Calvin Butler has begun in his role as chief executive officer of Exelon and has joined Exelon's Board of Directors after previously serving as the company's president and chief operating officer. Butler has served as COO since October 2021 and was named president and COO in October 2022. He previously served as Exelon Utilities CEO since 2019 and as CEO of Baltimore Gas and Electric (BGE) from 2014 to 2019.

Prior to that role, Butler served as BGE's senior vice president for Regulatory and External Affairs. In addition, he has held various leadership positions at ComEd, including as senior vice president of Corporate Affairs and vice president of Governmental and Legislative Affairs. Before joining Exelon in 2008, he held senior leadership roles in external affairs as well as in manufacturing with the print, digital and supply chain solutions company R.R. Donnelley.

Butler spent his early career with Central Illinois Light Company (CILCORP Inc.), where he worked in government affairs, legal and strategy. In addition to serving on the Exelon Board, Butler also serves as chair of each Exelon operating company board — BGE, ComEd, PECO and PHI. He is the vice chair of the Institute of International Education (IIE) and also serves on the board of RLI Corp.

He will be a new member of the Civic Committee of the Commercial Club of Chicago. He also serves on several nonprofit boards in areas where Exelon operates, and is on the Board of his undergraduate alma mater, Bradley University in Peoria, Ill. Butler also serves on the James Madison Council of the Library of Congress.

Butler earned a bachelor's degree from Bradley University and a Juris Doctor degree from Washington University School of Law in St. Louis, Mo. He received an honorary doctorate of Humane Letters from Morgan State University in 2014.