Due to the increasing concerns over safety, stability, and grid compliance in the commercial and industrial (C&I) energy storage market, GSL ENERGY launched its new-generation 125kW/261.2kWh C&I energy storage system – the CESS-J125K261 – which has now officially obtained CE EMC (Electromagnetic Compatibility) certification. This milestone proven the product's compliance with the market in Europe and other markets.
According to the certification documents, the CESS-J125K261 passed testing with the following standards:
EN IEC 61000-6-2:2019 (Immunity for industrial environments)
EN IEC 61000-6-4:2019 (Emission limits for industrial environments)
This certification complies with the requirements of the EU EMC 2014/30/EU. It verifies the system's integrated performance in complex C&I electrical environments, ensuring stable operation without interfering with other equipment while maintaining good immunity. This provides compliance assurance for project grid-connection, campus deployments, and the coordinated operation of multiple devices.
The CESS-J125K261 features systematic optimization in power density and system integration. Key specifications include:
Rated Energy: 261.2 kWh
Rated Output Power: 125 kW
Battery Rated Voltage: 832V (Voltage Range: 728–936V)
Rated Output Current: 180A
Grid Voltage: AC 400V
Connection Method: 3P 3W+PE / 3P 3W+N+PE
The high-voltage architecture design effectively reduces system losses. It improves overall energy efficiency, making it particularly suitable for typical applications such as factories, commercial parks, data centers, public facilities, and distributed energy projects.
The product adopts an integrated industrial-grade energy storage battery cabinet design, with a core focus on replicability and scalable deployment:
Modular high-voltage battery system enhances consistency and reliability.
Structural design tailored for C&I scenarios facilitates on-site installation and future maintenance.
Compatible with various energy management strategies, supporting peak shaving, backup power, and energy dispatching.
Factory assembled and testing processes further reduce on-site project construction and commissioning costs, improving overall delivery efficiency.
CE EMC certification is not only the foundation for product compliance but also showcasing our capabilities. The completion of certification for the CESS-J125K261 signifies that the product now possesses:
Market access conditions for Europe and countries adopting the CE framework.
Support for EPC projects, C&I energy storage projects, and channel distribution.
A foundation for subsequent multi-country regulatory expansion and customized certification.
Leveraging a mature manufacturing system and project experience, GSL ENERGY continues to provide partners with stable, replicable, and scalable C&I energy storage solutions.
This launch and successful certification of the CESS-J125K261kWh battery demonstrate GSL ENERGY's comprehensive capabilities in high-power energy storage system design, regulatory understanding, and engineering delivery.
Looking ahead, GSL ENERGY will continue to focus on safety standards, system reliability, and scenario adaptability to promote the large-scale application of C&I energy storage in more countries and industries.