Can renewable energy provide reliable power? Will it need extensive backup? The energy available from wind, waves, tides and the sun varies in ways that may not match variations in energy demand. Assimilating these fluctuations can affect the operation and economics of electricity networks, markets and the output of other forms of generation. Is this a significant problem, or can these new sources be integrated into the grid system without the need for extensive backup or energy storage capacity? This book examines the significance of the issue of variability of renewable electricity supplies, and presents technical and operational solutions to the problem of reconciling the differing patterns of supply and demand. Its chapters are authored by leading experts in the field, who aim to explain and quantify the impacts of variability in renewable energy, and in doing so, dispel many of the myths and misunderstandings surrounding the topic.

Energy Systems and Sustainability provides an exploration of the economic, social, environmental, and policy issues raised by current systems of energy use, as well as describing their key physical and engineering features. From an overview of the historical evolution of the world's energy systems, through the principles underlying their use, to future prospects and sustainability, this comprehensive text provides thorough coverage of contemporary energy conversion systems and their impact on society and the environment. The engaging writing style and frequent use of illustrations makes the text accessible for students of all backgrounds and levels. Feature boxes throughout the text present explanations of the more advanced topics and detailed energy arithmetic is addressed in the appendix. The new edition has been thoroughly updated to include the most recent statistics and developments in this rapidly moving field. Digital formats and resources Energy Systems and Sustainability is available for students and institutions to purchase in a variety of formats. The e-book offers a mobile experience and convenient access along with functionality tools, navigation features, and links that offer extra learning support: www.oxfordtextbooks.co.uk/ebooks The online resources to accompany Energy Systems and Sustainability include: For students: * Links to sources of further information and up-to-date energy statistics * Self-assessment questions For registered adopters of the book: * Figures from the book, available for download