Before joining ComEd, Dominguez served as executive vice president of governmental and regulatory affairs and public policy for ComEd parent company Exelon. In that role, he led the development and implementation of federal, state, and regional governmental, regulatory, and public policy strategies for one of the nation's largest electric companies with approximately $34 billion in annual revenues.
Dominguez joined Exelon in 2002 as associate general counsel, responsible for all litigation matters in the Mid-Atlantic region. In 2004, he was named general counsel for ComEd sister company PECO. In 2007, he was named senior vice president of state regulatory and government affairs and general counsel of Exelon Generation. His role expanded in 2009 to include senior vice president of communications, and in 2010 he was named senior vice president of federal regulatory affairs and public policy for Exelon. In 2012, Dominguez became senior vice president of governmental and regulatory affairs and public policy for Exelon.
Prior to joining Exelon, Dominguez was a partner in the law firm of White and Williams, LLP, with a broad-based litigation practice counseling large and small corporations, institutions, and government entities. He is a former assistant U.S. Attorney, Eastern District of Pennsylvania, where he spearheaded the investigation and prosecution of numerous crimes ranging from money laundering to murder-for-hire.