EXHIBIT 21
TEXAS UTILITIES COMPANY
(as of March 15, 1999)

State or Country
of Incorporation
TEXAS UTILITIES COMPANY Texas
TXU Capital I Delaware
Texas Utilities Electric Company Texas
TU Electric Capital I Delaware
TU Electric Capital II Delaware
TU Electric Capital III Delaware
TU Electric Capital IV Delaware
TU Electric Capital V Delaware
Texas Energy Industries, Inc. Texas
Southwestern Electric Service Company Texas
Texas Utilities Fuel Company Texas
Texas Utilities Mining Company Texas
Lufkin-Conroe Communications Co. Texas
Lufkin-Conroe Communications Services Co. Texas
LCT Long Distance, Inc. Texas
Lufkin-Conroe Telephone Exchange, Inc. Texas
Lufkin-Conroe Telecommunications Corp. Texas
East Texas Fiber Line Incorporated (1) Texas
Texas Utilities Integrated Solutions Inc. Texas
Texas Utilities Chilled Water Solutions Inc. Texas
Texas Utilities SEM, Inc.(2) Texas
Texas Utilities Services Inc. Texas
Texas Utilities Properties Inc. Texas
Texas Utilities Communications Inc. Delaware
Communications License Holdings I, Inc. Texas
Basic Resources Inc. Texas
Chaco Energy Company New Mexico
Enserch Development Corporation Texas
EDC Catskill Cogeneration, Inc. Delaware
EDC Four Inc. (3) Delaware
EDC Northwest Cogeneration, Inc. Delaware
EDC Palakkad Power Ltd. Cayman Islands
Enserch Power One Private Limited (4) Mauritius
Enserch Power Two Private Limited (4) Mauritius
EDC Power Marketing, Inc. Texas
EDC Shaoxing Power Ltd. Cayman Islands
Zhejiang Yong-Ke Thermal Power Corporation, Ltd. (5) China
EIL India, L.L.C. (6) Texas
Ensat Cogeneration Company Texas
Ensat Northwest Cogeneration Company (7) Texas
Electron Fees, Inc. Texas
Enserch Development Corporation Hamakua, Inc. Texas
Enserch Development Corporation Hawaii, Inc. Texas
Enserch International Ltd. Cayman Islands
National Pipeline Company Texas

Enserch de Mexico S.A. de C.V. (8) Mexico
Enserch de Monterrey S. A. de C. V. (9) Mexico
Enserch International Services, Inc. Texas

ENSERCH Corporation Texas
Lone Star Gas Company (an unincorporated division)
Lone Star Pipeline Company (an unincorporated division)
Enserch Processing, Inc. Delaware
Enserch Energy Services, Inc. Texas
Enserch Energy Services (Canada), Inc. Texas
Enserch Energy Services (New York), Inc. Delaware
Enserch Energy Services Risk Management Company Texas
Enserch Energy Services Trading Company Texas
Enserch Gas Marketing Company Texas
ALEASCO, Inc. Alaska
ENS Claims Management, Inc. Delaware
ENS Holdings I, Inc. Texas
ENS Holdings II, Inc. Texas
ENS Insurance Company Vermont
ENSERCH E&C Holdings, Inc. Nevada
ENS Equipment Corporation Delaware
ENSERCH E&C, Inc. Nevada
ESICORP Constructors International Inc. Delaware
ENS U. K. Limited (10) United Kingdom
ENS Limited (10) United Kingdom
Process Engineering International Ltd. (10) United Kingdom
ESICORP Industries Inc. (Delaware) Delaware
Ebasco Cayman Limited Cayman Islands
Ebasco Services Singapore Pte. Ltd. Singapore
Ebasco Energy A. G. Switzerland
Ebasco Services of Canada Limited Canada
Engineering International Liquidating Company, Inc. California
Ensat Pipeline Company Texas
ENSERCH Capital I Delaware
Enserch Finance II, Inc. Texas
Enserch Finance N.V. Netherlands Antilles
Enserch Gas Transmission Company Texas
Enserch House, Inc. Texas
Enserch International Investments Limited Delaware
Humphreys and Glasgow Limited United Kingdom
Enserch Receivables, Inc. Delaware
Enserch Shirley, Inc. Delaware
Fleet Star of Texas, L.C. (11) Texas
LS Energy, Inc. Texas
Lone Star Dallas Energy Center, Inc. Texas
Lone Star Energy Services, Inc. Texas
Lone Star Gas Company of Texas, Inc. Texas
TRANSTAR Technologies L.C. Texas

