Mitigation of the financial risks attendant on a nuclear power plant new build project is a key to ensuring project viability. This publication emphasizes how various risks - including those typically considered to be `engineering risks' - will give rise to such financial risks. It then introduces the linkage between efficient financial risk allocation/mitigation and the cost of capital, and sets out a range of mechanisms which can be used to manage and allocate risks efficiently, thereby minimizing the cost of capital and enhancing project economics. At a practical level the publication provides an insight into the concerns, modes of thinking, and language which a nuclear new-build proponent may expect to encounter within the financing community as they seek to develop their project.