Whether you are an engineer, an energy policymaker, or an investor, and you hear the term “Energy Strategy,” what immediately comes to mind? Now, if you are not directly dealing with energy or strategy, does the term “Energy Strategy” sound like finding a new way to compete with climate change and protection? Maybe.The book was indeed written for all those who are interested about the subject of energy and related climate effects. Practical examples about how energy strategy design is comparable to a standard business or corporate strategy, how renewable energy production may be fed back into smart electric distribution grids by using the Blockchain technology for controlling the load balancing processes, what kind of wastes and residues may be converted to new primary or secondary products and thus fitting to the circular economy concept, how hydrogen may be produced in an efficient and economic process by using renewable energy from state-of-the-art technology and from new concepts, what is the difference between electric battery and hydrogen driven vehicles and connecting these already well-known concepts to innovative and beyond-state-of-the-art thinking.To facilitate reading and understanding, the book has been divided into four parts:Part a: Energy Strategy ModellingPart b: Guide to Blockchain and Fuzzy logicPart c: Recovering waste energy Part d: Importance to HydrogenHowever, it must be mentioned that the aim of this book is not to cover all scientific details, but it should provide evidence for the way it’s done now, the way we’d suggest, and some alternative ways we might be able to do it. In some cases, we use the FERMI approach for easy approximation, and in other cases we use initial conceptual formulas that of course need to be further developed when models need to be fully designed and implemented in new or existing industrial environments. Because of its interdisciplinarity and its easily kept explanatory texts, this book should be used as a key introduction into and a reference book for energy and energy-related subjects for energy policymakers, undergraduate and graduate studies, engineers, as well as casual readers.