TU United Kingdom Holdings, Inc. Delaware
Lone Star Gas International, Inc. Texas
Lone Star Gas Chile S.A. de C.V. Republic of Chile
Servicio de Energia de Mexico, S.A. de C.V. (12) Mexico
Comercializadora Metrogas, S.A. de C.V. (13) Mexico
Administradora de Servicios de Energia de Mexico, S.A. de C.V. Mexico
TU International Holdings Ltd. (14) United Kingdom
TXU Eastern Holdings Limited United Kingdom
TU Finance (No. 2) Limited (15) United Kingdom
TU Acquisitions Limited United Kingdom
The Energy Group Limited United Kingdom
Eastern Group plc United Kingdom
Aspclear Limited United Kingdom
British Power International (Mexico) SA de CV Mexico
British Power International Limited United Kingdom
Capital Electricity Limited United Kingdom
Capital Power Limited United Kingdom
Compass Energy BV (16) The Netherlands
Dowlais Power Limited United Kingdom
Eastern (Kobbelv) Limited United Kingdom
Eastern (Svartisen) Limited United Kingdom
Eastern Corporate Insurance Limited Isle of Man
Eastern Data Collection Services Limited United Kingdom
Eastern Distribution Services Limited United Kingdom
Eastern Electrical Contracting Limited United Kingdom
Eastern Electricity Contracting Limited United Kingdom
Eastern Electricity Energy Traders Limited United Kingdom
Eastern Electricity Retail Limited United Kingdom
Eastern Electricity plc United Kingdom
Eastern Energy Brokers Limited United Kingdom
Eastern Energy Limited United Kingdom
Eastern Energy Management Limited United Kingdom
Eastern Energy Services Limited United Kingdom
Eastern Energy Sp. z o.o. Poland
Eastern Energy Trading Limited United Kingdom
Eastern Generation Limited United Kingdom
Anglian Power Generators Limited United Kingdom
BG Cogen Limited United Kingdom
Citigen (London) Limited United Kingdom
Drakmarn Staff Limited United Kingdom
Eastern Gas Generation Maintenance Limited United Kingdom
Eastern Generation Research Limited United Kingdom
Eastern Generation Services Limited United Kingdom
Eastern Merchant Generation Limited United Kingdom
Eastern Merchant Properties Limited United Kingdom
Eastern Renewable Generation Limited United Kingdom
Nedalo (UK) Limited (17) United Kingdom
Peterborough Power Limited United Kingdom

Shotton Combined Heat and Power Limited United Kingdom
Eastern Generation Poland Sp. z o.o. Poland
Eastern Group Finance Limited United Kingdom
Eastern Group Insurance Services Limited Isle of Man
Eastern Group Property Limited United Kingdom
Eastern Group Property Management Limited United Kingdom
Eastern Group Share Scheme Trustees Limited United Kingdom
Eastern IT Services Limited United Kingdom
Eastern Leasing (1) Limited United Kingdom
Eastern Leasing (2) Limited United Kingdom
Eastern Leasing (3) Limited United Kingdom
Eastern Leasing (4) Limited United Kingdom
Eastern Leasing (5) Limited United Kingdom
Eastern Limited United Kingdom
Eastern Marketing Company Limited United Kingdom
Eastern Metering Services Limited United Kingdom
Eastern Metering and Data Collection Limited United Kingdom
Eastern Natural Gas Limited United Kingdom
E Gas Limited United Kingdom
Eastern Gas Company Limited United Kingdom
Eastern Natural Gas (Retail) Limited United Kingdom
Eastern Pipelines Limited United Kingdom
Eastern Network Management Limited United Kingdom
Eastern Norge Kobbelv A.S. Norway
Eastern Norge Svartisen A.S. Norway
Eastern Overseas Finance Limited United Kingdom
Eastern Group European Investments Limited United Kingdom
Teplarny Brno A.S. (18) Czech Republic
Eastern PFS 1 Limited United Kingdom
Eastern PFS 2 Limited United Kingdom
Eastern PFS 3 Limited United Kingdom
Eastern PFS 4 Limited United Kingdom
Eastern PFS 5 Limited United Kingdom
Eastern PFS 6 Limited United Kingdom
Eastern PFS 7 Limited United Kingdom
Eastern PFS 8 Limited United Kingdom
Eastern Power Sp. z o.o Poland
Eastern Power and Energy Trading Limited United Kingdom
Eastern Natural Gas (Offshore) Limited United Kingdom
Eastern Natural Gas (Trading) Limited United Kingdom
Eastern Power and Energy Trading Poland Sp. zoo. Poland
Eastern Ten Limited United Kingdom
Eastern Private Network Management Limited United Kingdom
Eastern Systems and Services Limited United Kingdom
Eastern Thirty Limited United Kingdom
Eastern Twenty Eight Limited United Kingdom
Eastern Twenty Five Limited United Kingdom
Eastern Twenty Four Limited United Kingdom
5

