**TXU        CORP.**

**SUBSIDIARY        HIERARCHY**

**Effective        December 31, 2006**

|                                                          |   | **State                  or Country of Incorporation** |
|---------------------------------------------------------------|--------|--------------------------------------------------------|
| **TXU                  Corp.**                                |   | Texas                                                  |
| TXU                  US Holdings Company                      |   | Texas                                                  |
| TXU                  Fuel Company 1                           |   | Texas                                                  |
| TXU                  Energy Holdings Company                  |   | Texas                                                  |
| TXU                  Enterprise Holdings Company LLC          |   | Delaware                                               |
| TXU                  Collin Company LLC                       |   | Delaware                                               |
| TXU                  Valley Company LLC                       |   | Delaware                                               |
| NCA                  Resources Investment Company LLC         |   | Delaware                                               |
| TXU                  Mineral Development Company II LP 2      |   | Texas                                                  |
| NCA                  Resources Management Company LLC         |   | Delaware                                               |
| NCA                  Resources Development Company LP 3       |   | Texas                                                  |
| TXU                  Mining Services Company                  |   | Delaware                                               |
| TXU                  Power Services Company                   |   | Delaware                                               |
| TXU                  Retail Services Company                  |   | Delaware                                               |
| TXU                  Wholesale Services Company               |   | Delaware                                               |
| TXU                  Energy Company LLC 4                     |   | Delaware                                               |
| TXU                  Big Brown Management Company LLC         |   | Delaware                                               |
| TXU                  Big Brown Company LP 5                   |   | Texas                                                  |
| TXU                  Big Brown Lignite Management Company LLC |   | Delaware                                               |
| TXU                  Big Brown Lignite Company LP 6           |   | Texas                                                  |
| TXU                  DeCordova Management Company LLC         |   | Delaware                                               |
| TXU                  DeCordova Company LP 7                   |   | Texas                                                  |
| TXU                  Tradinghouse Management Company LLC      |   | Delaware                                               |
| TXU                  Tradinghouse Company LP 8                |   | Texas                                                  |
| TXU                  Generation Management Company LLC        |   | Delaware                                               |
| TXU                  Generation Company LP 9                  |   | Texas                                                  |
| Valley                  Power Company LLC                     |   | Texas                                                  |
| Fuelco                  LLC 10                                |   | Delaware                                               |
| TXU                  Renewables Investment Company LLC        |   | Delaware                                               |
| TXU                  Renewables Management Company LLC        |   | Delaware                                               |
| TXU                  Renewables Company LP 11                 |   | Texas                                                  |
| TXU                  Generation Services Company              |   | Texas                                                  |
| Oak                  Grove Management Company LLC             |   | Delaware                                               |
| TXU                  Energy Investment Company LLC            |   | Delaware                                               |
| TXU                  Energy Finance Company LLC               |   | Delaware                                               |
| TXU                  Mining Management Company LLC            |   | Delaware                                               |
| TXU                  Mining Company LP 12                     |   | Texas                                                  |
| TXU                  Big Brown Mining Management Company LLC  |   | Delaware                                               |
| TXU                  Big Brown Mining Company LP 13           |   | Texas                                                  |
| Oak                  Grove Mining Company LLC                 |   | Texas                                                  |
| Oak                  Grove Power Company LLC                  |   | Texas                                                  |
| Lake                  Creek 3 Power Company LLC               |   | Texas                                                  |
| Monticello                  4 Power Company LLC               |   | Texas                                                  |
| Martin                  Lake Power Company LLC                |   | Texas                                                  |
| Morgan                  Creek Power Company LL                |   | Texas                                                  |

