From theory to practice: a methodological roadmap for mapping, assessing, and implementing industrial symbiosis

Industrial symbiosis (IS) is a collaborative approach where industries share and reallocate resources, such as materials, energy, water, and by-products, create mutual benefits and contribute to a circular economy. This concept is limited due to the complexity of implementation and challenges with understanding the roadmap for their establishment. This study aims to bridge the gap between theory and practice by developing a comprehensive, methodologically grounded roadmap for implementing industrial symbiosis. The research combines a review of existing literature with the analysis of real-world case studies to identify and systematize the essential phases, tools, and success factors involved in the industrial symbiosis implementation process.A detailed roadmap comprised key phases: mapping the current situation, identifying potential synergies, assessing feasibility, selecting the most appropriate opportunities, and implementing initiatives. The paper analyzes the relevant methods, tools and criteria for each phase. Particular attention is paid to key success factors, including resource and technology compatibility, geographical aspects, environmental impact, economic viability, and regulatory compliance. The importance of collaboration between different stakeholders and the role of intermediaries in the industrial symbiosis implementation process are highlighted. Based on the realized industrial symbiosis case studies, a few recommendations are given to support adopting industrial symbiosis strategies. The proposed roadmap emphasizes the importance of detailed resource flow mapping, multi-criteria assessment, and stakeholder collaboration with key success factors laying in evaluating technical, economic, environmental, and regulatory dimensions using appropriate tools.Based on the research findings, the proposed roadmap consolidates fragmented approaches, supports strategic planning and provides practical guidance for companies and practitioners looking to integrate industrial symbiosis into their business. It contributes to a better understanding of the complexity of industrial symbiosis implementation and provides a framework for the wider adoption of these practices in the industry. This research contributes to the operationalization of industrial symbiosis by offering a replicable and adaptable roadmap. Further research should explore digital tools for synergy identification and assess policy mechanisms that can incentivize industrial symbiosis implementation at regional and national levels.