Eastern Twenty Nine Limited United Kingdom
Eastern Twenty Seven Limited United Kingdom
Eastern Twenty Six Limited United Kingdom
Energy Optimisation Limited United Kingdom
F.W. Cook (Mechanical Services) Limited United Kingdom
Gwynedd Power Limited United Kingdom
Logicalform Limited United Kingdom
Lund Eastern Energi A.B. (19) Sweden
Offshore Oil and Gas Development Company Limited United Kingdom
Optima Gas Limited United Kingdom
Optima Power Limited United Kingdom
Shield Collection and Recovery Services Limited United Kingdom
Simple Heat Limited United Kingdom
Star Security (U.K.) Limited United Kingdom
Synergia Trading S.A. (20) Spain
The Energy Merchant Limited United Kingdom
Utility Contracting Services Limited United Kingdom
Utility Electrical Contracting Services Limited United Kingdom
Web Energy Limited Mauritius
Web Power Limited Mauritius
Zamosc Energy Company Sp. z o.o. (21) Poland
Energy Holdings (No. 2) Limited United Kingdom
Anglo-French Exploration Company Limited United Kingdom
CGF Investments Limited United Kingdom
Consolidated Gold Fields Limited United Kingdom
Energy Group International Limited (The) United Kingdom
Exploration Ventures Limited United Kingdom
Exven Limited (22) United Kingdom
Global Energy Finance LLC Delaware
Gold Fields Industrial Holdings Limited United Kingdom
Gold Fields Mining & Industrial Limited United Kingdom
Angbur Investment Trust Limited United Kingdom
Rose, Lloyd & Co. Limited (23) United Kingdom
Mining & Industrial Holdings Limited United Kingdom
Gold Fields Resources Limited (24) United Kingdom
Gold Fields Rhodesian Development Company Limited United Kingdom
Minven Minerals Limited (25) United Kingdom
New Consolidated Gold Fields Limited United Kingdom
Peabody Resources (UK) Limited United Kingdom
Gold Fields Industrial Limited United Kingdom
C. Tennant Leasing Limited United Kingdom
C. Tennant, Sons & Company Limited United Kingdom
Tennant Trading Limited United Kingdom
Tennant Security Limited United Kingdom
Gold Fields Mahd Adh Dhahab Limited United Kingdom
Interbronze Limited United Kingdom
Whitby Potash Limited United Kingdom
Energy Group Holdings B.V. Netherlands
6

