In this study, we evaluate the economics of processes incorporating recently developed catalysts for ammonia synthesis. We focus on Ru/Ca(NH2)2 and Ru/Pr2O3, which show remarkable activity and for which experimental data are abundantly reported to enable reaction modeling. The ammonia synthesis loops embedded with the two catalysts were modeled using ASPEN Plus © . A modified-Temkin model was employed to assess their catalytic activity correctly. In the reported paper, the available data were the test under the reaction conditions up to 10-30 bar, but it is inferred that the target conditions for those catalysts are around 50 bar. We extrapolated the lowpressure results and modeled them as data at 50 bar. The economic feasibility was evaluated at various scales, from small to large scale, and by varying the cases, such as using storage batteries to smooth out the time variability of renewable energy. The conditions under which the newly developed catalyst shows superiority were clarified, and guidelines for future catalyst development were discussed.