CHICAGO–(BUSINESS WIRE)–ComEd today announced the successful energization of two new 345 kV transmission substations to its grid, enabling the interconnection of up to 550 megawatts (MW) of wind generation in LaSalle and Woodford counties. With unprecedented demand for electricity across the US and here in Illinois, ComEd customers have seen the impact of higher PJM, the electric transmission grid operator for 65 million people in 13 states and the District of Columbia, including ComEd’s serv