New grid battery packs record energy density into a shipping container
Envision Energy announced an 8-MWh, grid-scale battery that fits in a 20-ft (6-m) shipping container this week while at the third Electrical Energy Storage Alliance (EESA)
Shanghai-based Envision Energy has unveiled its latest large-scale energy storage system (ESS), which has an energy density of 541 kWh/m2, the highest in the industry. Prior to this, its Chinese peer battery maker CATL launched its 6.25MWh energy storage system in April, and other companies have also released systems a
Prior to this, its Chinese peer battery maker CATL launched its 6.25MWh energy storage system in April, and other companies have also released systems above 6MWh in 20-foot containers.
In April 2024, Envision Energy introduced the 5.6MWh storage system, the largest in an integrated AC/DC structure. At the exhibition, Envision also showcased its system-level capabilities for new energy systems, including system-level products, technologies, solutions, and services.
The latest generation product has an energy density of more than 440 Wh/l, a roundtrip efficinecy of 96%, and a cycle lifetime of nearly 16,000 charge-discharge cycles. The liquid-cooled system has a voltage range from 1500 V – 2000 V and is configurable for storage durations of two to eight hours. The container weighs around 55 tons.
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