TY - JOUR AB - Purpose This paper aims to identify important factors in green public procurement (GPP) implementation and then to clarify how these factors affect GPP implementation.Design/methodology/approach The authors applied the Delphi method first and then conducted a focused and constrained multiple case study at 18 government procurement centers across China.Findings The authors identified four clusters of factors for successful GPP implementation: more clear, consistent and operational policy goals; a nation-wide green procurement campaign to enhance social capital and cultural resources; promoting staff’s ethics, professionalism, capacity and knowledge; and establishing checks and balances among organizations involved in the whole purchasing process.Social implications GPP can significantly improve environmental protection and sustainable development.Originality/value Based on key insights from systems theory and agency theory, the authors emphasize that GPP implementation must take down its own functional silos and adopt a process approach across organizational tiers to synchronize human resource based and inter-organizational capabilities into a unified whole through information sharing, communications and collaboration. VL - 20 IS - 3 SN - 2150-6930 DO - 10.1108/JOPP-03-2019-0017 UR - https://doi.org/10.1108/JOPP-03-2019-0017 AU - Wang Conghu AU - Qiao Yuhua AU - Li Xiaoming PY - 2020 Y1 - 2020/01/01 TI - A systems approach for green public procurement implementation T2 - Journal of Public Procurement PB - Emerald Publishing Limited SP - 287 EP - 311 Y2 - 2024/04/25 ER -