An assessment of a selection of initiatives based on the NAZCA portal and UNEP Climate Initiatives Platform shows that EU national governments are well represented in these initiatives, but the level of participation varies between countries and is generally limited to Northwestern Member States and Italy. On the other hand, EU Cities participation is more widespread, but transparency and availability of emissions and energy data can be improved. Most transport initiatives in which EU Member States participate do not include quantifiable targets, which would be key to increase effectiveness.