Sineng Electric Secures CEI 0-21 Certification for Residential All-in-One Solution

Munich, Germany, May 13, 2025 – Sineng Electric is proud to announce that its residential all-in-one solution has been officially awarded the CEI 0-21 certification by DEKRA, a global leader in testing, inspection, and certification services. It affirms the compliance of Sineng's energy solution with Italy's grid connection requirements. The certification ceremony was held during Intersolar Europe 2025 in Munich, Germany, and was attended by senior executives from both DEKRA and Sineng Electric, symbolizing a pivotal step in Sineng Electric's strategy to expand its footprint across the European market.

Sineng's residential all-in-one solution integrates a 5–15kW three-phase hybrid inverter with high-performance home battery. Utilizing 335Ah automotive-grade blade battery cells, each pack contains six high-capacity cells and is equipped with DC/DC modules for optimized system balancing. To ensure around-the-clock safety, the system undergoes a comprehensive series of tests—including module puncture, cell puncture, and fire safety tests. Its modular architecture allows for up to four battery packs per rack (25.6kWh) and four racks in parallel. With a rapid 10-millisecond off-grid switching capability, it guarantees an uninterrupted power supply during outages. Engineered for durability, the solution features IP65 protection rating, ensuring reliable operation in both indoor and outdoor environments.

The CEI 0-21 standard sets the technical criteria for connecting low-voltage electrical systems to the Italian public grid, with an emphasis on safety and grid stability. Obtaining this certification required rigorous evaluation to verify the solution's performance and adherence to grid standards.

"This achievement underscores our unwavering commitment to delivering high-quality, grid-compliant energy solutions and further strengthens Sineng Electric's position as a trusted partner in the European renewable energy sector," said Allen Wang, General Manager of Sineng Global Product Solution Center. "We are excited about the opportunities ahead in Italy and across Europe, and we remain dedicated to supporting the region's transition toward a sustainable energy future."

About Sineng

Sineng Electric is the global leading supplier of a comprehensive product portfolio including PV inverters, energy storage inverters, and digital power products.

By establishing four R&D centers and leveraging top-notch resources, Sineng's unwavering commitment to technological innovation has enabled more people to access cost-effective, reliable, and sustainable energy. Known for the engineering excellence, rigorous testing standards, and consistent quality, Sineng ranks among the top four in global PV inverter market share and is recognized as a BloombergNEF Tier 1 power inverter manufacturer.

About DEKRA

For 100 years, DEKRA has been a trusted name in safety. Founded in 1925 with the original goal of improving road safety through vehicle inspections, DEKRA has grown to become the world's largest independent, non-listed expert organization in the field of testing, inspection, and certification. Today, as a global partner, the company supports its customers with comprehensive services and solutions to drive safety and sustainability forward—fully aligned with DEKRA’s anniversary motto, "Securing the Future." In 2024, DEKRA generated revenue of 4.3 billion euros. Around 48,000 employees are providing qualified and independent expert services in approximately 60 countries across five continents. DEKRA holds a Platinum rating from EcoVadis, placing it among the top 1% of the world’s most sustainable companies.