SINEXCEL’s flagship utility-scale Power Conversion System (PCS), the StellaON 1250K/1575K, has been granted Poland grid certification by TÜV SÜD, with compliance confirmed against RfG:2016, NC RfG:2025 and PTPiREE:2024. The company has also completed official PTPiREE listing, making it among the first manufacturers to secure both certification and listing following Poland’s 2025 grid code update.
This certification validates that a power-generating module can operate safely and reliably on the Polish distribution network, the evaluation covering frequency stability, voltage fault ride-through with fast fault current injection, post-fault active power recovery, remote active power control and reactive power capability. The StellaON series passed all test items with positive results across Type B, C and D module categories. With PTPiREE listing now also in place, the products are fully qualified to serve Polish developers and grid operators, adding to a growing portfolio of European market approvals.
The StellaON series is SINEXCEL’s latest utility-scale PCS, built to maximize project economics through grid-forming, system flexibility and omni-adaptability technologies.
With a focus on lifecycle efficiency and adaptability across diverse environmental, load and grid conditions, the StellaON 1250K/1575K maintains full rated power performance under 55°C, avoiding the efficiency losses and accelerated degradation that conventional equipment suffers in demanding climates. This comprehensive engineering approach enables a significantly lower levelized cost of storage (LCOS), while ensuring maximum uptime across large-scale deployments.
The StellaON series is already proven in the field, having achieved grid connection in Vietnam as part of a2.5 MW/5 MWh BESS project for the Vietnam Electricity Group (EVN). Combined with European certifications including EN 62477, EN 50549 and EN IEC 61000, the Polish Grid approval further solidifies SINEXCEL’s position as a fully certified partner for global energy storage infrastructure.