From ESS News
Japanese manufacturer Sumitomo Electric has released a new vanadium redox flow battery (VRFB) suitable for a variety of long-duration configurations.
Unveiled at Energy Storage North America (ESNA), held in San Diego from Feb. 25–27, 2025, the system applies “newly developed long life materials” which allows for a 30-year operational lifespan. Such a lifespan, which is subject to proper maintenance, enhances the system’s long-term cost effectiveness, the manufacturer said.
Long operational lifespan is one of the key advantages of VRFBs, in addition to its high recyclability and strong safety credentials. In VRFBs, energy capacity (liquid electrolyte ) and power output (cells) are decoupled and can be scaled separately. This design also reduces wear and tear on components, which contributes to a longer operational life.
Sumitomo said that compared to previous models, the new system achieves a 15% increase in energy density, reducing the physical footprint. Furthermore, the new VRFB is said to “reduce the overall costs by 30% through optimized system design, improved electrolyte circulation control, and enhanced manufacturing processes”.
The system comes in three versions with six, eight and ten hours of storage duration. The six-hour system is housed in a 40-foot container and offers 2 MWh of capacity. It rated power output is AC 334 kW.
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