Applying AHP-IFNs-DEMATEL in Establishing a Supplier Selection Model: A Case Study of Offshore Wind Power Companies in Taiwan

Offshore wind power has emerged as a relatively new industry in Taiwan recent years. Energy companies strive to achieve maximum production capacity and product lifespan at the lowest cost. Therefore, selecting most suitable supplier is primary objective. This research identified 23 evaluation criteria for selection based on literature review. By employing Analytic Hierarchy Process (AHP), individual weights were assigned each criterion. Subsequently, Intuitionistic Fuzzy Numbers Decision Making Trial Evaluation Laboratory (IFNs-DEMATEL) method was used analyze 11 with higher than average, thereby exploring overall causal relationships. Additionally, by utilizing four quadrants of Influential Relation Map (IRM), offshore suppliers can adjust resource allocation maximize benefits. The findings this provide recommendations shipping their allocation. Furthermore, development enhance competitiveness criterion analysis derived from Map.