The current understanding of food security significantly impacts agricultural policy, especially regarding the availability of food to meet local and national needs. The Banggai yam is a local carbohydrate crop in Banggai Islands Regency that plays a vital role in food diversification and security. Thanks to its high carbohydrate content, this tuber has great potential as a food reserve and an alternative to rice to support food sovereignty in Banggai Islands Regency. To cope with the increasing demand, a comprehensive development plan is needed. This research aims to develop a model of Banggai yam production and needs as a fulfilment of food availability in the Banggai Islands Regency. This research uses a dynamic system approach. The dynamic system can describe the relationship between various variables in its development. The results of the study indicate that the current level of Banggai yam production is insufficient to meet overall demand. Currently, there is a production deficit of 1,703.54 tons for Banggai yam in 2018, which is projected to decrease to 1,514.9 tons by 2042. Simulation results indicate that with a 1.2 percent increase in the planting index, a 1 percent expansion of new land, and a 4 percent increase in exports in Scenario 1, which is overall moderate, a surplus of 3.3 tons will be achieved, with production reaching 11,846.8 tons and demand at 11,843.5 tons. This scenario will meet the total demand for Banggai yam until 2042. Successful implementation depends on the involvement of various stakeholders, including the government, farmers, and businesses involved in Banggai sweet potato production, making this commodity a flagship food product in Banggai Islands Regency.