Calvin G. Butler Jr. is a senior executive vice president and chief operating officer at Exelon. Butler oversees Exelon’s six local electric and natural gas companies -- Atlantic City Electric, BGE, ComEd, Delmarva Power, PECO and Pepco – and also serves as the interim CEO of ComEd (Chicago). Together, the six companies form the nation’s largest utility company by customer count, serving approximately 10 million electric and gas customers in New Jersey, Maryland, Illinois, Delaware, Pennsylvania and the District of Columbia, respectively. Butler serves as vice chairman of each utility’s board and is a member of Exelon’s executive committee.
Butler serves on the boards of M&T Bank Corporation and M&T Bank, its principal banking subsidiary, and is immediate past board chair of the Gridwise Alliance, an advocacy organization promoting modernization and innovation for the nation’s electrical grid. He also serves on the board of several other prominent organizations including RLI Corp., for which he is a member of its audit and nominations/governance committees.
Butler previously served as CEO of BGE from 2014 to 2019. Prior to that role, Butler was BGE’s senior vice president, regulatory and external affairs. Butler also served as Exelon’s senior vice president of corporate affairs, Chief Human Resources Officer, and held other leadership positions at Exelon and ComEd.
 Before joining Exelon in 2008, Butler held senior leadership roles in external affairs as well as manufacturing with the print, digital and supply chain solutions company RR Donnelley. He spent his early career with CILCORP (Central Illinois Light Co.), where he held positions in government affairs, legal and strategy.