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SINEXCEL Introduces the StellaON 1250K/1575K: A Game Changer for Energy Storage in Europe

SINEXCEL has made significant strides in the energy storage sector with the launch of its PCS StellaON 1250K/1575K at the Intersolar Europe 2026 conference. This groundbreaking product aims to enhance utility-scale energy storage capabilities across Europe, addressing the increasing demand for reliable and efficient energy solutions.

Meeting the Challenges of Modern Energy Needs

Designed with exceptional versatility, the StellaON system addresses the stringent environmental conditions, stability requirements, and overall lifecycle costs associated with energy storage installations. Utilizing components from Infineon, this new solution is engineered to maximize the value of stored energy, thereby promoting sustainability in energy management.

Key Features of the StellaON 1250K/1575K

The StellaON series boasts several innovative features designed to ensure optimal performance even in challenging environments.

• - Omni-Adaptability Design: This concept ensures that the system operates reliably under varying climatic conditions and with high load demands. It employs EconoDUAL™3 modules from Infineon, allowing the system to maintain full continuous output power even at ambient temperatures of 55°C—10°C higher than most competitors. This prevents power restrictions of 15-20%, reducing oversizing costs by up to 20%.
• - Robust Construction: The StellaON features an IP65 rated enclosure and C5 corrosion resistance, making it suitable for extreme weather conditions and urban installations where noise levels must adhere to strict regulations (only 65 dB).

Additional functionalities include grid-forming capabilities to meet the evolving specifications of European grid operators. The system supports multiple operational modes such as PQ, VF, VSG, and SVG, enhancing its adaptability across various use cases. Furthermore, it offers impressive overload capacities of 1.5 times the rated power for up to 60 seconds—superior to the industry standard of 1.2.

Lifecycle Efficiency and Operational Savings

One of the standout features of the StellaON is its impressive lifecycle efficiency, achieving 98.5% at full load. The design allows for customizable storage durations ranging from one to up to eight hours, facilitating scalability from a 2.5 MW medium voltage station housed in a 20-foot container to 12.5 MW in a 40-foot container.

To further reduce operational expenses, the system incorporates an innovative self-cleaning mechanism, resulting in a 15% decrease in lifecycle operational costs. The StellaON system also boasts a mean time between failures (MTBF) exceeding 300,000 hours, promising a remarkable system availability of up to 99%. Replacing critical components can be accomplished in under one hour and the entire PCS converter can be serviced in less than two hours, resulting in minimal downtime.

Validation Through Successful Deployment

The StellaON has already demonstrated its reliability in commercial operations, having successfully connected to the grid in Vietnam earlier this year. With orders totaling over 500 MW in the first half of 2026, it is undergoing deployment in over 15 projects across Europe and the Asia-Pacific region.

The product complies with grid codes in various European countries, including Germany, Poland, the Netherlands, Belgium, and Romania. Certification for use in Spain and the USA is currently in progress, further solidifying its status as a key player in the energy storage market.

Conclusion

Founded in 2007, SINEXCEL has become a pioneer in energy storage systems, electric vehicle charging solutions, and initiatives aimed at delivering high-quality energy access. With a track record of implementing energy storage systems totaling 17 GW and developing 200,000 EV chargers, SINEXCEL is committed to advancing energy freedom through innovative technology like the StellaON series.