The increasing of energy demand, the limited reserves of fossil fuel and the awareness of clean environment have led to find another alternative energy for these problems. Biofuel is one of alternative of renewable energy from living organism. Based on its form, biofuel can be classified into bioethanol, biodiesel and biogas. The research is focusing on biodiesel to replace diesel oil, which derived from Reutealis Trisperma. Currently, Indonesia produced all of biodiesel from Crude Palm Oil (CPO). Unlike CPO, Reutealis Trisperma does not threat the food security because it is a non-edible plant. It can be cultivated on wide variety of land and has high potency as biodiesel feedstock. The research purposes to assess and to utilize the Reutealis Trisperma production as biodiesel feedstock for Indonesia by constructing a system model for the biodiesel production with related variables such as land, productivity, conversion efficiency, biodiesel demand and others, using Dynamic System Modeling. It also illustrates the projection of biodiesel production from Reutealis Trisperma and CPO. The scenario of pilot project of Reutealis Trisperma, which will be planted in several districts in West Java, and it will give the projection from 5-25 years of cultivation, starting from 2017. The result shows that Reutealis Trisperma and CPO will produce biodiesel sufficiently fulfilling the demand. Furthermore, in the year of 2028 as Reutealis Trisperma productivity increases, biodiesel demand will be fully supplied by biodiesel from Reutealis Trisperma.