General Motors is making a significant wager on sodium-ion battery technology as it looks to reshape its energy business and capture Wall Street’s attention.
GM created GM Energy back in 2022, but the division has failed to generate the kind of investor excitement that rival Ford recently enjoyed following a similar energy announcement.
The key differentiator in GM’s strategy is its new partnership with energy storage startup Peak Energy, focused on sodium-ion battery chemistry for grid-scale deployments.
Outside of China, no other automaker has announced plans to build sodium-ion cells, giving GM (GM) a potentially distinctive position in the emerging grid storage market.
Sodium-ion batteries operate similarly to lithium-ion cells but swap out key materials to make them cheaper, longer lasting, and less prone to overheating during operation.
The primary tradeoff is that sodium-ion batteries must be larger and heavier than lithium-ion equivalents to store the same amount of electricity, making them less practical for vehicles.
Peak Energy has already developed grid-scale storage systems specifically engineered around sodium-ion chemistry, which behaves differently from traditional lithium-ion technology in important ways.
Because sodium-ion cells carry a lower overheating risk, Peak’s systems eliminate cooling and fire suppression infrastructure, reducing both upfront costs and long-term maintenance expenses.
GM’s dedicated battery labs are optimizing this chemistry for stationary applications that prioritize, in the company’s words, “long-term chemical endurance and thermal dynamics — applying the right battery architecture to the right application, on the road and on the grid.”
Beyond the Peak Energy partnership, GM is also expanding vehicle-to-grid capabilities for its EV customers, allowing vehicles to supply power back to the electric grid when needed.
The company is additionally continuing work on repurposing large EV batteries for energy storage systems alongside companies such as Redwood Materials, extending the useful life of retired battery packs.
GM is also producing lower-cost lithium iron phosphate battery cells through an existing joint venture with LG Energy Solution, broadening its overall battery chemistry portfolio.
Where GM talks about orchestrating millions of batteries on both sides of the meter, from sodium-ion containers at substations to Escalade IQs in driveways, Ford is taking a more traditional industrial approach as a made-in-America supplier of standard battery blocks.
Both automakers have identified data centers, renewable energy integration, and grid resilience as their primary growth markets, and both are racing to secure their first major contracts.
GM has committed $900 million to commercialize new battery chemistries, an investment that also includes the construction of a new battery development center.
Sodium-ion battery production is currently underway with a separate supplier, but GM expects to be manufacturing its own sodium-ion cells by 2028.
