EXC

Exelon Corporation

One of America's largest utility holding companies, Exelon delivers electricity and natural gas through familiar regional brands like ComEd, PECO, BGE, and Pepco, serving homes and businesses across the mid-Atlantic and Illinois. It was born in 2000 when Chicago's Unicom, parent of Commonwealth Edison, merged with Philadelphia's PECO Energy, and the made-up name "Exelon" was coined to sound modern and energy-forward. In 2022 it spun off its nuclear power business into a separate company, Constellation Energy, keeping the regulated utilities for itself.