Us Western Area Power Admin Guernsey Dam Guernsey, WY 82214 Phone : (307) 836-2091 Business Category Regulation & Admin Of Communications Electric Gas & Other Utilities United States Government--energy Dept Of, Western Area Power Administration, Limestone Substation Guernsey Dam Guernsey Dm Guernsey, WY 82214 Phone : (307) 836-2091 Business Category Government Offices-Federal Electric Companies Government Offices & Public Schools