Guangzhou Zhiguang Energy Storage Technology Co., Ltd. continues to lead the large-scale cascaded high-voltage direct-connected (CHVDC) energy storage sector. Leveraging its proprietary core CHVDC energy storage systems, the company has achieved large-scale deployment across a full range of application scenarios, including grid-side standalone energy storage, renewable energy integration, source-grid-load-storage integration, integration with next-generation batteries, and power ancillary services.
With projects deployed across multiple regions in Northwest and South China, Zhiguang Energy Storage has surpassed 15 GWh in cumulative installed capacity of cascaded high-voltage direct-connected energy storage. The company has achieved rapid business growth and established a leading position in this technology segment in China.
As a pioneer and leader in large-scale cascaded high-voltage direct-connected energy storage technology, Zhiguang Energy Storage has been deeply engaged in high-voltage power electronics for many years. Its products can be directly connected to 6 kV–35 kV high-voltage grids without the need for step-up transformers. They feature strong grid-forming capabilities and support weak-grid adaptation, islanded operation, one-click black start, and millisecond-level rapid response. The systems can operate reliably across a wide temperature range from -40°C to 45°C and are fully compatible with diverse grid conditions across China, providing a robust technological foundation for the development of the new power system.
Backed by reliable product performance and mature engineering capabilities, the company’s solutions are widely deployed by State Grid, China Southern Power Grid, and major state-owned energy enterprises, with continued growth in market recognition and industry penetration.
Grid-Side Standalone Energy Storage
In the grid-side standalone energy storage sector, the 200MW/800MWh grid-forming energy storage project in Minfeng County, Hotan, Xinjiang, has achieved stable full-capacity grid connection. It is a benchmark project for large-scale grid-forming cascaded high-voltage energy storage in China.
The project effectively smooths fluctuations in renewable power generation, addresses the operational challenges posed by weak grids in Northwest China, and helps ensure the security and stability of the power grid in southern Xinjiang. It delivers approximately 280 million kWh of clean electricity annually, providing strong support for renewable energy integration and grid voltage stabilization in the northwestern Gobi region.
Supporting Large-Scale Renewable Energy Bases
In the supporting infrastructure for large-scale renewable energy bases, Zhiguang Energy Storage is deeply involved in the development of major wind and solar power bases in Northwest China, addressing key challenges associated with the intermittency and volatility of renewable generation and renewable energy curtailment.
The 132MW/264MWh grid-forming energy storage project in Wujiaqu, Xinjiang, is located in the core renewable energy development area on the northern slope of the Tianshan Mountains. Supporting an 880 MW photovoltaic array, the project can provide approximately 1.4 billion kWh of clean electricity annually, save approximately 440,000 tonnes of standard coal, and reduce CO? emissions by approximately 1.4 million tonnes. It establishes a green industrial loop based on coordinated wind, solar, and energy storage development, supporting the large-scale and high-quality growth of renewable energy in Northwest China.
Source-Grid-Load-Storage Integration
In the field of source-grid-load-storage integration, Zhiguang Energy Storage focuses on the needs of industrial parks and energy-intensive enterprises, developing integrated energy hub solutions that enable coordinated optimization and dispatch of photovoltaic generation, energy storage, and loads. These solutions help enterprises increase the use of green electricity, reduce peak demand, shift electricity consumption to off-peak periods, and ensure emergency power supply.
The over-1GWh grid-forming energy storage project at Chuangyuan Metal in Inner Mongolia completed the world’s first black-start test combining a grid-forming cascaded high-voltage direct-connected energy storage system with a coal-fired generating unit. The project was selected as an outstanding energy storage demonstration project in Inner Mongolia.
Power Frequency Regulation and Ancillary Services
In the power frequency regulation market, Zhiguang Energy Storage has established a strong presence in Guangdong’s ancillary services market and developed a number of benchmark projects.
The Qingyuan Qingcheng standalone energy storage power station adopts the company’s proprietary liquid-cooled cascaded high-voltage direct-connected technology. It is Guangdong’s first GWh-scale standalone energy storage project and has maintained a leading level of market profitability over the long term.
The technology can simultaneously support multiple functions, including frequency regulation, peak shaving, electricity spot-market trading, and grid support, enabling multiple revenue streams from a single system. This helps diversify market exposure and aligns with the evolving trend toward market-oriented electricity reform across China.
Integration with Next-Generation Battery Technologies
In the field of next-generation battery integration, the company is actively exploring the commercial deployment of advanced energy storage technologies and driving cross-disciplinary innovation.
The 145 MW/290 MWh Guangdong Huadian Shanwei energy storage project is the first 100 MW-class semi-solid-state battery energy storage demonstration project designated by the National Energy Administration. It is also China’s first frequency-regulation-oriented standalone energy storage power station integrating cascaded high-voltage direct-connected technology with semi-solid-state batteries.
The project successfully established an engineering and commercialization pathway for next-generation battery technologies and contributes to the safe and stable operation of the power grid in the Greater Bay Area.
Technology-Driven Brand and Capability Enhancement
Driven by technological innovation, Zhiguang continues to strengthen its brand and technical capabilities. As of June 30, 2026, Zhiguang Group held more than 1,100 patents and software copyrights and had led or participated in the formulation of more than 120 national, industry, and association standards.
The company has received numerous major national and industry awards, including First Prize in the Energy Storage Technology Innovation Challenge organized by the Ministry of Industry and Information Technology, First Prize of the Technology Invention Award of the Chinese Mechanical Engineering Society, and First Prize of the Technology Invention Award of the China Power Supply Society. These honors demonstrate the originality and advanced nature of Zhiguang’s core cascaded high-voltage direct-connected energy storage technologies.
The company has been recognized as a National-Level Specialized and Innovative “Little Giant” Enterprise, a leading enterprise in energy storage technology within Guangdong’s new energy industry, and a chain-leading enterprise in Guangzhou’s strategic industrial cluster for new energy and new-type energy storage. It has also been recognized as an advanced intelligent factory.
Its projects have been included in the Ministry of Industry and Information Technology’s Recommended Catalogue of Energy-Saving and Carbon-Reduction Technologies and Equipment and selected as among the first batch of energy storage pilot and demonstration projects for technological innovation by the National Energy Administration. The company has also appeared on the BloombergNEF (BNEF) Global Energy Storage Tier 1 list multiple times, further strengthening its influence across the industry.
Advancing the Next Generation of Energy Storage
Standing at a new starting point for the high-quality development of the new-type energy storage industry, Zhiguang Energy Storage will continue to advance grid-forming cascaded high-voltage direct-connected energy storage technology, deepen its presence across diverse energy storage application scenarios, and accelerate innovation in both technology and business models.
With advanced energy storage technologies and capabilities, Zhiguang Energy Storage is committed to supporting the development of the new power system and contributing to the achievement of China’s “Dual Carbon” goals.
