Document:

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                                                                EXHIBIT 10.20(c)

                                                       Service Package No: 27311
                                                                 Amendment No: 0

                          GAS TRANSPORTATION AGREEMENT

                       (For Use under FT-A Rate Schedule)

         THIS AGREEMENT is made and entered into as of the 1 day of November,
2000, by and between TENNESSEE GAS PIPELINE COMPANY, a Delaware Corporation,
hereinafter referred to as "Transporter" and UNITED CITIES GAS COMPANY, a
ILLINOIS Corporation, hereinafter referred to as "Shipper." Transporter and
Shipper shall collectively be referred to herein as the "Parties."

                             ARTICLE I - DEFINITIONS

1.1      TRANSPORTATION QUANTITY - shall mean the maximum daily quantity of gas
         which Transporter agrees to receive and transport on a firm basis,
         subject to Article II herein, for the account of Shipper hereunder on
         each day during each year during the term hereof, which shall be 73656
         dekatherms. Any limitations on the quantities to be received from each
         Point of Receipt and/or delivered to each Point of Delivery shall be as
         specified on Exhibit "A" attached hereto.

1.2      EQUIVALENT QUANTITY - shall be as defined in Article I of the General
         Terms and Conditions of Transporter's FERC Gas Tariff.

                           ARTICLE II - TRANSPORTATION

Transportation Service - Transporter agrees to accept and receive daily on a
firm basis, at the Point(s) of Receipt from Shipper or for Shipper's account
such quantity of gas as Shipper makes available up to the Transportation
Quantity, and to deliver to or for the account of Shipper to the Point(s) of
Delivery an Equivalent Quantity of gas.

                 ARTICLE III - POINT(S) OF RECEIPT AND DELIVERY

The Primary Point(s) of Receipt and Delivery shall be those points specified on
Exhibit "A" attached hereto.

                                   ARTICLE IV

All facilities are in place to render the service provided for in this
Agreement.

        ARTICLE V - QUALITY SPECIFICATIONS AND STANDARDS FOR MEASUREMENT

For all gas received, transported and delivered hereunder the Parties agree to
the Quality Specifications and Standards for Measurement as specified in the
General Terms and Conditions of Transporter's FERC Gas Tariff Volume No. 1. To
the extent that no new measurement facilities are installed to provide service
hereunder, measurement operations will continue in the manner in which they have
previously been handled. In the event that such facilities are not operated by
Transporter or a downstream pipeline, then responsibility for operations shall
be deemed to be Shipper's.

              ARTICLE VI - RATES AND CHARGES FOR GAS TRANSPORTATION

6.1      TRANSPORTATION RATES - Commencing upon the effective date hereof, the
         rates, charges, and surcharges to be paid by Shipper to Transporter for
         the transportation service provided herein shall be in accordance with
         transporter's Rate Schedule FT-A and the General Terms and Conditions
         of Transporter's FERC Gas Tariff. Except as provided to the contrary in
         any written or electronic agreement(s) between Transporter and Shipper
         in effect during the term of this Agreement, Shipper shall pay
         Transporter the applicable maximum

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         rate(s) and all other applicable charges and surcharges specified in
         the Summary of Rates in Transporter's FERC Gas Tariff and in this Rate
         Schedule. Transporter and Shipper may agree that a specific discounted
         rate will apply only to certain volumes under the agreement.
         Transporter and Shipper may agree that a specified discounted rate will
         apply only to specified volumes (MDQ, TQ, commodity volumes, Extended
         Receipt and Delivery Service Volumes or Authorized Overrun volumes)
         under the Agreement; that a specified discounted rate will apply only
         if specified volumes are achieved (with the maximum rates applicable to
         volumes above the specified volumes or to all volumes if the specified
         volumes are never achieved); that a specified discounted rate will
         apply only during specified periods of the year or over a specifically
         defined period of time; and/or that a specified discounted rate will
         apply only to specified points, zones, markets or other defined
         geographical area. Transporter and Shipper may agree to a specified
         discounted rate pursuant to the provisions of this Section 6.1 provided
         that the discounted rate is between the applicable maximum and minimum
         rates for this service.

