Exhibit 21(a)
ENERGY FUTURE HOLDINGS CORP.
SUBSIDIARY HIERARCHY
Effective December 31, 2011
| Jurisdiction | ||
Energy Future Holdings Corp. | Texas | |
Energy Future Competitive Holdings Company | Texas | |
Texas Competitive Electric Holdings LLC | Delaware | |
TCEH Finance, Inc. | Delaware | |
Generation MT Company LLC | Delaware | |
EFH CG Holdings Company LP1 | Texas | |
Luminant Holding Company LLC | Delaware | |
Luminant Energy Company LLC | Texas | |
Luminant ET Services Company | Texas | |
Luminant Energy Trading California Company | Texas | |
EFH CG Holdings Company LP2 | Texas | |
EIP Holdings LLC3 | ||
Luminant Generation Company LLC | Texas | |
Nuclear Energy Future Holdings LLC | Delaware | |
Nuclear Energy Future Holdings II LLC | Delaware | |
Comanche Peak Nuclear Power Company LLC4 | Delaware | |
Valley NG Power Company LLC | Texas | |
Luminant Renewables Company LLC | Texas | |
Fuelco LLC5 | Delaware | |
EFH CG Holdings Company LP6 | Texas | |
Generation SVC Company | Texas | |
Big Brown 3 Power Company LLC | Texas | |
Big Brown Power Company LLC | Texas | |
Collin Power Company LLC | Delaware | |
DeCordova Power Company LLC | Texas | |
Lake Creek 3 Power Company LLC | Texas | |
Martin Lake 4 Power Company LLC | Texas | |
Monticello 4 Power Company LLC | Texas | |
Morgan Creek 7 Power Company LLC | Texas | |
Oak Grove Management Company LLC | Delaware | |
Oak Grove Power Company LLC | Texas | |
Sandow Power Company LLC | Texas | |
Tradinghouse 3 & 4 Power Company LLC | Texas | |
Tradinghouse Power Company LLC | Texas | |
Valley Power Company LLC | Texas | |
Big Brown Lignite Company LLC | Texas | |
Luminant Big Brown Mining Company LLC | Texas | |
Luminant Mining Company LLC | Texas | |
Oak Grove Mining Company LLC | Texas | |
Luminant Mineral Development Company LLC | Texas | |
NCA Resources Development Company LLC | Texas | |
TXU Energy Retail Company LLC | Texas | |
TXU Retail Services Company | Delaware | |
EFH CG Holdings Company LP7 | Texas | |
TXU SESCO Company LLC | Texas | |
TXU SESCO Energy Services Company | Texas | |
TXU Energy Solutions Company LLC | Texas | |
TXU SEM Company | Delaware | |
Pantellos Corporation8 | Delaware |
| Jurisdiction | ||
Brighten Holdings LLC | Delaware | |
Brighten Energy LLC | Delaware | |
Energy Future Intermediate Holding Company LLC | Delaware | |
EFIH Finance Inc. | Delaware | |
Oncor Electric Delivery Holdings Company LLC | Delaware | |
Oncor Electric Delivery Company LLC9 | Delaware | |
Oncor Management Investment LLC10 | Delaware | |
Oncor Electric Delivery Transition Bond Company LLC | Delaware | |
Oncor Electric Delivery Administration Corp. | Texas | |
EFH CG Holdings Company LP11 | Texas | |
Oncor License Holdings Company LLC | Texas | |
Oncor Communications Holdings Company LLC | Delaware | |
EFH Renewables Company LLC | Delaware | |
EFH Corporate Services Company | Texas | |
EFH CG Management Company LLC | Texas | |
EFH CG Holdings Company LP12 | Texas | |
Generation Development Company LLC | Delaware | |
NCA Development Company LLC | Texas | |
EFH Properties Company | Texas | |
Basic Resources Inc. | Texas | |
TXU Receivables Company | Delaware | |
EFH Vermont Insurance Company | Vermont | |
LSGT Gas Company LLC | Texas | |
LSGT SACROC, Inc. | Texas | |
Humphreys & Glasgow Limited | United Kingdom | |
EEC Holdings, Inc | Nevada | |
EECI, Inc. | Nevada | |
Ebasco Services of Canada, Ltd | Canada | |
EFH CG Holdings Company LP13 | Texas | |
EFH Australia (No. 2) Holdings Company | Delaware | |
EFH FS Holdings Company | Delaware | |
TXU Europe Limited | United Kingdom | |
TXU Europe CP Inc | Delaware | |
TXU Eastern Finance (A) Ltd | United Kingdom | |
TXU Eastern Finance (B) Ltd | United Kingdom | |
TXU Eastern Funding Company14 | United Kingdom | |
EFH Finance (No. 2) Holdings Company | Delaware | |
TXU Finance (No. 2) Limited15 | United Kingdom |
| 1 | 0.3% ownership interest |
| 2 | 22% ownership interest |
| 3 | 20% (2.5M) membership interest owned by Luminant Energy Company LLC |
| 4 | 88% ownership interest |
| 5 | 33.34% ownership interest |
| 6 | 2.4% ownership interest |
| 7 | 28.4% ownership interest |
| 8 | 5.389% owned by TXU Energy Solutions Company LLC |
| 9 | 80.033% ownership interest |
| 10 | Oncor Management Investment LLC owns 0.217% of Oncor Electric Delivery Company LLC. Regarding the ownership of Oncor Management Investment LLC, Oncor Electric Delivery Company LLC owns 100% of the Class A membership interests. Certain management employees of Oncor Electric Delivery Company LLC own 100% of the Class B membership interests. |
| 11 | 19.5% ownership interest |
| 12 | 21.5% ownership interest |
| 13 | 5.9% ownership interest |
| 14 | 50% owned by TXU Eastern Finance (A) Ltd and 50% owned by TXU Eastern Finance (B) Ltd |
| 15 | 10% owned by EFH Finance (No. 2) Holdings Company and 90% owned by TXU Europe Limited |