As Puerto Rico continues to restore its energy system following the devastation of Hurricane Maria, ComEd is sending crews and equipment to assist in the restoration of power. ComEd is part of a larger response by Exelon utilities to restore infrastructure destroyed during the hurricane in September. Fifty ComEd linemen, as well as support personnel, will leave for Puerto Rico in early February. Trucks and other equipment are being sent ahead. Crews are expected to be in Puerto Rico for an extended time working on restoring power to residents and businesses. ComEd's support comes following a request by the Puerto Rico Electric Power Authority (PREPA) asking for mainland companies to provide assistance. The 144 employees of Exelon, the nation's largest utility company by customer count, will join a contingent of nearly 1,500 restoration personnel from Edison Electric Institute (EEI) member companies. EEI immediately began coordinating with PREPA, FEMA and the U.S. Army Corps of Engineers on the logistics of adding crews, equipment and materials from across the country to the massive power restoration effort that began after Puerto Rico was hit by two hurricanes in September. Exelon utilities have been coordinating closely with EEI and authorities to prepare for the mutual assistance effort. ComEd and its Exelon sister utilities - BGE, Delmarva Power, Atlantic City Electric, PECO and Pepco - are part of a contingent of more than 1,500 restoration personnel from EEI member companies. "This effort is very personal to many of our customers and employees who have family and friends in Puerto Rico," said Terence R. Donnelly, ComEd Executive Vice-President and Chief Operating Officer. "Our teams are eager to help and look forward to working together with other utility workers to repair the electric infrastructure and restore power." Commonwealth Edison Company (ComEd) is a unit of Chicago-based Exelon Corporation (NYSE: EXC), the nation's leading competitive energy provider, with approximately 10 million customers. ComEd provides service to approximately four million customers across northern Illinois, or 70 percent of the state's population. For more information visit ComEd.com , and connect with the company on Facebook , Twitter and YouTube .