Luminant Mining Inactive POS AMProspectus update (post-effective amendment)

Filed: 27 Mar 12, 12:00am

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

We use cookies on this site to provide a more responsive and personalized service. Continuing to browse, clicking I Agree, or closing this banner indicates agreement. See our Cookie Policy for more information.