Gulf Coast Electric Cooperative Inc., Wewahitchka, Florida, has been awarded a $150,988,975 modification (P00134) to a 50-year contract (SP0600-10-C-8253) with no option periods for the construction of a new potable water and electric utility corridor at Tyndall Air Force Base, Florida. This is a firm-fixed-price with economic-price-adjustment contract. The performance completion date is May 31, 2026. Using military service is Air Force. Type of appropriation is fiscal 2022 through 2026 Air Force military construction funds. The contracting activity is the Defense Logistics Agency Energy, Fort Belvoir, Virginia.