Investment in environmental technologies is a thorny issue, as risk and return are highly dependent on a range of technical, regulatory, political and other factors. However, there is no denying that this investment will be key in achieving a genuinely low-carbon economy. This book is an indispensable introduction and guide to the challenges and opportunities faced by those looking to invest, or secure investment in, environmental technology. The book begins by setting out the goals of a low-carbon economy and discussing the technologies which can contribute to making it a reality. It then examines various ways in which technological development is currently funded, how this funding works (or doesn't work) and what the drivers and barriers are to securing investment. The book goes on to explore how funding of environmental technology is likely to change and innovate in future, and how systems can be improved to reduce risk. Using examples from Europe, North American and Asia, this text provides a valuable and comprehensive roadmap to the issues for investors and funders, businesses, entrepreneurs and students.