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TWS ProeM Series BEES Cabinets Listed by CEC, Accelerating Its C&I ESS Business Expansion in North America
17/07/2025

Recently, TWS ProeM series liquid-cooling energy storage cabinets have been approved by the California Energy Commission (CEC) and officially listed in its authoritative Solar Equipment Lists. This significant milestone marks the ProeM's full compliance with the stringent performance, safety, and reliability requirements of the California and broader North American markets, laying a solid foundation for TWS Technology to accelerate its expansion into the core market in North America. 


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The CEC-listed ProeM series cabinets are a high-performance energy storage product meticulously designed by TWS Technology to meet the demanding environmental and application scenarios of industrial and commercial users. The series boasts four key advantages: high efficiency & flexibility, safety & reliability, easy installation, and intelligence & user-friendliness. Utilizing advanced liquid cooling technology, it effectively controls battery temperature, ensuring stable system performance under various operating conditions and significantly enhancing the safety and reliability of the energy storage system. Its liquid-cooling design optimizes system structure, markedly increasing energy density, and therefore it provides greater storage capacity within a smaller footprint, saving valuable space for C&I users facing land constraints. The ProeM system integrates multi-level safety mechanisms, including pack-level and system-level fire protection, intelligent thermal runaway warning and suppression, and comprehensive electrical protection. It has passed rigorous certifications, including IEC 62619, IEC 63056, IEC 62477, EN IEC 61000, UL 9540A, UL 1973, and UN 38.3, safeguarding both assets and personnel. Working with a smart Energy Management System (EMS), the ProeM supports intelligent charge/discharge strategy optimization, real-time monitoring, remote operation and maintenance, and seamless integration with photovoltaic systems. This helps users maximize peak-valley arbitrage benefits, reduce demand charges, increase the proportion of green energy usage, and achieve significant economic returns. 


Furthermore, the entire system features a modular design supporting flexible capacity expansion. Its pre-assembled design greatly simplifies on-site installation and subsequent O&M processes, lowering the total cost of its full life cycle. Since its launch, the ProeM has received widespread acclaim from customers and the market, and has been successfully deployed in overseas projects in Germany, the Netherlands, and South Africa, helping industrial manufacturing, agriculture, and municipal sectors achieve their green transition goals.


As a key energy regulatory body in California, the CEC is responsible for setting and enforcing stringent energy efficiency standards. The CEC conducts comprehensive and rigorous assessments of product safety, performance parameters, electrical compatibility, and environmental adaptability. Obtaining a CEC listing signifies that a product not only meets California's strict energy efficiency and safety requirements but is also legally eligible for sale, installation, and qualification for relevant incentive programs within the state.


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The successful listing of the ProeM represents not only high recognition of its exceptional quality and reliability by an authoritative international body but also enables end-users to effectively reduce investment costs and enhance project economics. For TWS Technology, this achievement is more than just an important credential for entering the US and global energy storage markets; it is a crucial step in elevating the brand's international influence and strengthening its market competitiveness, marking a significant breakthrough in its internationalization strategy. Moving forward, TWS Technology will leverage this milestone to intensify R&D investment, continuously improving product performance and quality. Concurrently, TWS Technology will accelerate the deployment of localized service networks to provide North American customers with superior products and service experiences, contributing to the development of the global green energy industry.


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