Exelon Corporation, incorporated in Pennsylvania in February 1999, is an energy supplier. It engages in power generation, wholesale and retail energy, and energy transmission.
Exelon is the largest nuclear power company in the United States, owning 10 power plants and generating 18,000 megawatts annually, accounting for 20% of U.S. nuclear power generation. Exelon was formed in 2000 through the merger of Unicom (Chicago) and Peco (Philadelphia). The new company's first step was to transition its power generation technology to nuclear power and immediately sell all of its coal-fired power plants. It now owns 17 nuclear power plants, making it the third-largest nuclear power company in the world.

Exelon is a public utility holding company and currently the largest nuclear power company in the United States. It owns 10 power plants and generates 18,000 megawatts annually, accounting for 20% of U.S. nuclear power generation. Its subsidiaries primarily engage in the generation, purchase, transmission, distribution, and sale of electricity to residential, commercial, industrial, and wholesale customers. They also distribute and sell natural gas to residential, commercial, and industrial customers.
Exelon Electric was formed in October 2000 through the merger of Philadelphia Electric and Unicom Corporation. Unicom's earliest predecessor was the Chicago Edison Company, which merged with Federal Electric in 1907 to become Federal Edison. Federal Edison subsequently merged several times to become Unicom.
Company Name: Exelon Corporation.
Official Domain Name: exeloncorp.com.
Domain Creation: December 23, 1997.
Country: United States.
Headquarters: Oak Brook, USA.
Founded: 1999.