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Coal loses out in powering Chicago (access required)

Constellation, the Baltimore-based energy supply subsidiary of Chicago-based Exelon Corp., announced a unique agreement with the city of Chicago to supply power entirely generated by coal-free facilities. Under the 25-month agreement, energy will be supplied to all city-owned facilities, including O’Hare and Midway airports, from nuclear and natural gas generation facilities based in Illinois. The non-coal supply ...