----

| Big                  Brown 3 Power Company LLC                                |   | Texas    |
|-------------------------------------------------------------------------------|--------|----------|
| Tradinghouse                  3 & 4 Power Company LLC                     |   | Texas    |
| TXU                  SESCO Company LLC                                        |   | Texas    |
| TXU                  SESCO Energy Services Company                            |   | Texas    |
| TXU                  Energy Retail Management Company LLC                     |   | Delaware |
| TXU                  Energy Retail Company LP 14                              |   | Texas    |
| TXU                  Portfolio Optimization Company LLC                       |   | Delaware |
| TXU                  Portfolio Management Company LP 15                       |   | Texas    |
| TXU                  Energy Trading (California) Company                      |   | Texas    |
| TXU                  Energy Trading Canada Limited                            |   | Canada   |
| TXU                  ET Services Company                                      |   | Texas    |
| TXU                  Energy Solutions Investment Company LLC                  |   | Delaware |
| TXU                  Energy Solutions Management Company LLC                  |   | Delaware |
| TXU                  Energy Solutions Company LP 16                           |   | Texas    |
| TXU                  Chilled Water Solutions Company                          |   | Texas    |
| TXU                  SEM Company                                              |   | Delaware |
| Wichita/Victory                  Ave. LLC                                     |   | Texas    |
| NCA                  Development Company LLC                                  |   | Texas    |
| TXU                  Development Holdings Company                             |   | Delaware |
| TXU                  Generation Development Company II LLC                    |   | Delaware |
| Hazlebrook                  Generation Company LLC                            |   | Delaware |
| Shamokin                  Generation Company LLC                              |   | Delaware |
| TXU                  Mineral Investment Company I LLC                         |   | Delaware |
| TXU                  Mineral Management Company I LLC                         |   | Delaware |
| TXU                  Mineral Development Company I LP 17                      |   | Texas    |
| TXU                  Generation Development Company LLC                       |   | Delaware |
|     TXU                  Sandow Investment Company LLC    |   | Delaware |
|     TXU                  Sandow Management Company LLC    |   | Delaware |
|     TXU                  Sandow Development Company LP 18 |   | Texas    |
| TXU                  US Holdings Investment Company LLC 19                    |   | Delaware |
| TXU                  Electric Delivery Company                                |   | Texas    |
| TXU                  Electric Delivery Transition Bond Company LLC            |   | Delaware |
| TXU                  Electric Delivery Property Company LLC                   |   | Texas    |
| TXU                  Utility Services Management Company LLC                  |   | Delaware |
| TXU                  Utility Services LP 20                                   |   | Texas    |
| TXU                  Asset Services Company LLC                               |   | Delaware |
| TXU                  Asset Services Group Management Company LLC              |   | Delaware |
| TXU                  Asset Services Group Investment Company LLC              |   | Delaware |
| InfrastruX                  Energy Services Group LP 21                       |   | Delaware |
| InfrastruX                  Energy Services BPL LP 22                         |   | Delaware |
| InsfrastruX                  Energy Services Investment LLC                   |   | Delaware |
| InfrastruX                  Energy Services LP 23                             |   | Delaware |
| TXU                  Receivables Company                                      |   | Delaware |
| TXU                  Finance (No. 2) Holdings Company                         |   | Delaware |
| TXU                  Vermont Insurance Company                                |   | Vermont  |
| TXU                  Business Services Company                                |   | Texas    |
| TXU                  CG Management Company LLC                                |   | Texas    |
| TXU                  CG Holdings Company LP                                   |   | Texas    |
| TXU                  Industries Company LLC                                   |   | Delaware |
| TXU                  Properties Company                                       |   | Texas    |

----

| TXU                  Development Company                         |   | Texas                                 |
|------------------------------------------------------------------|--------|---------------------------------------|
| National                  Pipeline Company                       |   | Texas                                 |
| TXU                  Holdings Company                            |   | Delaware                              |
| Communications                  License Holdings I, Inc.         |   | Texas                                 |
| TXU                  Investment Company                          |   | Texas                                 |
| Pinnacle                  One GP, LLC 24                         |   | Delaware                              |
| Pinnacle                  One Partners, L.P. 25                  |   | Delaware                              |
| Pinnacle                  I, Inc.                                |   | Delaware                              |
| Basic                  Resources Inc.                            |   | Texas                                 |
| TXU                  Australia (No. 2) Holdings Company          |   | Delaware                              |
| Akard                  Street Holdings Company                   |   | Delaware                              |
| LSGT                  Investment Company LLC                     |   | Delaware                              |
| LSGT                  Management Company LLC                     |   | Texas                                 |
| LSGT                  Gas Company LP 26                          |   | Texas                                 |
| LSGT                  Processing Company                         |   | Delaware                              |
| Lone                  Star Energy Services, Inc.                 |   | Texas                                 |
| Oncor                  Utility Solutions (Texas) Company         |   | Texas                                 |
| Oncor                  Utility Solutions (North America) Company |   | Texas                                 |
| ENS                  Holdings I, Inc.                            |   | Texas                                 |
| ENS                  Holdings II, Inc.                           |   | Texas                                 |
| ENS                  Holdings Limited Partnership 27             |   | Texas                                 |
| LSGT                  SACROC, Inc. 28                            |   | Texas                                 |
| ECC                  Holdings, Inc                               |   | Nevada                                |
| Ebasco                  Services of Canada Limited               |   | Canada                                |
| EECI,                  Inc.                                      |   | Nevada                                |
| Enserch                  Finance N.V.                            |   | Netherlands                  Antilles |
| LSGT                  Finance (II), Inc.                         |   | Texas                                 |
| LSGT                  House, Inc.                                |   | Texas                                 |
| LSGT                  International Investments Limited          |   | Delaware                              |
| Humphreys                  & Glasgow Limited                 |   | United                  Kingdom       |
| Lavair                  Cogeneration Limited Partnership         |   | Delaware                              |
| PDH                  I Holding Company, Inc.                     |   | Texas                                 |

