The Big Buyers Initiative presents an opportunity for public authorities to engage with other authorities across Europe and to shape new innovative solutions to their procurement needs. ICLEI and EUROCITIES are currently running the initiative on behalf of the European Commission, DG Internal Market, Industry Entrepreneurship and SMEs (DG GROW). The initiative works together with existing networks and organisations active in this area. To put these goals into action, three working groups have been established, with over 40 participating cities, which meet regularly to work on relevant procurement topics. The first group focusses on electric vehicle procurement, the second on circular construction procurement, and the third on zero emission construction vehicles. The groups meet regularly and ICLEI together with EUROCITIES provides faciliation and organises market engagement for the groups to achieve their goals.