6.2      INCIDENTAL CHARGES - Shipper agrees to reimburse Transporter for any
         filing or similar fees, which have not been previously paid for by
         Shipper, which Transporter incurs in rendering service hereunder.

6.3      CHANGES IN RATES AND CHARGES - Shipper agrees that Transporter shall
         have the unilateral right to file with the appropriate regulatory
         authority and make effective changes in (a) the rates and charges
         applicable to service pursuant to Transporter's Rate Schedule FT-A, (b)
         the rate schedule(s) pursuant to which service hereunder is rendered,
         or (c) any provision of the General Terms and Conditions applicable to
         those rate schedules. Transporter agrees that Shipper may protest or
         contest the aforementioned filings, or may seek authorization from duly
         constituted regulatory authorities for such adjustment of Transporter's
         existing FERC Gas Tariff as may be found necessary to assure
         Transporter just and reasonable rates.

                       ARTICLE VII - BILLINGS AND PAYMENTS

Transporter shall bill and Shipper shall pay all rates and charges in accordance
with Articles V and VI, respectively, of the General Terms and Conditions of the
FERC Gas Tariff.

                   ARTICLE VIII - GENERAL TERMS AND CONDITIONS

This Agreement shall be subject to the effective provisions of Transporter's
Rate Schedule FT-A and to the General Terms and Conditions incorporated therein,
as the same may be changed or superseded from time to time in accordance with
the rules and regulations of the FERC.

                             ARTICLE IX - REGULATION

9.1      This Agreement shall be subject to all applicable and lawful
         governmental statutes, orders, rules and regulations and is contingent
         upon the receipt and continuation of all necessary regulatory approvals
         or authorizations upon terms acceptable to Transporter. This Agreement
         shall be void and of no force and effect if any necessary regulatory
         approval is not so obtained or continued. All Parties hereto shall
         cooperate to obtain or continue all necessary approvals or
         authorizations, but no Party shall be liable to any other Party for
         failure to obtain or continue such approvals or authorizations.

9.2      The transportation service described herein shall be provided subject
         to Subpart G, Part 284 of the FERC Regulations.

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                ARTICLE X - RESPONSIBILITY DURING TRANSPORTATION

Except as herein specified, the responsibility for gas during transportation
shall be as stated in the General Terms and Conditions of Transporter's FERC Gas
Tariff Volume No. 1.

                             ARTICLE XI - WARRANTIES

11.1     In addition to the warranties set forth in Article IX of the General
         Terms and Conditions of Transporter's FERC Gas Tariff, Shipper warrants
         the following:

         (a)      Shipper warrants that all upstream and downstream
                  transportation arrangements are in place, or will be in place
                  as of the requested effective date of service, and that it has
                  advised the upstream and downstream transporters of the
                  receipt and delivery points under this Agreement and any
                  quantity limitations for each point as specified on Exhibit
                  "A" attached hereto. Shipper agrees to indemnify and hold
                  Transporter harmless for refusal to transport gas hereunder in
                  the event any upstream or downstream transporter fails to
                  receive or deliver gas as contemplated by this Agreement.

         (b)      Shipper agrees to indemnify and hold Transporter harmless from
                  all suits, actions, debts, accounts, damages, costs, losses
                  and expenses (including reasonable attorneys fees) arising
                  from or out of breach of any warranty by Shipper herein.

11.2     Transporter shall not be obligated to provide or continue service
         hereunder in the event of any breach of warranty.

                               ARTICLE XII - TERM

12.1     This contract shall be effective as of 1st day of November, 2000, and
         shall remain in force and effect, unless modified as per Exhibit B,
         until 31st day of October, 2005, ('Primary Term') and will terminate on
         that date.

12.2     Any portions of this Agreement necessary to resolve or cash out
         imbalances under this Agreement as required by the General Terms and
         Conditions of Transporter's Tariff shall survive the other parts of
         this Agreement until such time as such balancing has been accomplished;
         provided, however, that Transporter notifies Shipper of such imbalance
         not later than twelve months after the termination of this Agreement.