----

| 1  | 99.0%                    owned by TXU US Holdings Company, 1.0% owned by TXU Energy Holdings                    Company                                                                                                                                         |
|----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 2  | 99.5%                    owned by NCA Resources Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Enterprise Holdings Company LLC (general                    partner)                                       |
| 3  | 99.5%                    owned by NCA Resources Investment Company LLC (limited partner)                    and 0.5%                    owned by NCA Resources Management Company LLC (general                    partner)                                      |
| 4  | 99%                    owned by TXU US Holdings Company, 1% owned by TXU Energy Holdings                    Company                                                                                                                                             |
| 5  | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Big Brown Management Company LLC (general                    partner)                                         |
| 6  | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Big Brown Lignite Management Company LLC (general                    partner)                                 |
| 7  | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU DeCordova Management Company LLC (general                    partner)                                         |
| 8  | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Tradinghouse Management Company LLC (general                    partner)                                      |
| 9  | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Generation Management Company LLC (general                    partner)                                        |
| 10 | 92%                    membership interest owned by TXU Generation Company LP                                                                                                                                                                                   |
| 11 | 99.5%                    owned by TXU Renewables Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Renewables Management Company LLC (general                    partner)                                    |
| 12 | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Mining Management Company LLC (general                    partner)                                            |
| 13 | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Big Brown Mining Management Company LLC (general                    partner)                                  |
| 14 | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Energy Retail Management Company LLC (general                    partner)                                     |
| 15 | 99.5%                    owned by TXU Energy Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Portfolio Optimization Company LLC (general                    partner)                                       |
| 16 | 99.5%                    owned by TXU Energy Solutions Investment Company LLC (limited                    partner) and                    0.5% owned by TXU Energy Solutions Management Company LLC (general                    partner)                        |
| 17 | 99.5%                    owned by TXU Mineral Investment Company I LLC (limited partner)                    and 0.5%                    owned by TXU Mineral Management Company I LLC (general                    partner)                                      |
| 18 | 99.5%                    owned by TXU Sandow Investment Company LLC (limited partner)                    and 0.5%                    owned by TXU Sandow Management Company LLC (general                    partner)                                            |
| 19 | 100%                    ownership of Class B non-voting common stock of TXU US Holdings                    Company                                                                                                                                              |
| 20 | 99.5                    % owned by TXU Utility Services Management Group LLC (limited                    partner) and                    0.5% owned by TXU Corp (general partner)                                                                               |
| 21 | 49.75%                    owned by TXU Asset Services Group Investment Company LLC (a limited                    partner) and 0.25% owned by TXU Asset Services Group Management                    Company (a                    general partner)              |
| 22 | 99.5%                    owned by TXU Asset Services Group Investment Company LLC (limited                    partner)                    and 0.5% owned by TXU Asset Services Group Management Company                    (general                    partner) |
| 23 | 99.5%                    owned by InfrastruX Energy Investment LLC (limited partner) and                    0.5% owned                    by InfrastruX Energy Services Group LP (general                    partner)                                           |
| 24 | 90%                    owned by TXU Investment Company, 10% owned by TXU US Holdings                    Company                                                                                                                                                 |
| 25 | 99.5%                    owned by TXU Investment Company (limited partner), 0.5% owned                    by Pinnacle                    One GP, LLC (general partner)                                                                                          |
| 26 | 99.5%                    owned by LSGT Investment Company LLC (limited partner) and 0.5%                    owned by                    LSGT Management Company LLC (general partner)                                                                           |
| 27 | 1%                    owned by ENS Holdings I, Inc., 99% owned by ENS Holdings II,                    Inc.                                                                                                                                                      |
| 28 | .035%                    owned by ENS Holdings Limited Partnership, 99.65% owned by LSGT                    Finance                    (II), Inc.                                                                                                               |

|                                                     | **Affiliates** |                                                                                                          |
|----------------------------------------------------------|----------------|---------------------------------------------------------------------------------------------------------------|
|                                                     |           | **State                  or County****of                  Incorporation****or                  Organization** |
|                                                     |           |                                                                                                          |
| InfrastruX                  Energy Services Group LP (1) |           | Delaware                                                                                                      |
| ICMC                  Power Consortium Inc. (2)          |           | New                  York                                                                                     |
| EIP                  Holdings LLC (c)                    |           | Delaware                                                                                                      |
| Current                  Communications Group LLC (4)    |           | Delaware                                                                                                      |

| (1) | 0.25%                  general partnership interest owned by TXU Asset Services Group                  Management                  Company LLC, 49.75% limited partnership interest owned by TXU Asset                  Services Group Investment Company LLC. |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (2) | 12.93%                  owned by TXU Development Company.                                                                                                                                                                                                      |
| (3) | 20%                  (2.5M) membership interest owned by TXU Portfolio Management Company                  LP.                                                                                                                                                 |
| (4) | 25.874%                  membership interest owned by TXU Utility Services                  LP.                                                                                                                                                                |