GaN power devices have been in volume production for over 13 years with hundreds of millions of transistors and ICs in use in a wide variety of applications. However, GaN technology still has a long way to go before it reaches a state of maturity similar to silicon power devices. In this talk we will discuss the state-of-the-art in GaN-on-Si devices with ratings below 400 V including key applications, and we will show a roadmap for the next 5 years.