| **CONFIDENTIAL** |   |   |
|------------------|--------|--------|

**CONFIDENTIAL      TREATMENT REQUESTED.**

**CONFIDENTIAL      PORTIONS OF THIS**

**DOCUMENT      HAVE BEEN REDACTED AND**

**HAVE      BEEN SEPARATELY FILED WITH THE**

**COMMISSION.**

***Confirmation***
***Party      A***
***Party      B***

***ISDA***
***2000      ISDA Definitions***
***Commodity      Definitions***
***Commodity      Transactions***

----

***ISDA      Form***
***Agreement***
***Other      Confirmation***
***Other      Transaction***
***Party      A Transactions***
***USD***

***Payor***
***Payee***
***Tax***
***Tax***

**1.**
**Transactions:**

***this      Transaction***

**2.**
**Collateral      Requirements:**

----

***Provision      Controlling.***

***Initial      Provision of Big Brown Collateral; Covenants (“Phase      I”)***

----

*provided*
***Opinions***
***Big      Brown Mortgage***

----

*provided*

***Group      Financing (“Phase II”)***

----

***Eagle      Date***
***Eagle      Letter***
***Eagle      Group First Lien Facilities***

** **

***TXU      Group***
***TXU      Alternative Group***
***Alternative      Group First Lien Facilities***

----

***Alternative      Intercreditor Agreement***
*provided,      however,*
*provided      however, further*

|   | (II) | a                reliance letter permitting Party A to rely on all opinions given                to the                administrative agent for the lenders in connection with the closing                of the                Alternative Group First Lien Facilities; and |
|--------|------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (III) | a                copy of a real property mortgage and fixture filing granting the                lien and                security interest referred to in clause (I) above together with copies                of                UCC-1 financing statements filed with the appropriate state and local                authorities perfecting the lien and security interest on personal                property                referred to in clause (I) above. |
|--------|-------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

* *

----

***Phase      II Allowed Hedge Capacity***

----

|   | (vii) | Novation                to Alternative Group Borrower.                In connection with the provision of a lien on Alternative Group                Collateral, Party B may assign and novate Party A Transactions to                the                Alternative Group Borrower in respect of the Alternative Group First                Lien                Facilities in respect of which the Alternative Group Collateral has                been                pledged. In the event Party B elects to novate Party A Transactions                to the                Alternative Group Borrower, Party A shall execute such documentation                as                may be necessary, or in the opinion of Party B, desirable to reflect                such                novation including an ISDA Master Agreement, Schedule and confirmation                with the Alternative Group Borrower that reflects the terms of this                Confirmation (and such novation shall only be effective upon the                execution                by both parties of such documentation). No payment shall be due to                or from                Party A or Party B in connection with such novation, except that                Party B                shall pay to (or receive from) the Alternative Group Borrower reasonably                equivalent value for the execution of such novation. In the event                that a                novation to the Alternative Group Borrower becomes effective, the                Guaranty                of TXU Energy Company LLC shall be deemed fully released and discharged,                and Party A agrees to execute such documentation as may be necessary,                or                in the opinion of Party B, desirable to reflect such                discharge. |
|--------|-------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

***Additional      Events of Default.***

***Definitions.***

***Affiliate***

----

***“Alternative***
***Group      Borrower”***

***Alternative      Group Collateral***

***Alternative      Group Collateral Permitted Liens***

***Alternative      Group First Lien Facilities***

***Big      Brown Company***

***Big      Brown Facility***

***Big      Brown Collateral***
*provided*

***Big      Brown Intercreditor Agreement***

***Big      Brown Permitted Liens***

| (a) | liens                created under the Big Brown                Mortgage; |
|-----|---------------------------------------------------------------------------|

| (b) | liens                for any tax, assessment or other governmental charge to the extent                not yet                delinquent or being contested or reserved against in accordance with                customary practice; |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c) | materialmen's,                mechanics', workers', repairmen's, employees' or other like liens,                arising                in the ordinary course of business; |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (d) | liens                arising out of judgments or awards so long as an appeal or proceeding                for                review is being prosecuted in good faith and for the payment of which                adequate reserves, bonds or other security have been provided or                are fully                covered by insurance; |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (e) | liens                consisting of encumbrances set forth and described on the applicable                schedules to the applicable title commitments and/or title policies                delivered pursuant to Section 2(b)(ii)(2) of this                Confirmation; |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (f) | other                liens incident to the ordinary course of                business; |
|-----|----------------------------------------------------------------------------------------|

| (g) | involuntary                liens (including, without limitation, a lien of an attachment, judgment                or                execution); |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------|

| (h) | additional                liens in favor of counterparties under power purchase agreements                or                commodity or hedging agreements subject to the aggregate Collateral                Percentage of all such persons, together with Party A, never exceeding                1.00 (*i.e.*,                100%); |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| (i) | liens                under purchase money loans or capital leases (to the extent such                liens                attach to Big Brown Collateral) or in respect of emissions allowances                in                an amount not to exceed $50,000,000 in the aggregate;                and |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (j) | second                priority or third priority liens that are subordinated to the first                priority liens; |
|-----|--------------------------------------------------------------------------------------------------------------------------|

