Public Utilities & Environment All Categories... Utilities go Results Found: 4 Button group with nested dropdown Magic Valley Electric Cooperative, In... Magic Valley Electric Cooperative, Inc. 1 3/4 Miles W. Highway 83 Mercedes TX 78570 (866) 225-5683 AEP Texas AEP Texas 355 W. Bus. Highway 77 San Benito TX 78586 (956) 361-2088 Hydro Systems, Inc. Hydro Systems, Inc. 1501 N 28th St Harlingen TX 78550 (956) 423-4932 Texas Gas Service Company Texas Gas Service Company 5602 Grimes Rd PO Box 531827 Harlingen TX 78550 (800) 700-2443