Exelon is a utility services holding company. The business of Co.'s Exelon Generation Company, LLC (Generation) subsidiary consists of its owned and contracted electric generating facilities and investments in generation ventures that are marketed through its customer-facing activities. Co. also engages in the energy delivery businesses through its other subsidiaries, Commonwealth Edison Company (ComEd), PECO Energy Company (PECO) and Baltimore Gas and Electric Company (BGE). Co. has nine segments consisting of Generation's six power marketing segments (Mid-Atlantic, Midwest, New England, New York, Electric Reliability Council of Texas, and other regions in Generation), ComEd, PECO and BGE.

Preferreds: CEG.PRA, BGE.PRB