DELISTED – Pepco Holdings, Inc. (PHI) is a holding company, that, through regulated public utility subsidiaries, is engaged primarily in the transmission, distribution and default supply of electricity and the distribution and supply of natural gas (Power Delivery): Potomac Electric Power Company (Pepco), Delmarva Power & Light Company (DPL) and Atlantic City Electric Company (ACE). As of December 31, 2012, the Company segments include Power Delivery, consisting of the operations of Pepco, DPL and ACE, engaged in the transmission, distribution and default supply of electricity and the distribution and supply of natural gas, Pepco Energy Services and Other Non-Regulated, consisting primarily of the operations of PCI. PHI Service Company, a subsidiary service company of PHI, provides a range of support services, including legal, accounting, treasury, tax, purchasing and information technology services, to PHI and its operating subsidiaries.