EXHIBIT 21
Subsidiaries of
American Electric Power Company, Inc.
As of December 31, 2006
The voting stock of each company shown indented is owned by the company immediately above which is not indented to the same degree. Subsidiaries not indented are directly owned by American Electric Power Company, Inc.
Name of Company | Location of Incorporation | Percentage of Voting Securities Owned by Immediate Parent | |
American Electric Power Company, Inc. | New York | ||
American Electric Power Service Corporation | New York | 100.0 | |
AEP C&I Company, LLC | Delaware | 100.0 | |
AEP Coal, Inc. | Nevada | 100.0 | |
AEP Communications, Inc. | Ohio | 100.0 | |
AEP Desert Sky LP, LLC | Delaware | 100.0 | |
AEP Desert Sky LP II, LLC | Delaware | 100.0 | |
AEP Generating Company | Ohio | 100.0 | |
AEP Investments, Inc. | Ohio | 100.0 | |
AEP Nonutility Funding LLC | Delaware | 100.0 | |
AEP Power Marketing, Inc. | Ohio | 100.0 | |
AEP Pro Serv, Inc. | Ohio | 100.0 | |
AEP Resources, Inc. | Ohio | 100.0 | |
AEP T&D Services, LLC | Delaware | 100.0 | |
AEP Transmission Holding Company, LLC | Delaware | 100.0 | |
AEP Utilities, Inc. | Delaware | 100.0 | |
AEP Credit, Inc. | Delaware | 100.0 | |
AEP Texas Central Company | Texas | 100.0 | |
AEP Texas Central Transition Funding LLC | Delaware | 100.0 | |
AEP Texas Central Transition Funding II LLC | Delaware | 100.0 | |
AEP Texas North Company | Texas | 100.0 | |
AEP Texas North Generation Company LLC | Delaware | 100.0 | |
CSW Energy, Inc. | Texas | 100.0 | |
CSW Energy Services, Inc. | Delaware | 100.0 | |
CSW International, Inc. | Delaware | 100.0 | |
Public Service Company of Oklahoma | Oklahoma | 100.0 | |
Southwestern Electric Power Company | Delaware | 100.0 | |
Dolet Hills Lignite Company, LLC | Delaware | 100.0 | |
Southwestern Arkansas Utilities Corporation | Arkansas | 100.0 | |
SWEPCo Capital Trust I | Delaware | 100.0 | |
The Arklahoma Corporation | Arkansas | 47.6 | (a) |
AEP Utility Funding LLC | Delaware | 100.0 | |
Appalachian Power Company | Virginia | 98.7 | (b) |
Cedar Coal Co. | West Virginia | 100.0 | |
Central Appalachian Coal Company | West Virginia | 100.0 | |
Central Coal Company | West Virginia | 50.0 | (c) |
Southern Appalachian Coal Company | West Virginia | 100.0 | |
Columbus Southern Power Company | Ohio | 100.0 | |
Colomet, Inc. | Ohio | 100.0 | |
Conesville Coal Preparation Company | Ohio | 100.0 | |
Ohio Valley Electric Corporation | Ohio | 4.3 | (d) |
Indiana-Kentucky Electric Corporation | Indiana | 100.0 | |
Simco Inc. | Ohio | 100.0 | |
Franklin Real Estate Company | Pennsylvania | 100.0 | |
Indiana Michigan Power Company | Indiana | 100.0 | |
Blackhawk Coal Company | Utah | 100.0 | |
Price River Coal Company | Indiana | 100.0 | |
Kentucky Power Company | Kentucky | 100.0 | |
Kingsport Power Company | Virginia | 100.0 | |
Mutual Energy L.L.C. | Delaware | 100.0 | |
Ohio Power Company | Ohio | 99.4 | (e) |
Cardinal Operating Company | Ohio | 50.0 | (f) |
Central Coal Company | West Virginia | 50.0 | (c) |
Ohio Valley Electric Corporation | Ohio | 39.2 | (d) |
Indiana-Kentucky Electric Corporation | Indiana | 100.0 | |
Power Tree Carbon Company, LLC | Delaware | 9.2 | (g) |
Wheeling Power Company | West Virginia | 100.0 |
NOTES:
(a) | Southwestern Electric Power Company owns 47.6% of the Common Stock; the other 52.4% is owned by nonaffiliated companies. |
(b) | 13,499,500 shares of Common Stock, all owned by parent, have one vote each and 177,634 shares of Preferred Stock, all owned by the public, have one vote each. |
(c) | Owned 50% by Appalachian Power Company and 50% by Ohio Power Company. |
(d) | American Electric Power Company, Inc. and Columbus Southern Power Company own 39.2% and 4.3% of the stock, respectively, and the remaining 56.5% is owned by nonaffiliated companies. |
(e) | 27,952,473 shares of Common Stock, all owned by parent, have one vote each and 166,304 shares of Preferred Stock, all owned by the public, have one vote each. |
(f) | Ohio Power Company owns 50% of the Common Stock; the other 50% is owned by a nonaffiliated company. |
(g) | The remaining 90.8% is owned by 25 leading United States power companies including 11 other registered holding companies. |