China’s Sungrow has introduced its latest innovation—the PowerStack 255CS, a liquid-cooled battery energy storage system (BESS) designed specifically for commercial and industrial (C&I) applications. Unveiled at the Global Renewable Energy Summit 2025 in China, the system targets longstanding deployment challenges in the C&I sector, offering a compact and highly scalable solution.
The PowerStack 255CS integrates a power conversion system (PCS) with a three-phase design, battery management system (BMS), and energy management system (EMS) into a unified enclosure, significantly improving installation and operation. It features Sungrow’s innovative grid-forming technology, ensuring stability even in complex grid environments, as well as off-grid operation, supporting 100% unbalanced loads without the need for external transformers.
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