Results from the OECD 2022 survey on green public procurement (GPP), carried out in 38 countries, clearly show that countries increasingly recognise GPP as a major driver for innovation. In fact, in 2022, 92% of the surveyed countries (35 out of 38) had adopted a national GPP or policy framework, and 29 of them refer to GPP, or at least to public procurement, in their national environmental commitments as a tool for pursuing sustainability goals. GPP provides industry with incentives for developing environment-friendly works, products and services, particularly in sectors where public purchasers represent a large share of the market, such as infrastructure, health services or public transportation. However, the results also highlight remaining challenges in mainstreaming green objectives in government procurement, including a lack of data on the impacts of green procurement strategies and the need to better capture the lifecycle costs and environmental impacts of goods and services procured to encourage the private sector to compete on green dimensions. Furthermore, the perception that GPP involves higher public procurement costs is still perceived by 22 countries as one of the main obstacles to a better uptake of GPP.