Green procurement has become an important approach for linking sustainability objectives with practical outcomes in both public and corporate supply chains. A central question is whether the incentives written into procurement contracts encourage real technological progress or merely symbolic compliance. This study examines how different incentive designs in procurement influence the quality of innovation and the reduction of supply chain emissions, with a particular focus on the Singaporean context and comparisons within Asia.

The analysis considers how procurement requirements that reward environmental performance affect suppliers’ decisions on capital investment and production processes. The outcomes are measured through indicators of innovation quality, such as forward citations and patent family breadth, together with observed changes in product carbon footprints that reflect environmental performance.

The results show that incentive-based procurement is linked with improvements in patent quality and measurable reductions in supply chain carbon emissions. At the same time, corporates engaged in such procurement display a smaller gap between what they disclose in sustainability reports and what is verified in practice, suggesting lower levels of greenwashing.

This research contributes to the literature on sustainability and operations management by demonstrating how procurement incentives can promote substantive innovation while also supporting credible progress in supply chain decarbonisation. It provides practical implications for policymakers and managers seeking to design procurement systems that align incentives with genuine outcomes.