The introduction or expansion of a nuclear power programme in a country and its successful execution are largely dependent on the network of national infrastructure, covering a wide range of organizational and material activities and capabilities. Such infrastructure requires an investment that could be large or onerous for a national economy. The burden of infrastructure can be reduced significantly if a country forms a sharing partnership with others. The sharing could be organized regionally or internationally. It can include physical facilities or common programmes and knowledge, and will be reflected in economic benefits. This publication provides guidance for analysing and identifying the potential benefits of sharing nuclear power infrastructure during various stages of the nuclear power project life cycle. The target users of this publication are decision makers, advisers and senior managers in utilities, industrial organizations, regulatory bodies and governmental organizations in countries adopting or extending nuclear power programmes.