Book excerpt: Mechanical Energy Storage Technologies presents a comprehensive reference that systemically describes various mechanical energy storage technologies. State-of-the-art energy storage systems are outlined with basic formulation, utility, and detailed dynamic modeling examples, making each chapter a standalone module on storage technology. Each chapter includes a detailed mathematical model of the given energy storage system along with solved and unsolved examples, case studies, and prospects among emerging technologies and solutions for future energy systems. Giving a detailed understanding of why mechanical energy storage systems are useful, this book is a beneficial reference for anyone researching and working in mechanical energy storage systems. - Covers advances in mechanical energy storage systems, both electricity and heat, in one reference - Includes solved and unsolved examples for each storage technology - Offers end-of-chapter summaries for each application - Includes detailed mathematical models of each energy storage system examined