Energy Group Overseas B.V. Netherlands
Energy Holdings (No. 3) Limited United Kingdom
Energy Holdings (No. 4) Limited United Kingdom
Energy Group Finance plc United Kingdom
Energy Nominees Limited United Kingdom
Rollalong (Overseas) Limited United Kindgom
Energy Resources Limited United Kingdom
Energy Holdings (No. 5) Limited United Kingdom
Energy Group (Far East) Limited (The) United Kingdom
Energy Group (North America) Limited (The) United Kingdom
Energy Group Finance Plc United Kingdom
Energy Holdings (No. 1) Limited United Kingdom
Major Insurance Company Limited Bermuda
Fonetake Limited United Kingdom
Hiketrial Limited United Kingdom
TEG (Head Office) Limited United Kingdom
Alliedhike Limited United Kingdom
Weber Futair (Development) Limited United Kingdom
Energy Trustees Limited United Kingdom
TXU Eastern Finance (A) Limited United Kingdom
TXU Eastern Funding Company (26) United Kingdom
TXU Eastern Finance (B) Limited United Kingdom
TU Australia Holdings No. 1 Limited United Kingdom
TU Australia Holdings No. 2 Limited United Kingdom
TU Australia Holdings (AGP) Pty Ltd Australia
TU Australia Holdings Limited Partnership Australia
TU Australia Holdings Pty Ltd Australia
Texas Utilities Australia Pty. Ltd. Australia
Eastern Energy Limited Australia
Australian Tree Management Pty. Ltd. Australia
Eastcoast Gas Pty. Ltd. (27) Australia
Eastcoast Power Pty. Ltd. Australia
Eastern Facilities Management Pty. Ltd Australia
Enetech Pty. Ltd. Australia
Global Customer Solutions Pty. Ltd. Australia
TUA (No. 1) Pty. Ltd. Australia
TUA (No. 2) Pty. Ltd. Australia
TUA (No. 3) Pty. Ltd. Australia
TUA (No. 4) Pty. Ltd. Australia
TUA (No. 5) Pty. Ltd. Australia
TUA (No. 6) Pty. Ltd. Australia
TU Australia (Queensland) Pty. Ltd. Australia
TUA (No. 7) Pty. Ltd. Australia
Western Underground Gas Storage Pty Ltd Australia
TUA (No. 8) Pty Ltd Australia
TUA (No. 9) Pty Ltd Australia
Kinetik Energy Pty Ltd Australia
Westar Pty Ltd Australia
7

TU Finance (No. 1) Holdings, Inc. Delaware
TU Finance (No. 2) Holdings, Inc. Delaware
<FN>
___________________________

(1) 67% owned by Lufkin-Conroe Telecommunications Corp.
(2) 85% owned by Texas Utilities Integrated Solutions Inc.
(3) 50% owned by Enserch Development Corporation.
(4) 99% owned by EDC Palakkad Power Ltd. and 1% owned by Enserch International Ltd.
(5) 70% owned by EDC Shaoxing Power Ltd.
(6) 40% owned by Enserch Development Corporation.
(7) 51% owned by Electron 4/NW, Inc. and 49% owned by Enserch Development Corporation.
(8) 99% owned by National Pipeline Company and 1% owned by Enserch Development
Corporation.
(9) 99.99% owned by Enserch de Mexico S.A. de C.V. and .01% owned by Enserch Development
Corporation.
(10) 99% owned by parent corporation.
(11) 50% owned by ENSERCH Corporation.
(12) 70% owned by Lone Star Gas International, Inc.
(13) 99.99% owned by Servicio de Energia de Mexico, S.A. de C.V. and 0.01% owned by Lone
Star Gas International, Inc.
(14) 85% owned by TU United Kingdom Holdings, Inc. and 15% owned by TU Finance (No. 1)
Holdings, Inc.
(15) 90% owned by TXU Eastern Holdings Limited and 10% owned by TU Finance (No. 2)
Holdings, Inc.
(16) 50% owned by Eastern Group plc.
(17) 75% owned by Eastern Generation Limited.
(18) 83.7% owned by Eastern Group European Investments Limited.
(19) 50% owned by Eastern Group plc.
(20) 50% owned by Eastern Group plc and 50% owned by Hidroelectrica del Cantabrico, S.A.
(21) 50% owned by Eastern Group plc.
(22) 70% owned by Energy Holdings (No. 2) Limited.
(23) 50% owned by Angbur Investment Trust Limited and 50% owned by Gold Fields Mining &
Industrial Limited.
(24) 80% owned by Energy Holdings (No. 2) Limited and 20% owned by Peabody Resources (UK)
Limited.
(25) 70% owned by Energy Holdings (No. 2) Limited.
(26) 50% owned by TXU Eastern Finance (A) Limited and 50% owned by TXU Eastern Finance
(B) Limited.
(27) 50% owned by Eastern Energy Limited.
</FN>

