Exelon Corporation is an American energy company headquartered in Chicago, Illinois. The company is one of the largest electricity providers in the United States and focuses on electricity generation, distribution, and energy services.

Exelon is active in several segments of the energy industry, including nuclear power, renewable energy sources, and energy services for both industrial and residential customers. The company operates nuclear power plants, wind farms, and solar power plants, with an emphasis on sustainability and emission reduction.