This paper described a dynamic energy model, called DynEMo, which is designed to investigate how society engenders time and climate varying energy service demands in the different sectors (domestic, commercial, industry and transport) and how renewable and other energy resources, can meet these demands over different time scales. Certain model inputs are surveyed and sample outputs of a modelled efficient, electrified, high renewable energy system with district heating and fuel synthesis are given. Over short time periods, DynEMo calculates demands and renewable supplies and the storage of heat, electricity and chemical energy, being used to examine the technical feasibility of proposed systems and contribute towards the design and control of dynamic, renewable systems.