This Decision and Order considers an Appeal filed by American Electric Power Company, Inc. (AEP) from a determination issued on July 7, 1998, by the Office of Energy Efficiency and Renewable Energy (EE) of the Department of Energy (DOE), under provisions of 10 C.F.R. Part 490 (Alternative Fuel Transportation Program). In its determination, EE substantially denied a request filed by AEP for an exemption from the firm’s 1998 Model Year (MY) alternative fuel vehicle (AFV) purchase requirements under the Part 490 program. If the present Appeal were granted, AEP would be exempted from its 1998 MY purchase requirements, as initially requested by the firm. As set forth in this Decision and Order, we have concluded that AEP’s Appeal should be denied.