Successful Completion of World’s Largest High-Capacity Direct-Connected Energy Storage Short-Circuit Test

Global Largest Capacity High-Voltage Direct Grid-Connected Energy Storage Short-Circuit Test Successfully Completed – On April 21, 2025, the State Grid Qinghai Electric Power Company announced a significant achievement in the energy storage sector. Under the guidance of the State Grid Northwest Branch’s Power Dispatch Control Center, the company, in partnership with research institutions and new energy enterprises, successfully conducted the world’s largest capacity high-voltage direct grid-connected energy storage short-circuit test at the Haixi Baoku Energy Storage Power Station. This marks China’s first specialized test for this technology, placing the nation at the forefront of new energy storage technology validation.

Recently, the Zhejiang Regulatory Office of the National Energy Administration released a notice soliciting public opinions on enhancing safety capabilities for new energy and grid-connected entities in Zhejiang Province. The consultation period runs from April 15 to May 15, 2025. The requirements for grid-side energy storage systems operating at voltages of 10 (6) kV and above include emergency control, frequency modulation, active and reactive power control, as well as high and low voltage ride-through functions. Additionally, the systems must meet specific voltage and frequency adaptability criteria.

<b>Industry Developments:</b>
<ul>
    <li><b>CATL Partners with Jinhua Transportation Investment Group:</b> On April 18, CATL signed a strategic cooperation agreement with Jinhua City Transportation Investment Group to accelerate the development of a zero-carbon land port ecosystem, focusing on electric buses, logistics services, and heavy-duty vehicle electrification.</li>
    <li><b>Mingyang Group Launches 35kV 50MW/100MWh High-Voltage Energy Storage System:</b> On April 16, Mingyang Group announced the successful rollout of its first 35kV high-voltage energy storage system, capable of operating in extreme environmental conditions with over 90% long-cycle efficiency.</li>
    <li><b>Industry Adjustments from Keda Intelligent:</b> On April 19, Keda Intelligent announced the termination of its investment collaboration with Ningbo Yuge and Ningbo Bole due to changes in the overseas energy storage market, which had increased inventory pressures and reduced product prices.</li>
    <li><b>Guangzhou Zhiguang Applies for Supercapacitor Pre-Charging Control Patent:</b> On April 19, Guangzhou Zhiguang Energy Technology Co., Ltd. applied for a patent for a supercapacitor pre-charging control method, enhancing the convenience of operations and reducing charging time and energy loss.</li>
    <li><b>Hua Zi Technology Delays Integrated Solar + Storage Project:</b> The company announced on April 20 that it would postpone its industrial park project to December 31, 2026, due to fluctuations in raw material prices and the need for further technological breakthroughs.</li>
    <li><b>New Sodium Battery Project Launched with 20 Billion Investment:</b> On April 19, a new sodium battery project with a total investment of 20 billion yuan officially commenced in Meishan, aimed at producing 50,000 tons of sodium iron sulfate cathode materials and 5 GWh of sodium batteries annually.</li>
</ul>

<b>International News:</b>
<ul>
    <li><b>MW Storage to Optimize Battery Storage Project in Germany:</b> MW Storage announced plans to collaborate with Entrix to optimize a portion of its 100MW/200MWh battery storage system in Arzberg, aiming for commercial operation of 50MW/100MWh by April 2025.</li>
</ul>