*provided*

***Confidential      Information***

|   | (A) | the                terms of the Agreement, this Confirmation, this Transaction and any                Other                Transactions; |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------|

|   | (B) | the                content of any and all conversations, discussions or correspondence                to or                from the Providing Party regarding the above matters;                and |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (C) | any                other information which is marked by the Providing Party or its                representatives as “confidential” or “proprietary” or similar                appellation. |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (W) | Information                which was already in Receiving Party's possession prior to its receipt                from the Providing Party; |
|--------|-----|--------------------------------------------------------------------------------------------------------------------------------------------|

|   | (X) | Information                which is obtained by Receiving Party from a third person who, insofar                as                is known to Receiving Party, is not prohibited from transmitting                the                information by a contractual, legal or fiduciary obligation to the                Providing Party; and |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (Y) | Information                which is or becomes publicly available other than as a result of                disclosure by Receiving Party in violation of this                Agreement. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

***Collateral      Percentage***
*provided*

***Eagle      Date***

***Eagle      Group First Lien Facilities***

***Eagle      Letter***

***Environmental      Law***

----

***Exposure***

***Full      Hedge Amount***

***Hazardous      Materials***

***Incremental      Exposure***

***Pari      Passu***

**3.**
**Payment      Instructions:**

**4.**
**Additional      Terms and Conditions:**

***Jurisdiction***
***.***

***Waiver      of Jury Trial***
***.***

----

***Transfer      and Novation Rights***
***.***
***Assignee***
***Assignment      Effective Date***
***Transferred      Obligations***

***Financing      Consent***
***.***
***Consent***

----

***Commodity      Definitions***
***.***

***Confidentiality***
***.***
***Receiving      Party***
***Providing      Party***
*provided*

----

**5.**
**Non-reliance      Representations:**

***Non-Reliance***
***.***

***Assessment      and Understandin***
**g**
**.**

***Status      of Parties***
***.***

**6.**
**Representations      and Warranties:**

***Eligible      Swap Participant***
***Eligible      Contract Participant***
***CEA***

**7.**
**Additional      Representations:**

----

**8.**
**Limitation      of Liability:**

|   |   | Very                truly yours,                      |   |
|--------|--------|-------------------------------------------------------|--------|
|   |   |                                                  |   |
|   |   | TXU                Generation Development Company LLC |   |
|   |   |                                                  |   |
|   | By:    | /s/                Anthony Horton                     |   |
|   | Name:  | Anthony                Horton                         |   |
|   | Title: | Senior                Vice President & Treasurer  |   |
|   |   |                                                  |   |
|   |   |                                                  |   |

| ACCEPTED                AND AGREED |                   |   |
|------------------------------------|------------------------|--------|
|                               |                   |   |   |
| ***                                |                   |   |   |
|                               |                   |   |   |
| By:                                | /s/                *** |   |   |
| Name:                              | ***                    |   |   |
| Title:                             | ***                    |   |   |

