Public-Private Partnerships (PPP) have been an important tool for governments to develop public infrastructure without compromising the government’s budget and increasing public expenditure. Furthermore, PPP Programs have been a tool to, rapidly and efficiently, match the public demand for infrastructure in evolving economies where the government cannot match the development speed and therefore needs the private sector's help and efficiency in project development and execution to support the country's growth. Following this path, Chile, since 1993, has put in motion an ambitious program, which during 30 years of application and error has evolved to become one of the world’s biggest PPPs.