Book excerpt: Storing Energy: With Special Reference to Renewable Energy Sources, Second Edition has been fully revised and substantially extended to provide up-to-date and essential discussion that will support the needs of the world's future energy and climate change policies. New sections cover thermal energy storage, tidal storage, sustainability issues in relation to storing energy and impacts on global energy markets. Various systems are discussed, including mechanical/kinetic, thermal, electrochemical and other chemical, as well as other emerging technologies. Incorporating advancements described in the book will help the people of the world further overcome the problems related to future energy and climate change. - Covers all types of energy storage systems, allowing and encouraging comparisons to be made - Written by world experts in the field to provide the latest developments in this fast moving and vital technology - Covers the technical, environmental, social and political aspects related to the storing of energy, and in particular, renewable energy