Abstract
<jats:p>The construction industry is confronted with the challenge of greenhouse gas emissions. Additionally, this industry is responsible for CO2 emissions through its supply chain operations and the production of construction materials. To address this issue, this research investigates the role of suppliers in the decarbonisation process. Selecting a supplier is a strategic choice for every organization. The goal of this research is to evaluate suppliers of modular materials for the purpose of reducing CO2 emissions in the construction industry. In this research, four generic suppliers were analysed based on 11 criteria. The evaluation of these suppliers was conducted using seven companies involved in the construction of modular homes. A fuzzy approach was employed to assess the significance of these criteria and to evaluate the degree to which suppliers fulfill these established objectives. By utilizing the fuzzy SiWeC (Simple Weight Calculation) technique, the significance of the criteria was analyzed, revealing that the foremost criterion in the selection of suppliers is waste management and recycling. Suppliers were ranked through the fuzzy CORASO (Compromise Ranking from Alternative Solutions) method, demonstrating that a large international supplier best meets the established goals. The research conducted indicated that with the appropriate selection of suppliers, it is feasible to impact the reduction of carbon dioxide emissions within the construction industry.</jats:p>