    Gas
    Capacity
    Capability
 
State   (Mcf)     (Mcf) (1)     (Mcf)     (Mcf)  
 
Utility Segment
                               
Kentucky
    4,442,696       6,322,283       10,764,979       109,100  
Kansas
    3,639,000       2,640,000       6,279,000       55,000  
Mississippi
    1,544,633       2,181,737       3,726,370       48,000  
Georgia
    450,000       50,000       500,000       30,000  
                                 
Total Utility Segment
    10,076,329       11,194,020       21,270,349       242,100  
                 
Pipeline and Storage Segment
                               
Texas
    39,128,475       13,128,025       52,256,500       1,235,000  
Kentucky
    3,492,900       3,295,000       6,787,900       71,000  
Louisiana
    438,583       300,973       739,556       56,000  
                                 
Total Pipeline and Storage Segment
    43,059,958       16,723,998       59,783,956       1,362,000  
                                 
Total
    53,136,287       27,918,018       81,054,305       1,604,100  
                                 
 
 
(1) Cushion gas represents the volume of gas that must be retained in a facility to maintain reservoir pressure.


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Additionally, we contract for storage service in underground storage facilities on many of the interstate pipelines serving us to supplement our proprietary storage capacity. The following table summarizes our contracted storage capacity:
 
<
                     
              Maximum
 
        Maximum
    Daily
 
        Storage
    Withdrawal
 
        Quantity
    Quantity
 
Division/Company   Contractor   (MMBtu)     (MMBtu) (1)  
 
Utility Segment
                   
Colorado-Kansas Division
  Southern Star Central Pipeline     2,719,101       82,397  
    Tenaska Marketing Ventures     1,000,000       10,400  
    Colorado Interstate Gas Company     422,142       12,985  
    Kinder Morgan, Inc.     67,500       1,500  
    Centerpoint Energy Gas Transmission     28,500       950  
Kentucky Division
  Texas Gas Transmission     3,841,150       41,060  
    Tennessee Gas Pipeline Company     1,313,538       22,698  
Louisiana Division
  Gulf South     1,978,020       98,901  
    Jefferson Island Storage & Hub     600,000       60,000  
    Acadian Natural Gas Company     33,276       2,234  
    Tennessee Gas Pipeline Company     18,776       329  
    Southern Natural Gas Company     12,945       261  
    Trunkline Gas Company     3,105       41  
Mid-States Division
  Atmos Energy Marketing     1,993,543       16,634  
    Southern Natural Gas Company     1,453,265       29,345  
    Panhandle Eastern Pipeline     1,035,462       15,721  
    Tennessee Gas Pipeline Company     835,674       20,000  
    Texas Eastern Transmission Company     753,969       11,303  
    Gallagher Drilling Company (2)     640,000       5,000  
    ANR Pipeline Company     629,480       11,200  
    Dominion     609,008       8,136  
    Transco     568,674       12,710  
    Virginia Gas Pipeline Company     380,000       23,000  
    East Tennessee     339,900       52,633  
    Natural Gas Pipeline Company     312,750       5,580  
    Texas Gas Transmission     239,576       7,495  
    CMS Trunkline Gas Company     220,455       2,940  
    MRT Energy Marketing