We examine the economics of infrastructure finance, focusing on public provision and public-private partnerships (PPPs). We show that project finance is appropriate for PPP projects, because there are few economies of scope and assets are project specific. Furthermore, we suggest that the higher cost of finance of PPPs is not an argument in favour of
In this paper we quantify the potential social-welfare loss due to the existence of limited liability in the principal-agent problem. The worst-case welfare loss is defined as the largest possible ratio between the social welfare when the agent chooses the effort that is optimal for the system and that of the sub-game perfect equilibrium of