12.3     This Agreement will terminate automatically upon written notice from
         Transporter in the event Shipper fails to pay all of the amount of any
         bill for service rendered by Transporter hereunder in accord with the
         terms and conditions of Article VI of the General Terms and Conditions
         of Transporter's FERC Gas Tariff.

                              ARTICLE XIII - NOTICE

Except as otherwise provided in the General Terms and Conditions applicable to
this Agreement, any notice under this Agreement shall be in writing and mailed
to the post office address of the Party intended to receive the same, as
follows:

                   TRANSPORTER:     Tennessee Gas Pipeline Company
                                    P. O. Box 2511
                                    Houston, Texas  77252-2511
                                    Attention:  Director, Transportation Control

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                   SHIPPER:

                                    NOTICES:    UNITED CITIES GAS COMPANY
                                                5300 MARYLAND WAY
                                                BRENTWOOD, TN, USA-37027

                                                Attention: DIRECTOR - GAS SUPPLY

                                    BILLING:    UNITED CITIES GAS COMPANY
                                                5300 MARYLAND WAY
                                                BRENTWOOD, TN, USA-37027

                                                Attention: DIRECTOR - GAS SUPPLY

or to such other address as either Party shall designate by formal written
notice to the other.

                            ARTICLE XIV - ASSIGNMENTS

14.1     Either Party may assign or pledge this Agreement and all rights and
         obligations hereunder under the provisions of any mortgage, deed of
         trust, indenture, or other instrument which it has executed or may
         execute hereafter as security for indebtedness. Either Party may,
         without relieving itself of its obligation under this Agreement, assign
         any of its rights hereunder to a company with which it is affiliated.
         Otherwise, Shipper shall not assign this Agreement or any of its rights
         hereunder, except in accord with Article III, Section 11 of the General
         Terms and Conditions of Transporter's FERC Gas Tariff.

14.2     Any person which shall succeed by purchase, merger, or consolidation to
         the properties, substantially as an entirety, of either Party hereto
         shall be entitled to the rights and shall be subject to the obligations
         of its predecessor in interest under this Agreement.

                           ARTICLE XV - MISCELLANEOUS

15.1     THE INTERPRETATION AND PERFORMANCE OF THIS CONTRACT SHALL BE IN
         ACCORDANCE WITH AND CONTROLLED BY THE LAWS OF THE STATE OF TEXAS,
         WITHOUT REGARD TO THE DOCTRINES GOVERNING CHOICE OF LAW.

15.2     If any provision of this Agreement is declared null and void, or
         voidable, by a court of competent jurisdiction, then that provision
         will be considered severable at either Party's option; and if the
         severability option is exercised, the remaining provisions of the
         Agreement shall remain in full force and effect.

15.3     Unless otherwise expressly provided in this Agreement or Transporter's
         Gas Tariff, no modification of or supplement to the terms and
         provisions stated in this Agreement shall be or become effective until
         Shipper has submitted a request for change through the Electronic
         Bulletin Board and Shipper has been notified through the Electronic
         Bulletin Board of Transporter's agreement to such change.

15.4     Exhibit "A" attached hereto is incorporated herein by reference and
         made a part hereof for all purposes.

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         IN WITNESS WHEREOF, the Parties hereto have caused this Agreement to be
         duly executed as of the date first hereinabove written.

                           TENNESSEE GAS PIPELINE COMPANY

                           BY:   /s/ JAY DICKERSON
                                 ----------------------------
                                 Agent and Attorney-in-Fact

                           DATE: January 7, 1999
                                 ----------------------------

                           UNITED CITIES GAS COMPANY, a division
                           of ATMOS ENERGY CORPORATION

                           BY:   Gordon J. Roy
                                 ----------------------------

                           TITLE: Vice President
                                 ----------------------------

                           DATE: January 7, 1999
                                 ----------------------------<PAGE>   1
                                                                EXHIBIT 10.20(f)

