Name of Company | Location of Incorporation |
| American Electric Power Service Corporation | New York |
| AEP Energy Supply LLC | Delaware |
| AEP Generation Resources Inc. | Delaware |
| AEP Generating Company | Ohio |
| AEP Transmission Holding Company, LLC | Delaware |
| AEP Transmission Company, LLC | Delaware |
| AEP Texas Inc. | Delaware |
| AEP Texas Central Transition Funding II LLC | Delaware |
| AEP Texas Central Transition Funding III LLC | Delaware |
| AEP Texas North Generation Company LLC | Delaware |
| AEP Texas Restoration Funding LLC | Delaware |
| Appalachian Power Company | Virginia |
| Appalachian Consumer Rate Relief Funding LLC | Delaware |
| Indiana Michigan Power Company | Indiana |
| Kentucky Power Company | Kentucky |
| Kingsport Power Company | Virginia |
| Ohio Power Company | Ohio |
| Ohio Phase-In-Recovery Funding LLC | Delaware |
| Ohio Valley Electric Corporation | Ohio |
| Indiana-Kentucky Electric Corporation | Indiana |
| Public Service Company of Oklahoma | Oklahoma |
| Southwestern Electric Power Company | Delaware |
| Wheeling Power Company | West Virginia |
