Hyliion Inc.,* Cedar Park, Texas, is awarded a cost-plus-fixed-fee contract for the High Efficiency/Low Maintenance 250-kW Power Source 60-day test profile and evaluation effort. The total cumulative value of this contract, including a 24-month base period with no options, is $15,973,055. This contract provides for building and demonstrating the 250 kW Stirling generator module and performing post-test disassembly and evaluation. The Stirling generator will consist of a production 12-cylinder six-shaft free piston Stirling Engine that was adapted to meet Office of Naval Research (ONR) requirements. The demonstration test will be conducted at a Hyliion test facility for a 60-day demonstration utilizing the test profile provided by ONR. Following the test, the 250-kW test module will be disassembled to evaluate the hardware for degradation and serviceability. Work will be performed in Cedar Park, Texas, and is expected to be completed in August 2026. Fiscal 2023 and fiscal 2024 research, development, test and evaluation (Navy) funds in the amount of $9,653,528, and $4,260,358, respectively, are obligated at time of award. Funds in the amount of $9,653,528 will expire at the end of the current fiscal year. This contract was competitively procured under long range broad agency announcement (BAA) (N0001423SB001) entitled “Long Range Broad Agency Announcement (BAA) for Navy and Marine Corps Science and Technology,” posted Sept. 30, 2022. Since proposals were received throughout the year under the Long-Range BAA, the number of proposals received in response to the solicitation is unknown. ONR, Arlington, Virginia, is the contracting activity (N0001424C1305).