On June 16, 2025, Cambodia ushered in a major event in the energy field: Huawei Digital Energy and local energy leader SchneiTec jointly announced the official completion of the country's first energy storage power station. This milestone cooperation not only injected strong kinetic energy into the optimization of Cambodia's energy structure, but also set a successful example of deep integration of renewable energy and cutting-edge technologies on a global scale.

A new milestone in energy storage, energy adds vitality

The energy storage project has a total capacity of 12MWh, of which 2MWh has a special mission, which is used to verify the stability effect of Huawei's intelligent tandem energy storage technology on the power grid in complex scenarios such as off-grid and weak power grid, and realize the smooth output of intermittent renewable energy. The successful application of this technology is like installing a "stabilizer" in Cambodia's energy network, which effectively solves the problem of instability of renewable energy power generation. What's more remarkable is that the project has successfully obtained the authoritative certification of TV Nande, becoming the first grid-type energy storage project in Cambodia and the first large-scale electric energy storage system in the world that has won the certification of TV Nande's grid-type capability. Behind this certification is the high recognition of Huawei's networking technology in global energy management and power grid stability standards.

Hard-core technical strength to ensure power grid stability

The project test was jointly completed by TV Nande, SchneiTec and Huawei Digital Energy. The test results fully demonstrate the hard-core strength of Huawei's intelligent tandem networked energy storage in many key fields.

In terms of inertia, the inertia response of Huawei's networking technology is excellent. The time constant of inertia Tj3 can reach 3-20 seconds, which is far beyond the range of Tj3-12 seconds required by the standard, and can provide support for power grid stability more quickly. When the power grid encounters an unexpected situation, such as instantaneous power fluctuation or abnormal voltage, this technology can respond quickly, effectively prevent the expansion of power failure and ensure the normal operation of the power grid.

In terms of high and low voltage ride-through performance, the energy storage system has excellent ability to control voltage fluctuation. Even in extreme cases such as short-term voltage sag and surge, it can still ensure the stable operation of the power grid. The test data show that the system can run stably in the range of 5%-130% rated voltage, showing strong adaptability and stability. This means that the energy storage power station can work reliably in the complex and changeable power grid environment in different parts of Cambodia, providing continuous and stable power supply for local users.

Facing the challenges of overload and frequency support, Huawei's reticulated energy storage also performed well. Under the overload condition of up to 300%, the system can run stably and reliably for a short time, and at the same time, it can effectively suppress the low-frequency oscillation of the power grid in the range of 0.2Hz-5Hz. This powerful overload tolerance and oscillation suppression ability greatly improve the stability and reliability of the power grid. The energy storage system can respond quickly, maintain the stability of power grid frequency and avoid power grid failure caused by low-frequency oscillation in the case of sudden increase of power grid load caused by high-power equipment startup during peak power consumption or industrial production.

The black start ability is a highlight of Huawei's network construction technology. This technology strongly supports the power grid to realize fast black start under load operation. When the power grid is completely paralyzed by catastrophic failure, Huawei's networked energy storage system can restore power supply to the power grid in a short time, greatly reducing the power outage time and reducing the losses caused by power outage to social economy and residents' lives. For example, after a large-scale power outage caused by natural disasters, the system can be started quickly, giving priority to ensuring the power supply of key infrastructure such as hospitals and transportation hubs, and providing key support for social emergency recovery.

This test is a strict and independent verification of the networking technology, marking the first time that the networked energy storage has passed the on-site demonstration overseas, and fully conforms to a series of international authoritative standards such as IEC, GB, British power grid code and German VDE. This achievement is not only an important milestone in Huawei's digital energy development, but also sets a benchmark for technological innovation in the entire energy industry, providing valuable experience and feasible solutions for global energy transformation and power grid stability improvement.

Work together to deepen energy and build a green future.

Looking back on the development of SchneiTec, as a local energy leader in Cambodia, it joined hands with Jingke Energy in 2018 to build a 60 MW solar photovoltaic power station in Kampong Speu province, Cambodia. The project was approved by the Cambodian Development Council in early November 2018, installed in January 2019, and officially put into operation in December 2019, becoming an important pillar in Cambodia's energy field. Today, SchneiTec and Huawei Digital Energy have once again joined hands to build Cambodia's first energy storage power station, which is undoubtedly a further expansion and deepening of their deep-rooted achievements in the energy field, and also a strong combination of their technologies and experiences in the field of renewable energy.

The steady progress of Cambodia's clean energy plan has provided a broad stage for Huawei's digital energy. With continuous technological innovation, Huawei will provide local flexible and reliable energy solutions to meet the growing demand and promote the upgrading of its energy infrastructure. More importantly, this successful practice provides a valuable reference for the global energy transformation, and will certainly inspire more participants to join the wave of renewable energy and work together to build a clean, efficient and stable world energy future. (This article is from Daodao www.seetao.com, official website. It must not be reproduced without permission, otherwise it will be investigated. Please indicate Daodao.com+original link for reprinting.) See the editor of the Belt and Road column of Daodao.com/Yin Jiahui