Electrification have been recognized as the key to eliminating fossil fuel dependence and paving the way for achieving the 2050 net-zero emission goal. The overarching strategy involves transitioning modes of transportation, including scooters, cars, trucks, buses, airplanes, and ships in to electric power sources primarily fueled by renewable and clean energy. Center to this endeavor are essential technologies such as traction motor drives and battery chargers. In parallel, grid modernization hinges on advanced power conversion technologies such as high-voltage high-power inverters and solid-state transformers, all designed to seamlessly integrate renewable energy source. Today, due to the nature of load in transportation and many other sectors is mostly DC. Consequently, the renewable integration and power distribution system often involve with unnecessary power conversion stages or inefficient power conversion technologies, resulting in substantial energy losses. Given the global electricity capacity exceeding 11 TW, a mere one percent loss translates to a 110-GW, or more than 100 mid-size nuclear power plants capacity. In the early stage of computer industry, the power conversion efficiency hovered in low 70% range. The technology was gradually improved to around 90% range when the super-junction semiconductor became commercially available. Today, with the advent of wide bandgap semiconductor devices, further efficiency improvement is on the horizon. The question is how high can the efficiency achieve. This presentation will introduce advanced high-efficiency power electronics technologies that leverage the latest generation power semiconductor devices to approach near-perfect power conversion. Real-world examples of ultrahigh-efficiency power conversion in EV inverters, fast chargers, PV inverters, and solid-state transformers will be showcased.