----

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| Contract                Reference Number:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 23                Feb 2007                                                                                                                                                                                                                                                                                                                                                                                                             |
| Commodity                Type:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Nymex                Natural Gas - USD/MMbtu                                                                                                                                                                                                                                                                                                                                                                                           |
| Fixed                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price Payer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | TXU                Generation Development Company LLC                                                                                                                                                                                                                                                                                                                                                                                  |
| Start                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| End                Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Determination                Period(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 12                monthly period(s) with each Determination Period corresponding to                a                calendar month ("Reference Month"), beginning with the Start Date                and                ending on the End Date                                                                                                                                                                                         |
| Quantity                per Year:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Quantity                per Month:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                Quantity per Year divided by twelve (monthly periods in one year).                The                calculation will be rounded to the nearest MMbtu.                                                                                                                                                                                                                                                              |
| Fixed                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | ***                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Floating                Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | For                each Determination Period, the closing price on the last trading                day of                the applicable contract (“Pricing Day”) of the New York Mercantile                Exchange's (Nymex) Natural Gas Henry Hub Futures Contract for the                Reference Month stated in U.S. Dollars per MMbtu as made public by                the                Nymex on the Pricing Day. |
| If,                for any Determination Period, the Fixed Price exceeds the Floating                Price,                the Fixed Price Payer shall pay the Floating Price Payer an amount                equal                to the product of (x) the Fixed Price minus the Floating Price, and                (y)                the applicable Quantity per Month. If for any Determination Period,                the                Floating Price exceeds the Fixed Price, the Floating Price Payer                shall pay                the Fixed Price Payer an amount equal to the product of (x) the Floating                Price minus the Fixed Price, and (y) the applicable Quantity per                Month.                If, for any Determination Period, the Floating Price is equal to                the Fixed                Price, then no payment shall be owed by either party to the                other. |
| Settlement                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | The                day the Floating Price is published in each Determination                Period                                                                                                                                                                                                                                                                                                                                     |
| Payment                Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 5                New York Business Day(s) after each Settlement Date via wire transfer                of                Federal Funds                                                                                                                                                                                                                                                                                                  |

----

| **CONFIDENTIAL** |   |   |
|------------------|--------|--------|

| Re: | Transaction                Confirmation |
|-----|-----------------------------------------|

***Confirmation***
***Party      A***
***Party      B***
***Transaction***

***ISDA***
***2000      ISDA Definitions***
***Commodity      Definitions***
***Transactions***

----

***ISDA      Form***
***Agreement***
***Other***
***Confirmation***
***Other      Transaction***
***Party      A Transactions***
***USD***

***Payor***
***Payee***
***Tax***
***Tax***

**1.**
**Transactions:**

***Transaction***

**2.**

----

***Provision      Controlling.***

----

***TXU      Group Financing***

***TXU      Group***
***Group      First Lien Facilities***
***Intercreditor      Agreement***
***Aggregate      Net Settlement Amount***

----

***Determination      Date***

***Hedge      Compliant***

***Hedge      Non-Compliant***

----

**Hedge      Year**

***Allowed      Hedge Capacity***

***Hedges***

*“*
***Party      B Hedges***

***Additional      Events of Default.***

----

***Definitions***

***Affiliate***

***Confidential      Information***

|   | (A) | the                terms of the Agreement, this Confirmation, this Transaction, any                other                Transactions hereunder; |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (B) | the                content of any and all conversations, discussions or correspondence                to or                from the Providing Party regarding the above matters;                and |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (C) | any                other information which is marked by the Providing Party or its                representatives as “confidential” or “proprietary” or similar                appellation. |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (W) | Information                which was already in Receiving Party's possession prior to its receipt                from the Providing Party; |
|--------|-----|--------------------------------------------------------------------------------------------------------------------------------------------|

|   | (X) | Information                which is obtained by Receiving Party from a third person who, insofar                as                is known to Receiving Party, is not prohibited from transmitting                the                information by a contractual, legal or fiduciary obligation to the                Providing Party; and |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (Y) | Information                which is or becomes publicly available other than as a result of                disclosure by Receiving Party in violation of this                Agreement. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

***Eagle      Date***

***Group      Collateral***

***Group      Collateral Permitted Liens***

----

**4.**

----

***Receiving      Party***
***Providing      Party***
*provided*

**5.**

| (a) | *Non-Reliance*.                It is acting for its own account, and it has made its own independent                decisions to enter into that Transaction and as to whether that                Transaction is appropriate or proper for it is based upon its own                judgment                and upon advice from such advisors as it has deemed necessary. It                is not                relying on any communication (written or oral) of the other party                as                investment advice or as a recommendation to enter into that Transaction;                it being understood that information and explanations related to                the terms                and conditions of a Transaction shall not be considered investment                advice                or a recommendation to enter into that Transaction. No communication                (written or oral) received from the other party shall be deemed to                be an                assurance or guarantee as to the expected results of that                Transaction. |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b) | *Assessment                and Understanding*.                It is capable of assessing the merits of and understanding (on its                own                behalf or through independent professional advice), and understands                and                accepts, the terms, conditions and risks of that Transaction. It                is also                capable of assuming, and, assumes, the risks of that                Transaction. |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c) | *Status                of Parties*.                The other party is not acting as a fiduciary for or an adviser to                it in                respect of that Transaction. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