                                                     SERVICE AGREEMENT NO. 59572
                                                   CONTROL NO. 1998-03-27 - 0016

                             FTS1 SERVICE AGREEMENT

THIS AGREEMENT, MADE AND ENTERED INTO THIS 27th day of MARCH 1998, BY AND
BETWEEN:

COLUMBIA GULF TRANSMISSION COMPANY
("TRANSPORTER")
AND
UNITED CITIES GAS COMPANY, A Division Of Atmos Energy Corporation
("SHIPPER")

WITNESSETH: THAT IN CONSIDERATION OF THE MUTUAL COVENANTS HEREIN CONTAINED, THE
PARTIES HERETO AGREE AS FOLLOWS:

Section 1. Service to be Rendered. Transporter shall perform and Shipper shall
receive the service in accordance with the provisions of the effective FTS-1
Rate Schedule and applicable General Terms and Conditions of Transporter's FERC
Gas Tariff, Second Revised Volume No. 1 (Tariff), on file with the Federal
Energy Regulatory Commission (Commission), as the same may be amended or
superseded in accordance with the rules and regulations of the Commission herein
contained. The maximum obligations of Transporter to deliver gas hereunder to or
for Shipper, the designation of the points of delivery at which Transporter
shall deliver or cause gas to be delivered to or for Shipper, and the points of
receipt at which the Shipper shall deliver or cause gas to be delivered, are
specified in Appendix A. as the same may be amended from time to time by
agreement between Shipper and Transporter, or in accordance with the rules and
regulations of the Commission. Service hereunder shall be provided subject to
the provisions of Part 284. 223 of Subpart G of the Commission's Regulations.
Shipper warrants that service hereunder is being provided on behalf of SHIPPER.

SECTION 2. TERM. SERVICE UNDER THIS AGREEMENT SHALL COMMENCE AS OF THE LATTER OF
NOVEMBER 01, 1998, OR UPON COMPLETION OF FACILITIES AND SHALL CONTINUE IN FULL
FORCE AND EFFECT UNTIL MARCH 31, 2005, SHIPPER AND TRANSPORTER AGREE TO AVAIL
THEMSELVES OF THE COMMISSION'S PRO-GRANTED ABANDONMENT AUTHORITY UPON
TERMINATION OF THIS AGREEMENT, SUBJECT TO ANY RIGHT OF FIRST REFUSAL SHIPPER MAY
HAVE UNDER THE COMMISSION'S REGULATIONS AND TRANSPORTER'S TARIFF.

SECTION 3. RATES. SHIPPER SHALL PAY THE CHARGES AND FURNISH RETAINAGE AS
DESCRIBED IN THE ABOVE-REFERENCED RATE SCHEDULE, UNLESS OTHERWISE AGREED TO BY
THE PARTIES IN WRITING AND SPECIFIED AS AN AMENDMENT TO THIS SERVICE AGREEMENT

SECTION 4. NOTICES. NOTICES TO TRANSPORTER UNDER THIS AGREEMENT SHALL BE
ADDRESSED TO IT AT POST OFFICE BOX 683, HOUSTON, TEXAS 77001. ATTENTION:
MANAGER-COMMERCIAL SERVICES AND NOTICES TO SHIPPER SHALL BE ADDRESSED TO IT AT

       UNITED CITIES GAS COMPANY
       GAS SUPPLY DEPARTMENT
       5300 MARYLAND WAY
       BRENTWOOD, TN     37027

 UNTIL CHANGED BY EITHER PARTY BY WRITTEN NOTICE.

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                                                     SERVICE AGREEMENT NO. 59572
                                                   CONTROL NO. 1998-03-27 - 0016

                             FTS1 SERVICE AGREEMENT

Section 5. Superseded Agreements: This Service Agreement supersedes and cancels,
as of the effective date hereof, the following Service Agreements: N/A

UNITED CITIES GAS COMPANY, A Division Of Atmos Energy Corporation

By: /s/ GORDON J. ROY
   -----------------------------
   Gordon J. Roy, Vice President

COLUMBIA GULF TRANSMISSION COMPANY

By: /s/ JAMES W. HART
   -----------------------------
   James W. Hart, Vice President

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