Huawei and SchneiTec Launching World's First TÜV SÜD-Certified Grid-Forming Energy Storage Project

Innovative Project Marks a Milestone in Energy Transition

On June 17, 2025, Huawei Digital Power announced the operational launch of the world’s first TÜV SÜD-certified grid-forming energy storage project in Cambodia, in collaboration with SchneiTec. This groundbreaking initiative marks a significant advancement in the country's efforts towards achieving a sustainable energy future.

The completed energy storage project has a capacity of 12 MWh and includes a testing bench of 2 MWh that validates Huawei's Smart String energy storage system technology. This system has showcased exceptional network stabilization capabilities in both off-grid and low network scenarios, enabling seamless integration of intermittent renewable energy sources. TÜV SÜD’s certification highlights the project's successful implementation and adherence to rigorous international standards.

Project Details and Technical Achievements

The energy storage system is designed to address various challenges faced by the energy sector, including voltage fluctuations, surge resistance, and autonomous recovery during outages. During the project testing phase, TÜV SÜD collaborated with SchneiTec and Huawei to put the Smart String technology through comprehensive evaluations:

1. Inertia Response: The system demonstrated outstanding inertia response capabilities, achieving inertia time constants (Tj) between 3 and 20 seconds, which surpass the standard requirements of 3 to 12 seconds. This allows for quicker stabilization of the grid during variability in power supply.

2. Surge Resistance: The energy storage solution efficiently handled voltage fluctuations, ensuring network stability even during short-duration voltage drops and surges. It maintained operational stability over a wide voltage range, from 5% to 130% of the nominal grid voltage.

3. Overload and Frequency Support: It operated reliably even under short-term overload conditions of up to 300% and effectively suppressed low-frequency oscillations within the range of 0.2 Hz to 5 Hz.

4. Autonomous Startup: The technology allows for rapid autonomous startup under load conditions, facilitating efficient network recovery following a complete outage.

These findings underscore the significance of the project in setting a high benchmark for energy management and stability globally. The TÜV SÜD certification not only validates the technology's compliance with internationally recognized standards but also reflects Huawei's commitment to technological innovation and the energy sector’s evolution.

Future Outlook for Renewable Energy in Cambodia

The successful partnership between Huawei Digital Power and SchneiTec exemplifies a concerted effort in transitioning Cambodia towards renewable energy sources. With the alignment of their goals and the launch of innovative solutions, this project sets a robust foundation for future expansions and the development of a large-scale energy infrastructure.

As Cambodia embarks on its renewable energy roadmap, Huawei Digital Power plans to continue fostering innovation. The company aims to implement stable, scalable, and reliable energy solutions to meet the growing demand for sustainable electricity in the region while enhancing Cambodia's energy infrastructure.

Through this pioneering project and collaboration, Huawei Digital Power and SchneiTec are poised to play a pivotal role in the region’s shift towards a greener energy future. With increasing investment in renewable technologies, Cambodia is taking significant strides towards sustainability, ensuring that its energy landscape is both resilient and environmentally friendly.