This book provides a theoretical basis for understanding the phenomenon of renegotiations in Public Private Partnerships (PPPs). It analyzes the case of transport projects, and provides empirical evidence from a variety of real-world projects. What drives renegotiations? Why are some projects more likely to be renegotiated than others? What are the outcomes? How can we improve the performance of renegotiation processes? These questions form the core of discussion in this book. PPPs are a procurement model for the delivery of infrastructure and public services that have experienced significant growth over the last three decades, particularly in terms of the development of transportation projects. The empirical evidence suggests that most PPP projects are inevitably renegotiated, i.e., the original contract needs to be adapted to new and unforeseen circumstances. The impacts of these changes on the welfare of the respective stakeholders are frequently asymmetric. Most academic research and professional guidelines are focused on PPP contract design and preparation of the procurement process, and very little has been published on the management and, mainly, the process of renegotiating that will - in all likelihood - occur. This book fills this gap in the academic discussion. Several country-based analyses and case studies from Europe and the Americas provide the reader with practical applications of the theory.

Economic development and social welfare depend on the existence of effective and efficient infrastructure systems, particularly in health, energy, transportation and water, many of which are developed and managed through Public-Private Partnerships (PPPs). However, empirical evidence suggests some pitfalls in the use of these PPP arrangements. This book addresses these issues, focusing on mostly three key questions: How to improve the robustness of the decision-making process leading to the option of PPP? How to improve contract management as the longest phase of the process? How can contracts be improved to accommodate uncertainty and avoid harmful renegotiations? The authors explore the concept of flexible contracts, the uncertainty modeling for improving the robustness of the decision-making process, and develop an overall framework for effective contract management, along with a comprehensive analysis of current renegotiation patterns. The ultimate goal is to improve the contractual performance, as well as the overall infrastructure management and social welfare.

There is a growing interest in Public-Private Partnerships (PPPs), particularly in infrastructure and public services. Under the scope of PPPs, renegotiations are becoming more relevant, as empirical evidence suggests that most PPP projects are inevitably renegotiated, i.e., the original contract needs to be adapted to new and unforeseen circumstances. Renegotiations have a substantial impact on the contract and performance of a PPP and usually represent significant costs for users and taxpayers. However, very little is known about the management and, mainly, the process of renegotiating that will, very likely, occur. This book provides a set of case-studies of PPP renegotiations in the transport sector. The authors illustrate the Portuguese experience, a country that has been using PPP extensively, particularly in transport. The case studies provide an extensive and detailed analysis on each aspect of the project and the renegotiation. What drives renegotiations? Why are some projects more renegotiated than others? What are the results? How can the performance of renegotiation processes be improved? These and other questions provide the basis for the discussions in this book. The novelty and value of the book come mainly from the extent of information available. Each case-study deals with these questions in much more detail than what is common in the case-studies approach.

There is a growing interest in Public-Private Partnerships (PPPs), particularly in infrastructure and public services. Under the scope of PPPs, renegotiations are becoming more relevant, as empirical evidence suggests that most PPP projects are inevitably renegotiated, i.e., the original contract needs to be adapted to new and unforeseen circumstances. Renegotiations have a substantial impact on the contract and performance of a PPP and usually represent significant costs for users and taxpayers. However, very little is known about the management and, mainly, the process of renegotiating that will, very likely, occur. This book provides a set of case-studies of PPP renegotiations in the transport sector. The authors illustrate the Portuguese experience, a country that has been using PPP extensively, particularly in transport. The case studies provide an extensive and detailed analysis on each aspect of the project and the renegotiation. What drives renegotiations? Why are some projects more renegotiated than others? What are the results? How can the performance of renegotiation processes be improved? These and other questions provide the basis for the discussions in this book. The novelty and value of the book come mainly from the extent of information available. Each case-study deals with these questions in much more detail than what is common in the case-studies approach. 

This book provides a theoretical basis for understanding the phenomenon of renegotiations in Public Private Partnerships (PPPs). It analyzes the case of transport projects, and provides empirical evidence from a variety of real-world projects. What drives renegotiations? Why are some projects more likely to be renegotiated than others? What are the outcomes? How can we improve the performance of renegotiation processes? These questions form the core of discussion in this book. PPPs are a procurement model for the delivery of infrastructure and public services that have experienced significant growth over the last three decades, particularly in terms of the development of transportation projects. The empirical evidence suggests that most PPP projects are inevitably renegotiated, i.e., the original contract needs to be adapted to new and unforeseen circumstances. The impacts of these changes on the welfare of the respective stakeholders are frequently asymmetric. Most academic research and professional guidelines are focused on PPP contract design and preparation of the procurement process, and very little has been published on the management and, mainly, the process of renegotiating that will - in all likelihood - occur. This book fills this gap in the academic discussion. Several country-based analyses and case studies from Europe and the Americas provide the reader with practical applications of the theory.

Economic development and social welfare depend on the existence of effective and efficient infrastructure systems, particularly in health, energy, transportation and water, many of which are developed and managed through Public-Private Partnerships (PPPs). However, empirical evidence suggests some pitfalls in the use of these PPP arrangements. This book addresses these issues, focusing on mostly three key questions: How to improve the robustness of the decision-making process leading to the option of PPP? How to improve contract management as the longest phase of the process? How can contracts be improved to accommodate uncertainty and avoid harmful renegotiations? The authors explore the concept of flexible contracts, the uncertainty modeling for improving the robustness of the decision-making process, and develop an overall framework for effective contract management, along with a comprehensive analysis of current renegotiation patterns. The ultimate goal is to improve the contractual performance, as well as the overall infrastructure management and social welfare.