Public-private partnerships (PPPs) have emerged as an option to provide infrastructure services, somewhere in between public provision and privatization. The experience with PPPs during the last 25 years has been mixed, the good news is that we have learned a lot on when PPPs are the best option (and when not).

The main problems with PPPs have been recurrent renegotiations of contracts, often opportunistic, and the use of PPPs to avoid budgetary controls and anticipate spending. Both these problems are closely related with the governance of PPPs.

This workshop will review recent work on the above issues and recent proposals to deal with both challenges, concentrating on open research questions.