A major challenge facing infrastructure policy makers in developing countries today is working out how best to help poor people improve their access to good, reliable infrastructure services. Currently, people lack access to safe water and sanitation, modern sources of energy and electronic means of communication. As a result, they incur high costs obtaining low-quality substitutes.This book seeks to cast light on the problem of access to infrastructure services by poor people and to help policy makers design private infrastructure reforms so that they maximize efficient and sustainable improvements in access.