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.
9

Affiliates

State or County
of Incorporation
or Organization

American Gas Finance Company, L.L.C. (1) Texas
Enserch SACROC Inc. (2) Texas
ENS Holdings Limited Partnership (3 ) Texas
FinaStar Partnership (4) Texas
Lavair Cogeneration Limited Partnership (5) Delaware
Gulf Coast Natural Gas Company (6) Texas
Encogen Hawaii, L.P. (7) Hawaii
Encogen Northwest L.P. (8) Delaware
Encogen Four Partners L.P. (9) Delaware
GTE Mobilnet of South Texas, L.P. (10) Texas
GTE Mobilnet of Texas RSA #11, L.P. (11) Texas
GTE Mobilnet of Texas RSA #17, L.P. (12) Texas
Texas RSA #11B Limited Partnership (13) Texas
Compania Mexicana de Gas S.A. de C.V. (14) Mexico
Gas Automotores, S.A. de C.V. (15) Mexico
Gas Natural de Apodaca, S.A. de C.V. (15) Mexico
Gas Natural de Santa Cantarina, S.A. de C.V. (15) Mexico
Metrogas S.A. (16) Republic of Chile
ICMC Power Consortium, Inc. (17) New York
ESN Holdings Limited (18) United Kingdom
Electralink Limited (19) United Kingdom
Non-Fossil Purchasing Agency Limited (20) United Kingdom
Electricity Association Limited (21) United Kingdom
Electricity Pension Trustees Limited (22) United Kingdom
UK Data Collection Services Limited (23) United Kingdom
Barking Power Limited (24) United Kingdom
Severomoravska Energetika (25) Czech Republic
Hidroelectrica del Cantabrico, S.A. (26) Spain
Gasmart (27) Australia
<FN>
________________________

(1) 5.27% owned by Lone Star Energy Services, Inc.
(2) 99.65% owned by Enserch Finance II, Inc. and 0.35% owned by ENS Holdings Limited
Partnership.
(3) Limited Partnership: ENS Holdings II, Inc. (99%) and ENS Holdings I, Inc. (1%).
(4) General Partnership: ENSERCH Corporation (50%).
(5) Limited Partnership EDC Catskill Cogeneration, Inc. (56.67%) and ENSERCH Corporation
(43.33%).
(6) General partnership: General Partner, Enserch Gas Transmission Company (50%).
(7) Limited Partnership: Enserch Development Corporation (50%).
(8) Limited Partnership: Ensat Northwest Cogeneration Company (99%) and EDC Northwest
Cogeneration, Inc. (1%).
(9) Limited Partnership: EDC Four, Inc. (1%).
(10) Limited Partnership: Lufkin-Conroe Telecommunications Corp. (2.34%).
(11) Limited Partnership: Lufkin-Conroe Telecommunications Corp. (18%).
(12) Limited Partnership: Lufkin-Conroe Telecommunications Corp. (17%).
(13) Limited Partnership: Lufkin-Conroe Telecommunications Corp. (18%).
(14) 49% owned by Enserch de Monterrey S.A. de C.V.
(15) 99% owned by Compania Mexicana de Gas S.A. de C.V.
(16) 10% owned by Lone Star Gas Chile S.A. de C.V.
(17) 12.93% owned by Enserch Development Corporation.
(18) 6.97% owned by Eastern Electricity plc.
(19) 9.77% owned by Eastern Electricity plc.
(20) 8.3% owned by Eastern Electricity plc.
(21) 3.88% owned by Eastern Electricity plc.
(22) 5.99% owned by Eastern Electricity plc.
(23) 7.8% owned by Eastern Electricity plc.
(24) 13.5% owned by Eastern Generation Limited.
(25) 16.3% owned by Eastern Group European Investments Limited.
(26) 5% owned by Eastern Group plc.
(27) 33% owned by Westar Pty Ltd.
</FN>