As reported in a number of studies, European countries are not fulfilling their potential to foster innovation through public procurement. The barriers encountered to mainstream innovation procurement were analysed in 2015 by the European Research Area and Innovation Committee (ERAC), which recommended to develop a systematic measurement framework for innovation procurement in order to track the progress made in this field across Europe. This study was implemented to fill this gap, by developing a methodology that enables to benchmark national policy frameworks for innovation procurement and national investments in public procurement of innovative solutions across 30 countries (EU 27, UK, Norway and Switzerland) in 2018. It includes an analysis of investments across different domains of public sector activity (health, transport etc.) and strategic expenditure categories, in particular ICT, that fuel public sector modernisation. While the benchmarking of policy frameworks covered all forms of innovation procurement – both R&D procurements and public procurements of innovative solutions - the analysis of investment levels in this study focused only on quantifying the amount of public procurement of innovative solutions (PPI). A separate analysis by the European Commission estimated the amount of R&D procurement that took place in 2018. The results of these two analyses are combined in a separate EC report that provides a full picture on the amount of innovation procurement that takes place across Europe.