The most significant impact of sodium-ion technology may be not on our roads but on our power grids. Storing clean energy generated by solar and wind has long been a challenge. Sodium-ion batteries, with their low cost, enhanced thermal stability, and long cycle life, are an attractive alternative. Peak Energy, a startup in the US, is already deploying grid-scale sodium-ion energy storage.
Sodium-ion cells’ energy density is still lower than that of high-end lithium-ion ones, but it continues to improve each year—and it’s already sufficient for small passenger cars and logistics vehicles.
The new batteries are also being tested in smaller electric vehicles. In China, the scooter maker Yadea launched four models of two-wheelers powered by the technology in 2025, as cities including Shenzhen started piloting swapping stations for sodium-ion batteries to support commuters and delivery drivers.