Good News! Xiamen HarmoPower Tech Co., Ltd. Wins Bid for China Southern Power Grid Energy Storage Technology Co., Ltd.'s Fast-Connect Mobile Energy Storage Device Technology Research Project

Great news has arrived! Leveraging its deep expertise in flexible energy storage technology and leading product R&D capabilities, Xiamen HarmoPower Tech Co., Ltd. has successfully won the bid for the Fast-Connect Mobile Energy Storage Device Technology Research Project of China Southern Power Grid Energy Storage Technology Co., Ltd. This achievement once again validates the company’s technical strength and industry reputation, marking a key step for HarmoPower in serving the construction of new-type power systems and enabling flexible grid regulation.

I. Project Mission: Solving Seasonal Power Supply Challenges for the Grid

The goal of this research project is to co-develop an innovative, fast-connect mobile energy storage device that features flexible dispatch and rapid grid synchronization.

• Off-peak energy storage: During non-peak hours, the device can be stationed at energy storage power plants, actively participating in grid peak shaving and frequency regulation, thus improving equipment utilization.
• Peak support: During summer and winter peak demand periods, the unit can be rapidly transported by heavy truck to overloaded grid nodes, offering plug-and-play capability to precisely relieve short-term power supply pressure.
• Emergency backup: In scenarios such as grid repair or natural disasters, it serves as a "mobile energy fortress," enabling rapid deployment to ensure power supply in critical areas.

The project imposes extremely high requirements on the mobile energy storage system’s transport safety, rapid response, compatibility with fast-pluggable interfaces, and standardization. It is a cutting-edge initiative addressing the "temporal and spatial mismatch" of power grids and enhancing supply reliability.

II. Technology Leadership: Empowering Mobile Storage with Flexible Innovation

As a national high-tech enterprise and a specialized and sophisticated SME, HarmoPower has always focused on module-level control flexible energy storage technology and deep expertise in complete energy storage system R&D. Winning this bid demonstrates the strong alignment between the company’s core technologies and the project’s needs.

Key advantages of our flexible energy storage technology:

1. Ultimate safety with active protection – Our world-first module-level control technology improves battery management precision by 10 to 100 times compared to conventional systems, fundamentally eliminating risks of overcharge, over-discharge, and thermal runaway, thereby ensuring transport and operational safety in mobile scenarios.

2. High-density integration for flexible mobility – Our mature, high-energy-density containerized integration solution accommodates large power and capacity in a standard container. The product has passed over 2,500 km of road testing and rigorous vibration/environmental tests, adapting to complex road conditions and varied operating environments.

3. Efficient conversion with plug-and-play capability – Relying on flexible power conversion technology, the system offers efficient, wide-voltage-range grid-connection capability, enabling fast interface and millisecond-level response – perfectly matching the "fast-connect" mobile energy storage core requirements.

III. Partnering with a Central SOE: Building a New-Type Power System

This deep collaboration with China Southern Power Grid marks another major milestone for HarmoPower, following its work with other central SOEs such as China Energy Engineering Group, China Huaneng Group, PowerChina, and China Baowu Steel Group. The company will leverage its technological innovation and energy storage system design strengths to establish a dedicated project team, completing the R&D and trial production with high standards and quality, providing safe, efficient, and flexible mobile energy storage solutions for the grid, and supporting the construction of a new-type power system dominated by renewable energy.

IV. Forging Ahead: Making Clean Energy Accessible Everywhere**

HarmoPower remains committed to the mission of "leading a high-renewable green future." The company continues to advance flexible energy storage, with cumulative delivered energy storage systems exceeding 1 GWh. Its technologies and products have been successfully applied in several national key projects.

Winning this China Southern Power Grid project is both an honor and a responsibility. Moving forward, HarmoPower will keep driving innovation, constantly pushing the boundaries of energy storage technology, and providing safer, more efficient, and more flexible energy storage products and services to empower the grid, power sources, and user sides, contributing core strength to the national "dual carbon" goals.

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V. Proven Track Record: 4.17MWh Mobile Energy Storage Product

As early as 2025, HarmoPower had already deployed its first 4.17MWh mobile energy storage project in Hebei Province. This mobile storage system adopts third-generation flexible energy storage technology and offers the following core advantages:

1. 2MW / 4.17MWh power and capacity in a standard 20‑foot container industry-leading energy density.

2. Over five months of continuous operation and more than 8,000 km of actual road testing, having passed rigorous vibration and environmental tests for diverse complex mobile scenarios.

3. Module-level flexible architecture with multi-layered safety design , effectively preventing overcharge and over-discharge.

4. System round‑trip efficiency stable at 87%–90% , balancing economic performance with efficient operation.