EVE Energy achieves world’s first 400MWh energy storage project with 628Ah ultra-large cells

EVE Energy Co., Ltd. (SZSE: 300014) has reached a defining milestone in the evolution of grid-scale energy storage by successfully deploying the world’s first 400MWh project using 628Ah ultra-large lithium-ion cells. Connected at Phase II of the Ruite New Energy Project in Lingshou, Hebei Province, the project underscores the growing industrial readiness of big-battery systems and signals that the large-cell era has officially arrived for commercial energy storage applications.

Why the use of 628Ah ultra-large cells marks a turning point for the global energy storage sector in 2025

For years, the scaling of lithium-ion battery technology has been constrained by the balance between energy density, cost, safety, and performance. While cells in the 200Ah to 300Ah range have dominated utility-scale energy storage systems, the deployment of EVE Energy’s 628Ah cell technology represents a significant leap. Larger cells enable higher energy density per module, fewer components, and lower system-level costs.

The 200MW/400MWh standalone project in Lingshou, jointly developed with State Grid Power Technology, is the first-ever demonstration of 628Ah batteries at the 100MWh level. In a global landscape where grid operators are under pressure to integrate record amounts of renewable energy, this project shows how ultra-large cells could lower the levelized cost of storage and improve system reliability.

Industry analysts have been quick to note that this positions EVE Energy at the forefront of China’s battery manufacturing sector, a space historically led by Contemporary Amperex Technology Co. Limited (CATL) and BYD. The successful grid-connection of such a project shows that EVE Energy can not only innovate in R&D but also scale complex technologies into commercially viable deployments.

How rapid deployment of 628Ah cell projects demonstrates EVE Energy’s operational maturity and global scalability

The most striking aspect of the Lingshou Phase II project is its speed of deployment. According to company disclosures, EVE Energy delivered and grid-connected 80 Mr.Giant energy storage systems and 40 integrated converter cabins in just one week. Achieving that level of logistical coordination requires tight integration between R&D, manufacturing, supply chain management, and on-site commissioning teams.

This kind of operational maturity is not merely about technical delivery. Investors often view rapid deployment capability as a proxy for scalability and project repeatability—two of the most important factors when valuing companies in the energy storage sector. As demand for 4+ hour long-duration systems accelerates across Asia, North America, and Europe, companies that can shorten commissioning timelines are likely to command stronger pricing power and deeper institutional interest.

From a financial perspective, EVE Energy’s 2024 revenues exceeded RMB 40 billion, with gross margins hovering around 20%. Market participants believe the scale-up of large-cell deployments like this one could widen margins further by improving manufacturing efficiencies and reducing the need for costly auxiliary systems.

Why this 400MWh energy storage project is critical for grid stability, renewable integration, and China’s national carbon neutrality targets

The 400MWh installation has immediate practical implications. Hebei Province has long been a critical hub for both renewable energy production and industrial demand. Large-scale storage projects provide essential services such as peak shaving, frequency regulation, and emergency backup—functions that are vital in stabilizing a grid increasingly powered by intermittent solar and wind generation.

By integrating ultra-large cells into a commercial storage project, EVE Energy is not only reducing lifecycle costs but also contributing to China’s broader carbon peaking and neutrality goals. China has committed to reaching peak emissions before 2030 and achieving carbon neutrality by 2060. Utility-scale energy storage is central to this strategy, and projects like Lingshou Phase II show how new technologies can accelerate that trajectory.

The project also aligns with global trends. In the U.S., the Department of Energy’s Long Duration Storage Shot initiative is pushing for a 90% reduction in the cost of long-duration storage by 2030. Europe, meanwhile, is scaling up incentives for grid reliability as the continent phases out coal and nuclear in favor of variable renewable energy. EVE Energy’s achievement provides a benchmark that other global players will measure themselves against.

How international shipments of Mr.Giant storage systems highlight EVE Energy’s growing ambitions in Australia and European energy markets

Just days after the Lingshou grid-connection, EVE Energy began shipping its Mr.Giant energy storage systems—equipped with the same 628Ah cells—to overseas markets including Australia and Europe. With minimalist design, low-noise operation (≤65dB), and suitability for multi-hour storage durations, Mr.Giant has been positioned as a globally competitive product.

International expansion is no small step. Australia’s National Electricity Market (NEM) has been one of the most dynamic proving grounds for grid-scale batteries, with projects like Hornsdale Power Reserve and Victorian Big Battery setting performance benchmarks. By shipping to Australia, EVE Energy is effectively entering one of the most competitive and transparent storage markets in the world.

In Europe, where the EU has tightened local content rules and grid flexibility requirements, large-format cells offer utilities a pathway to achieving compliance while lowering total costs. By positioning Mr.Giant in these regions, EVE Energy is diversifying its revenue base and reducing reliance on China’s domestic market—a strategy that investors typically welcome for risk management.

What investors and analysts are highlighting about EVE Energy’s competitive positioning in the emerging big-battery storage era

Institutional investors have already started to price in EVE Energy’s transition toward ultra-large cell commercialization. In Shenzhen trading, shares of EVE Energy (SZSE: 300014) have seen upward momentum in September 2025, rising nearly 6% in the week following the announcement of the 400MWh project.

Market sentiment reflects optimism that EVE Energy could gain market share in a sector historically concentrated among a few dominant Chinese players. Analysts at leading brokerages have noted that by proving the viability of 628Ah cells, EVE Energy has created a competitive differentiator that could improve its positioning against CATL, BYD, and other incumbents.

Foreign institutional flows have also been positive, with net FII inflows into Chinese renewable and storage equities trending upward in the second half of 2025. Domestic mutual funds (DII activity) have followed suit, reflecting rising confidence that energy storage companies will benefit from supportive policy and accelerating demand. While some analysts caution that margins could compress if raw material prices for lithium or nickel spike, the consensus sentiment leans toward a medium-term “buy” rating for the stock.

How global analysts expect the large-cell battery market to evolve as EVE Energy expands beyond China into the United States and Europe

The successful commissioning of the Lingshou project is more than a domestic achievement. It serves as a demonstration project for how large-cell technology could reshape global energy storage economics. In the U.S., where interconnection queues for renewables have reached record highs, scalable storage is increasingly viewed as a bottleneck solution. In Europe, where grid operators must manage cross-border energy flows, large cells offer both efficiency and reliability.

Industry observers suggest that we are entering the early innings of a “big-battery era.” Just as utility-scale solar shifted from MW to GW capacity deployments within a decade, energy storage is poised to leap from 100MWh-scale projects to multi-GWh installations by the early 2030s. If ultra-large cells can reduce costs and improve reliability, they may accelerate that curve, positioning companies like EVE Energy as central players in the global energy transition.

Why EVE Energy’s 400MWh project milestone could set a long-term benchmark for utility-scale storage across global renewable markets

The launch of the world’s first 400MWh project using 628Ah cells is more than a technical milestone. It represents a turning point in how the energy storage industry will scale, how global grids will integrate renewables, and how investors will evaluate storage companies moving forward.

EVE Energy’s ability to rapidly deploy, scale internationally, and deliver operational reliability highlights not only its technological strength but also its growing role in shaping the economics of grid-scale storage. With international shipments already underway and capital markets responding favorably, the company is well-positioned to benefit from the next phase of the clean energy revolution.

For investors, policymakers, and utilities alike, the Lingshou project is not just another battery installation—it is a signal that the era of big batteries has officially arrived.