This book covers the progress made in the area of wide bandgap semiconductor (WBG) technologies, in particular SiC, with a strong emphasis on their applications torapidly progressing areas such as automotive, aerospace and the whole electrical energy sector. The book is unique in its blend of device functionality and capabilities, technology road maps, as well as addressing the important aspects of real-life applications of these emerging devices. The benefits offered by wide bandgap material devices is enormous, and in the era of more electrification of transport and reformation of the whole energy supply chain this is set to be one of the key defining technologies over the next few decades that will support the whole eco-structure of society in the 21st century, much as silicon has done over the last half of the 20th century.