Rio Grande Electric Cooperative Inc., Brackettville, Texas, has been awarded a maximum $53,863,488 on modification (P00117) to a 50-year contract (SP0600-09-C-8258) with no option periods incorporating the fifth prospective price redetermination for electric utility services. This is a fixed-price prospective price redetermination contract. The performance completion date is April 8, 2060. Using military service is Air Force. Type of appropriation is fiscal 2024 through 2060 Air Force operations and maintenance funds. The contracting activity is the Defense Logistics Agency Energy, Fort Belvoir, Virginia.