By ESS news
Shanghai-based Envision Energy launched its latest grid-scale energy storage system at the third Electrical Energy Storage Alliance (EESA) Energy Storage Exhibition held in Shanghai this week. The product’s energy density is 541 kWh/㎡, making it the largest in the industry to date.
The product release follows CATL’s launch of the 6.25 MWh energy storage system in April and several other companies launching 6 MWh+ storage systems packaged in a standard 20-foot container, ushering in a new era of energy density for battery energy storage systems.
However, Envision’s latest product far surpasses all previous system-level performance. It packs more than 8 MWh using 700 Ah lithium iron phosphate battery cells made by Japan-based AESC, in which Envision has a majority stake.
“We made a huge leap from the 315 Ah battery cells used in our previous generation products to 700 Ah and we did this to reduce costs at the system level,” a company representative said. ESS news at the Shanghai show.
The latest generation product has an energy density of more than 440 Wh/l, a return efficiency of 96% and a cycle life of almost 16,000 charge-discharge cycles.
The liquid-cooled system has a voltage range of 1500 V – 2000 V and is configurable for a storage time of two to eight hours. The container weighs approximately 55 tons.
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