Kathleen Wolf Davis | Mar 03, 2015
American Electric Power (AEP) is one of the largest electric utilities in the U.S. It serves more than 5.3 million customers in 11 states. It also owns nearly 38,000 MW of generating capacity and owns the nation’s largest electricity transmission system, a more than 40,000-mile network that includes more 765-kilovolt extra-high voltage transmission lines than all other U.S. transmission systems combined.