Considering the recent happenings in the energy market of Latvia, future strategies for natural gas market and infrastructure remain unclear. For policy planners and gas market stakeholders it is crucial to deal with this uncertainty and aim for exploitation of existing natural gas infrastructure. In this case a model that allows to explore opportunities for renewable energy applications in natural gas infrastructure and at the same time provides information about security of energy supply can be highly desirable. Therefore, this paper presents a System Dynamics model made for natural gas infrastructure with storage facility in the Latvian context. The model incorporates the specific parts of the Latvia’s natural gas infrastructure (transmission system and storage facility) and their characterizing parameters: natural gas transmission system capacities, storage facility capacities, working regimes, processes performed by transmission system operator for transmission system balancing based on natural gas flows. Model has potential to be used as a tool in energy policy planning processes for evaluation of different RES strategies and natural and technogenic risks of gas supply disruption. For this purpose, model must be upgraded with aspects that show gas market dynamics.