Rendering the supply chain more eco-friendly is an innovative idea progressively adopted by industry. Consequently, our research focuses on the CO2 emissions along the supply chain due to freight energy use and storage. A supply chain approach by using a discrete event model was developed. Our proposed tool is able to model Re Order Point production management policy (ROP) and the main demand response strategy Make To Stock (MTS). In addition, the Overall Equipment Effectiveness indicator (OEE), the location of the firms and their types of products are modeled. This method is applied to mechanical and textile industries. The principle objectives of the study are twofold: develop a supply chain simulation benchmark and conduct pertinent experiments to improve green supply chain.