Energy11, a subsidiary of Ninetech , announced on the 30th that it has begun a full-scale energy storage system (ESS) demonstration project in collaboration with Korea East-West Power based on its own sodium-ion battery technology. This is the first case of domestic sodium battery ESS technology being applied to an actual power grid to verify its performance, and it is expected to play a key role in the expansion of renewable energy infrastructure in the future.
The system installed as part of this demonstration project will be approximately 300KWh in scale, and will primarily evaluate the charging and discharging efficiency of sodium batteries, long-term lifespan, safety, and connectivity with renewable energy. Korea East-West Power emphasized, “This will be an important milestone for strengthening the diversity and self-reliance of the ESS industry,” and “This demonstration is also significant in terms of securing a stable storage method for expanding renewable energy.”
Sodium batteries are evaluated as a storage technology that can efficiently manage the volatility of renewable energy because they are easier to secure resources than lithium and have excellent cost competitiveness. Energy 11 has been working on the development of sodium battery technology on its own for several years and has secured the ability to design and produce the entire cycle from cells to modules. Through this, it has solved the problem of lithium dependence due to the unstable supply and demand of raw materials and implemented a next-generation battery solution that satisfies both low manufacturing costs and stable operating characteristics.
Energy 11 is currently collaborating with global automakers on sodium-ion battery supply and joint technology development. The project encompasses the development of battery modules for EV platforms and medium- to large-scale ESS systems.
An official from Energy 11 said, “This is an important time to present Korea’s unique battery technology to the market, in addition to the technology concentrated in China’s CATL and others,” and added, “Based on this demonstration, we plan to apply sodium battery-based ESS to various industrial fields and sequentially establish overseas certification and mass production systems to respond to global market demand.”
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