By ESS News
Jiangsu Zhongtian Technology Co., Ltd. (ZTT) recently unveiled its latest innovation ENERGRID NA7 liquid-cooled energy storage system with a storage capacity of 7.58 MWh.
The system presented on the 13th Energy Storage International Conference and Expo (ESIE2025) in Beijing earlier this month, is housed in a standard 20-foot shipping container and is designed for a series of applications, including shared energy storage and renewable integration.
The Energrid NA7 has a string-based liquid cooling system and contains ZTT’s itself developed 3S-integrated PCs. It supports 2000 V high-voltage DC input and AC-grid connection, in which a bidirectional DC/AC-Omverter is integrated that condenses the traditional energy conversion process of two to three levels in a single step. This streamlined architecture pushes energy conversion -efficiency above 99%.
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