"From Vehicles to Power Systems: GM Expands Sodium-Ion Battery and ESS Applications"

Robust Sodium-Ion Batteries for Repeated Charging and Discharging
Building Efficient Energy Storage Systems

General Motors (GM) is expanding the application of its battery technology beyond electric vehicles (EVs) to include power grids and energy storage, introducing a new battery strategy that connects battery systems to external power infrastructures. As electricity demand surges due to the proliferation of artificial intelligence (AI) data centers and electrification, the company is now focusing on energy storage technologies.

According to industry sources on July 1, GM unveiled its energy ecosystem expansion strategy at the recent 'GM Empower' event held in San Francisco, USA, outlining plans to connect EVs to the power grid. GM introduced its next-generation sodium-ion battery development for grid-scale energy storage systems (ESS) and shared plans to utilize second-life batteries. The company emphasized a direction that extends its battery technology to power systems beyond vehicles.

This move is an extension of GM's ongoing battery strategy. GM has pursued a “right battery for the right application” approach, applying the optimal battery chemistry depending on usage scenarios.

While battery energy density, lightweight construction, and driving performance are critical for EVs, operational stability and cost efficiency—enabling long-term, reliable power storage and supply—are even more important for ESS. Sodium-ion battery technology, in particular, is drawing attention in this context. GM is developing next-generation sodium-ion batteries for grid-scale ESS, expanding the use of its battery technology beyond vehicles to external power systems.

Sodium-ion batteries are considered a next-generation solution for grid-scale ESS, as they perform well under various temperature conditions, withstand repeated charging and discharging cycles, and have the potential to reduce cooling requirements and system complexity.

In the ESS sector, GM is taking a different approach from its vehicle battery business. By improving the safety and durability of battery cells, the company expects to reduce the need for additional equipment such as cooling systems and to build simpler, more efficient energy storage systems.

GM is also expanding the use of second-life batteries—batteries previously used in vehicles that are repurposed as energy storage devices. This approach extends the lifecycle of batteries and increases resource utilization. Such a strategy leverages batteries not just as vehicle components but as assets for the power infrastructure.

GM, in collaboration with Redwood Materials, is applying approximately 10,000 GM batteries to energy infrastructure projects and is utilizing these batteries in the power systems of AI data centers in Nevada, USA. Beginning next year, the company also plans to build ESS at its Michigan manufacturing facilities using about 100 second-life battery packs.

A GM Korea business unit representative stated, “We are developing EV batteries and grid-scale ESS batteries tailored to their respective uses, building a battery portfolio that addresses the differing needs of vehicles and power grids. Our sodium-ion battery and second-life battery strategies are expanding the scope of battery technology from vehicles to energy storage and power infrastructure.”

This content was produced with the assistance of AI translation services.