This open access book delves deep into the heart of efficient energy storage and transportation of energy, addressing a pressing energy challenge. With a rising global demand for sustainable energy solutions, this book provides a timely exploration of sustainable energy carriers, emphasizing the comprehensive sustainability assessment from technical, economic and environmental dimensions.Expanding beyond the familiar realm of Liquified Natural Gas (LNG), the book casts a wider net to explore energy carriers like hydrogen, ammonia, methanol, dimethyl-ether, and formic acid. It doesn't just identify the problem but proposes practical solutions underpinned by comprehensive research and sensitivity analysis, thereby revealing the dynamics of sustainability across various energy carriers.Authored by seasoned professionals in the energy sector, this book combines academic rigor with real-world insights. It is an invaluable guide for industry professionals, researchers, and students, offering a clear roadmap for production, storage, transportation, and utilization of energy carriers more effectively and sustainably.