**6.**

***Eligible      Swap Participant***
***Eligible      Contract Participant***
***CEA***

----

**7.**

**8.**

|   |   | Very                truly yoursTXU                Energy Company LLC |   |
|--------|--------|----------------------------------------------------------------------|--------|
|   |   |                                                                 |   |
|   | By:    |                                                                 |   |
|   | Name:  |                                                                 |   |
|   | Title: |                                                                 |   |

| ACCEPTED                AND AGREED |   |   |
|------------------------------------|--------|--------|
|                               |   |   |   |
|                               |   |   |   |
|                               |   |   |   |
| By:                                |   |   |   |
| Name:                              |   |   |   |
| Title:                             |   |   |   |

----

**CREDIT      SUPPORT ANNEX**

**to      the Schedule to the ISDA Master Agreement**

**incorporated      by reference in the Long-Form Confirmation**

**dated      [____________], 2007**
**1**

| *********(“Party                A”)** | **and** | **TXU                ENERGY COMPANY LLC****(“Party                B”)** |
|---------------------------------------------------|---------|-------------------------------------------------------------------------------------|

**9.**
**.      The term “Obligations” as used in this Annex includes the following additional      obligations:**

**10.**

**Delivery      Amount, Return Amount and Credit Support Amount.**

**“Delivery      Amount”**

**“Return      Amount”**

**“Credit      Support Amount”**

----

**Eligible      Collateral.**

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | **Party                A** | **Valuation****Percentage** |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------|-----------------------------|
| (A) Cash                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | [X]                        | 100%                        |
| (B) negotiable                debt obligations having an original maturity at issuance of not more                than                one year (1) issued by the U.S. Treasury Department (“Treasury                Securities”), or (2) which are issued and/or guaranteed as to both                principal and interest by the Federal Home Loan Mortgage Corporation,                the                Federal National Mortgage Association, or the Government National                Mortgage                Association, including mortgage-backed securities and REMICs                (collectively, “Agency Securities”), but excluding interest only                securities, principal only securities and residual                interests. | [X]                        | 97%                         |
| (C) Treasury                Securities and Agency Securities having an original maturity at issuance                of more than one year but not more than 5 years                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | [X]                        | 95%                         |
| (D) Treasury                Securities and Agency Securities having an original maturity at issuance                of 5 years or more but not more than 10 years                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | [X]                        | 93%                         |
| (E) Treasury                Securities and Agency Securities having an original maturity at issuance                of 10 years or more                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | [X]                        | 90%                         |

**Other      Eligible Support.**

**Thresholds.**

**“Independent      Amount”**

**“Independent      Amount”**

**“Threshold”**

----

**“Threshold”**

**“Minimum      Transfer Amount”**

**Rounding.**

**“Valuation      Agent”:**

**“Valuation      Date”**

**“Valuation      Time”**

**“Notification      Time”**

**12.**
**      The following Termination Event(s) will be a “Specified Condition” for the party      specified (that party being the Affected Party if the Termination Event occurs      with respect to that party): With respect to Party A, all Termination      Events.**

**13.**

**“Substitution      Date”**

**Consent.**

**14.**

**“Resolution      Time”**

**“Value”.**

----

**“Alternative”.**

**Eligibility      to Hold Posted Collateral; Custodians.**

**Use      of Posted Collateral.**

**16.**

**Interest      Rate.**

**Transfer      of Interest Amount.**

**Alternative      to Interest Amount.**

**17.**

**18.**

**“Value”**

**“Transfer”**

----

**19.**

| With                respect to Party A: |     Tel:                Fax:                Email: |
|-----------------------------------------|------------------------------------------------------------------------|
|                                    |                                                                   |
| With                respect to Party B: | ________________________                                               |
|                                    | ________________________                                               |
|                                    | ________________________                                               |

**20.**

**21.**

**IN      WITNESS WHEREOF**

|   | *******                                   |
|--------|-------------------------------------------|
|   |                                      |
|   |                                      |
|   | By:_________________________________      |
|   | Name:                                     |
|   | Title:                                    |
|   |                                      |
|   | **TXU                ENERGY COMPANY LLC** |
|   |                                      |
|   |                                      |
|   |                                      |
|   | By:_________________________________      |
|   | Name:                                     |
|   | Title:                                    |

----

| 1  | For                    the avoidance of doubt, this Credit Support Annex Paragraph 13,                    together                    with a 1994 ISDA Credit Support Annex (New York law), shall be                    deemed to                    become effective simultaneously and automatically with the effectiveness                    of the Confirmation to which this Credit Support Annex Paragraph                    13 is                    attached. |
|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|