In future the UK's energy supplies, for both heat and power, will come from much more diverse sources. In many cases this will mean local energy projects serving a local community or even a single house. What technologies are available? Where and at what scale can they be used? How can they work effectively with our existing energy networks? This book explores these power and heat sources, explains the characteristics of each and examines how they can be used. This new series of books from the IET brings together the engineering aspects of renewable energy technology, power generation and systems integration. Covering all aspects of renewable and sustainable power and highlighting the key principles behind each technology, its state of development and its relevance in the power industry. With energy and sustainability being areas of primary concern, these books are practical in approach and appeal to specialists and non-specialists alike, providing a thorough understanding to the economical and environmental issues as well as key engineering features.