This EIS analyzes DOE's decision to approve the Public Service Company of New Mexico (PNM) for a Presidential permit to construct two transmission lines originating at the switchyard of the Palo Verde Nuclear Generating Station (PVNGS) near Phoenix, Arizona, and extending approximately 160 miles to the south along one of three alternative routes, where they would cross the United States (U.S.) border with Mexico in the vicinity of Nogales, Arizona.