This study investigates the challenges faced by small- and medium-sized manufacturing enterprises (SMEs) as they attempt to respond to decarbonization demands and expand into renewable-energy markets. Drawing on three waves of free-response surveys conducted between 2021 and 2024, and applying the KJ qualitative synthesis method, the analysis identifies multi-layered constraints across financial, technological, human resource, organizational, and institutional domains. The findings show that the central difficulty for SMEs lies in reconciling exploration—the pursuit of new technologies and business opportunities—with exploitation—the need to maintain and improve existing operations. External stakeholder pressure frequently accelerates this tension, compelling SMEs to initiate environmental actions even when internal capabilities remain insufficient. Based on the emergent patterns, the study develops an “Exploration–Exploitation Support Matrix,” providing a practical framework for policymakers to design coordinated support measures. The study contributes to the integration of eco-innovation, absorptive capacity, and ambidextrous management theories and offers actionable insights for promoting sustainable SME transitions.
Keisuke Kokubun (Mon,) studied this question.