This paper presents the results of computational modeling analysis conducted by the U.S. Army Engineer Research and Development Center team of two categories of buildings with relatively low internal loads in 15 U.S. climates using the Net Zero Planner tool. This tool enabled simultaneous simulation of multiple building types and multiple technology bundles of energy efficiency measures in different climate zones. This research supported development of requirements for building envelope characteristics for DER projects. Information presented in the paper along with results of similar studies conducted in Denmark, Estonia, Austria, Germany, China, and UK [2,3,4] for their nation-specific climate conditions have been used to develop general guidelines for technology bundles to be used in DER projects [5].