Exhibit 21
TXU US HOLDINGS COMPANY
SUBSIDIARY HIERARCHY
Effective 12-31-02
State or Country
of Incorporation
TXU US Holdings Company Texas
Oncor Electric Delivery Company Texas
TXU Transition Bond Company LLC Delaware
TXU Electric Capital I Delaware
TXU Electric Capital II Delaware
TXU Electric Capital III Delaware
TXU Electric Capital IV Delaware
TXU Electric Capital V Delaware
TXU Electric Capital VI Delaware
TXU Electric Capital VII Delaware
TXU Electric Capital VIII Delaware
TXU Energy Holdings Company Texas
TXU Energy Company LLC (1) Delaware
TXU Energy Retail Management Company LLC Delaware
TXU Energy Retail Investment Company LLC Delaware
TXU Energy Retail Company LP Texas
TXU Energy Solutions Management Company LLC Delaware
TXU Energy Solutions Investment Company LLC Delaware
TXU Energy Solutions Company LP Texas
TXU Chilled Water Solutions Company Texas
TXU SEM Company Delaware
MyHomeKey.com, Inc. (2) Delaware
Pantellos Corporation (3) Delaware
TXU SESCO Company LLC Texas
TXU SESCO Energy Services Company Texas
TXU Energy Trading Management Company LLC Delaware
TXU Energy Trading Investment Company LLC Delaware
TXU Energy Trading Company LP Texas
TXU Energy Trading (California) Company Texas
TXU Energy Trading Canada Limited Canada
TXU Energy Trading (Canada) Company Texas
TXU Energy Gas Management Company Texas
TXU ET Services Company Texas
Energetica de Mexico, S.A. de C.V. (4) Mexico
Servicios de Energetica de Mexico, S.A. de C.V. (4) Mexico
TXU Mining Management Company LLC Delaware
TXU Mining Investment Company LLC Delaware
TXU Mining Company LP Texas
TXU Big Brown Mining Management Company LLC Delaware
TXU Big Brown Mining Investment Company LLC Delaware
TXU Big Brown Mining Company LP Texas
1
TXU Fuel Company Texas
TXU Generation Holdings Company Delaware
TXU Generation Management Company LLC Delaware
TXU Generation Investment Company LLC Delaware
TXU Generation Company LP Texas
TXU Big Brown Management Company LLC Delaware
TXU Big Brown Investment Company LLC Delaware
TXU Big Brown Company LP Texas
TXU Big Brown Lignite Management Company LLC Delaware
TXU Big Brown Lignite Investment Company LLC Delaware
TXU Big Brown Lignite Company LP Texas
TXU DeCordova Management Company LLC Delaware
TXU DeCordova Investment Company LLC Delaware
TXU DeCordova Company LP Texas
TXU Handley Management Company LLC Delaware
TXU Handley Investment Company LLC Delaware
TXU Handley Company LP Texas
TXU Mountain Creek Management Company LLC Delaware
TXU Mountain Creek Investment Company LLC Delaware
TXU Mountain Creek Company LP Texas
TXU Tradinghouse Management Company LLC Delaware
TXU Tradinghouse Investment Company LLC Delaware
TXU Tradinghouse Company LP Texas
TXU Generation Services Company Texas
TXU Pedricktown Management Company LLC Delaware
TXU Pedricktown Investment Company LLC Delaware
TXU Pedricktown Retail Company LLC Delaware
TXU Pedricktown Cogeneration Company LP Delaware
- ---------------------------
(1) 99% owned by TXU US Holdings Company, 1% owned by TXU Energy Holdings
Company
(2) 16.1% owned by TXU Energy Solutions Company LP
(3) 5.389% owned by TXU Energy Solutions Company LP
(4) Joint venture with Gas de France ("GDF"). In order for GDF to consolidate
its Mexico entities for tax purposes, GDF owns one more share than TXU
Energy Trading Company LP ("Trading") in each of the companies. The result
is they own 50% plus a small fraction of a percent more than Trading
Except as noted above, the voting stock of each subsidiary company and their
subsidiaries and affiliates is wholly owned (100%) by its parent or a
wholly-owned affiliate.