Naval Facilities Engineering Command (NAVFAC) and ARPA-E will collaborate to initially assess up to 15 advanced concept research projects from the ARPA-E portfolio “Building Energy Efficiency Through Innovation Thermodevices” (BEETIT) and then select up to approximately 4 concepts which are considered as the most likely technologies to benefit the NAVFAC development objectives, and with the NAVFAC-ARPA-E goal of maturing them to be demonstrated at Technology Readiness Level 6.