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Scientists Discover Way to Send Information into Black Holes Without Using Energy

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China Switches On the World’s First 628Ah Mega-Battery Plant — A New Era for Grid-Scale Energy Storage

China has taken a major step forward in energy storage technology by bringing the world’s first 400 megawatt-hour (MWh) energy storage plant powered by 628 ampere-hour (Ah) battery cells online. Commissioned on January 31, the project is the first real-world, utility-scale deployment of ultra-large 628Ah battery cells, marking a significant milestone for global power grids.

Located in Lingshou County, Hebei Province, this advanced facility is designed to strengthen grid stability, improve renewable energy integration, and demonstrate that next-generation “mega cells” can safely and efficiently operate under real grid conditions.

A First-of-Its-Kind Energy Storage Milestone

The new storage station has a total capacity of 200 megawatts (MW) / 400MWh, meaning it can deliver 200MW of power for two continuous hours. This makes it one of the most powerful battery storage installations in operation today—and the first to rely entirely on 628Ah lithium-ion cells.

The core battery technology was supplied by EVE Energy, a leading Chinese manufacturer known for batteries used in electric vehicles and large-scale energy storage.

According to the company, this project confirms that ultra-large battery cells are not just experimental concepts but ready for real-world grid deployment.

Why 628Ah Cells Matter

Traditional energy storage systems rely on smaller battery cells connected in complex networks. While effective, these designs increase system complexity, raise costs, and add more potential points of failure.

The new 628Ah “mega cells” change this approach:

  • Fewer cells are needed to reach high capacity

  • Simpler system architecture reduces wiring and components

  • Lower operating and maintenance costs

  • Faster installation and deployment

EVE Energy emphasized that these large-format cells meet modern grid demands for high safety, high efficiency, and long service life—three factors critical for large power networks.

Inside the Lingshou Energy Storage Station

The facility, known as the Ruite New Energy Lingshou Energy Storage Station, is equipped with:

  • 80 sets of “Mr. Giant” 5MWh DC energy storage systems

  • 40 integrated power conversion system (PCS) cabins

Together, these systems manage energy storage, conversion, and grid interaction, ensuring stable operation even during fluctuating electricity demand.

The station supports peak shaving, frequency regulation, and backup power—key functions for grids with growing shares of wind and solar energy.

Proven at Scale, Not Just on Paper

One of the most important aspects of this project is that it represents real-world validation, not a lab test or pilot experiment.

EVE Energy revealed that cumulative production of 628Ah cells has already exceeded one million units, demonstrating that the technology is mature and ready for mass deployment.

Company representatives described this as a shift:

“From pioneering exploration to grid-scale validation, laying a solid foundation for high-quality industry growth.”

This large production volume confirms that the cells are not only advanced but also manufacturable at industrial scale.

Safety and Cost at the Core

Large batteries must meet extremely high safety standards. To address this, the system integrates EVE Energy’s inherently safe cell technology combined with a minimalist system design.

Key safety and performance innovations include:

  • Advanced stacking processes

  • High-toughness battery separators

  • Optimized thermal and structural design

These features enhance operational safety while also reducing the Levelized Cost of Storage (LCOS)—a key metric that measures the lifetime cost of storing electricity.

Lower LCOS makes large battery storage more attractive for utilities and governments worldwide.

Strategic Partnership Signals Bigger Ambitions

Alongside the commissioning of the plant, EVE Energy signed a 10 gigawatt-hour (GWh) strategic cooperation agreement with Beijing Guowang Power Technology.

Senior executives, including Zhou Ziguan, Chairman of Beijing Guowang Power Technology, and Steven Chen, Senior Vice President of EVE Energy, attended the launch ceremony.

This agreement moves the collaboration beyond single projects toward long-term, large-scale deployment of mega-battery systems across China.

Supporting Renewable Energy Growth

As China rapidly expands wind and solar power, energy storage has become essential. Renewable energy is clean but intermittent—solar power fades at night, and wind strength changes by the hour.

Large-capacity battery systems like the Lingshou station help by:

  • Storing excess renewable energy

  • Releasing power during peak demand

  • Stabilizing grid frequency and voltage

  • Reducing reliance on fossil-fuel backup plants

This makes battery storage a critical pillar of the low-carbon energy transition.

A Glimpse Into the Future of Energy Storage

Industry experts believe the success of this project will accelerate global adoption of large-format battery cells. As competition shifts from simply building bigger plants to delivering better technology and system value, companies that master safety, cost, and scalability will lead the market.

EVE Energy has stated that it will continue to:

  • Advance large battery technology

  • Expand global manufacturing capacity

  • Strengthen international cooperation

  • Build open energy storage ecosystems

Conclusion: A Global Benchmark Is Set

The commissioning of the world’s first 628Ah, 400MWh energy storage plant is more than a national achievement—it sets a global benchmark for grid-scale battery systems.

By proving that ultra-large cells can operate safely, efficiently, and economically in real grid conditions, China has opened the door to a new generation of energy storage infrastructure. As renewable energy continues to grow worldwide, projects like this will play a crucial role in delivering stable, reliable, and low-carbon electricity for the future.

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