Explore: Commonwealth Edison

Commonwealth Edison, commonly known by syllabic abbreviation as ComEd, is the largest electric utility in Illinois, and the primary electric provider

McDermott Will & Emery, remaining there until 1998. Pramaggiore joined Commonwealth Edison (ComEd) as an attorney focused on deregulation and was named senior

Commonwealth Edison Co. v. Montana, 453 U.S. 609 (1981), is a 6-to-3 ruling by the Supreme Court of the United States that held that a severance tax in

owns six regulated utilities: Atlantic City Electric (New Jersey), Commonwealth Edison (Illinois), PECO Energy Company (Pennsylvania), Baltimore Gas and

Mary Lincoln Isham. For Isham's trust, he deposited 375 shares of Commonwealth Edison stock worth slightly more than $38,000 (equivalent to $689,000 in

utility, the Commonwealth Electric Light & Power Co. In 1907, Insull's two companies formally merged to create the Commonwealth Edison Co. During a Chicago

moved to Chicago to begin his career with the Chicago Edison Co. (now known as Commonwealth Edison). He worked in various areas throughout his career, including

imposed a 30 percent tax on most sub-bituminous coal mined there. The Commonwealth Edison Company and other utility companies argued, in part, that the Montana

Corporation was an American energy holding company formed in 1994 from Commonwealth Edison after executives considered a corporate image makeover. The holding

Illinois) was president (1964–1980), CEO and chairman (1973–1980) of Commonwealth Edison. Ayers served as chairman of the Board of Trustees of Northwestern