Back in August 2024, SAE International—a well-recognized automotive industry organization, launched the J2954 standard. Stipulated for light-duty vehicles, the J2954 standard describes wireless power transfer at up to 11 kW with an efficiency of up to 93 percent.

Looking ahead, SAE J2954 lays the groundwork for “dynamic” wireless charging, which would allow vehicles to charge while in motion. This would enable EVs to receive power continuously as they drive over specially designed roadways equipped with wireless charging infrastructure. Dynamic wireless charging could be a transformative technology, especially for large vehicles, as it could eliminate the need to stop charging breaks entirely. The J2954 standard provides a foundation for this technology by setting guidelines for safe, efficient, and compatible stationary wireless charging, which can eventually be adapted for dynamic applications.

In addition to wireless power transfer from the grid to the vehicle, the SAE J2954 standard paves the way for future versions to support bidirectional charging or Vehicle-to-Grid (V2G) technology. This functionality would allow vehicles to send power back to the grid, contributing to regional energy management. V2G technology is beneficial for grid stability, especially during peak demand periods, and allows EV owners to participate in energy trading or backup power applications. SAE is planning to include requirements for V2G functionality in future updates of the J2954 standard, which will make wireless charging systems even more versatile and valuable to users and grid operators alike.

One of the significant advantages of the J2954 standard is its focus on user convenience. By eliminating the need for physical cables, wireless charging simplifies the process, allowing EV users to charge their vehicles without manual intervention. This is especially beneficial in poor weather conditions or for users who may find plugging and unplugging cables challenging. Wireless charging offers a clean and easy-to-use solution that enhances the EV ownership experience, making it more attractive to a broader range of consumers.

The adoption of SAE J2954 could positively impact both automakers and EV infrastructure providers. Automakers can design their vehicles to be compatible with the J2954 standard, ensuring a wide range of wireless charging stations. This reduces the need for custom charging solutions and simplifies the manufacturing process. For EV infrastructure providers, the standard provides clear guidelines for developing and testing wireless charging systems that will work with multiple vehicle models, helping to expand the network of compatible chargers available to consumers. With the J2954 standard, SAE International has not only standardized wireless EV charging for light-duty vehicles but has also set the stage for a future where EVs can be charged while in motion, transforming how we think about electric transportation. As the technology evolves, J2954 will continue to serve as a reference point for manufacturers, infrastructure developers, and regulators, helping to make EV charging as simple and seamless as possible for users around the world.