The PPP data presented in this paper includes both the number of projects and the total amount of capital raised by the project company at closure. Variations in the data can often be found depending on the source used. Based on the data sources listed above, the following rules were used to aggregate the data:
- Project count: For the period 1990-2007 different lists of projects available from commercial databases, public sources and EIB files were sorted by financial close and cross checked project by project. When significant discrepancies were found further research was done for individual projects (through EIB investment officers and EPEC). For 2008 and 2009, EPEC, in coordination with national authorities, compiled a consistent list of PPP projects, which is comparable across countries.
Note: In the UK, the list of projects published by HMT features less projects than previous versions because the data has been 'restructured'. We chose to use all known UK projects that are in line with our definition of PPPs as outlined in the introduction.
- Project investment: Investment is defined as sum of debt and equity at financial close. In the case of PPPs closed between 1990 and 2007, the main data source was Projectware. PPP values for 2008 and 2009 have been drawn by EPEC from publicly available sources, in coordination with national authorities.