This book outlines the developments taking place in the energy sector. The main focus remains on hydrogen, but a discussion on the other en-ergy sources that exist provided a comparative analysis on the possibil-ity of use of hydrogen globally. There is adequate evidence that the trend is positive towards the use of hydrogen as energy in the industries and households because of the many advantages associated with it. The disadvantages are, to a larger extent, being worked on to ensure it is universally adopted for use. Threats of climate change to human surviv-al are the main drivers to innovation, as well as the distribution of the source of hydrogen, despite the location of the technologies in fewer parts of the globe. This book discusses the evolution of hydrogen, tech-nologies and methods being used in its manufacture, as well as existing challenges and breakthroughs.
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