YESvGaN will establish a new class of vertical GaN power transistors which combines the performance benefits of vertical Wide Band Gap (WBG) transistors with the cost advantages of established silicon technology. These transistors can replace IGBTs and thus reduce power conversion losses in many price-sensitive applications ranging from power supplies in data centers to traction inverters for electric vehicles. YESvGaN covers the development of the required new technology all the way from wafer to application.