Deliverable D3.1 provides a comprehensive description of the simulation models for dynamic flowsheet simulations of the HYBUILD hybrid sub-systems. The presented models are our tools to develop and design the individual components on the one hand side and the detailed schemes of the sub-systems on the other hand side. In D3.1, we show how connections of individual developed components to sub-systems with basic control strategies are realized and discuss them with the aid of typical examples. By means of lab-scale experiments in WP2 and WP3, the presented models will be validated in the months to come.