AEP, with more than 5 million American customers, is one of the country's largest investor-owned utilities, serving parts of 11 states. The service territory covers 197,500 square miles in Arkansas, Indiana, Kentucky, Louisiana, Michigan, Ohio, Oklahoma, Tennessee, Texas, Virginia and West Virginia.

To see if AEP serves a particular area, please enter its Zip Code:

AEP’s U.S. customers are served by one of the world’s largest transmission and distribution systems. Systemwide there are more than 38,000 circuit miles of transmission lines and more than 186,000 miles of distribution lines.

For details about the areas served, please see the Web sites of our regional utilities.

• AEP Ohio
• AEP Texas
• Appalachian Power
• Indiana Michigan Power
• Kentucky Power
• Public Service Company of Oklahoma
• Southwestern Electric Power Company