JinkoSolar to Deliver 6.25MWh Energy Storage System Globally in Q4 2025

In the rapidly evolving global energy landscape, the transition to clean energy is gaining momentum, and energy storage is becoming a vital component in balancing supply and demand while enhancing energy stability. Currently, the energy storage industry is undergoing significant transformations and challenges. In February 2025, the National Development and Reform Commission issued document number 136, halting mandatory energy storage requirements. Recently, the State Council’s Office released opinions aimed at improving pricing governance mechanisms, prompting a market-driven wave that emphasizes allowing market forces to determine prices, thus shifting energy storage from a “cost burden” to a “revenue tool.” In the short term, the energy storage sector may experience some turbulence, with increasing industry concentration. However, in the long run, market mechanisms will drive the practical application of energy storage technologies. Companies that possess core value technologies and demonstrate survival and evolutionary capabilities will continue to thrive in this sector. Wu Dianfeng, General Manager of Jinko Energy’s storage products, stated, “In the future of energy storage, winning the right scenarios means winning the world.”

Launch of the New 6.25MWh Energy Storage System
On April 10, during the 13th Energy Storage International Summit and Exhibition (ESIE2025), Jinko Energy (688223) showcased its photovoltaic and energy storage smart energy solutions and announced the launch of its new generation Blue Whale SunTera G3 6.25MWh battery energy storage system. The booming energy storage industry over the past two years has led to increasing competition among companies, with five key factors—large capacity, long lifespan, high safety, low cost, and smart technology—becoming essential focus areas for downstream customers and increasingly viewed as mandatory requirements for development within the industry.

The Jinko Blue Whale SunTera G3 6.25MWh battery energy storage system features a standard 20-foot container design, making it compatible with global markets. It has a rated capacity of up to 6.251MWh, fulfilling the demand for large-scale energy storage. With over 10,000 cycles of lifespan and a cycle efficiency of over 95%, the G3 significantly enhances discharge capacity throughout its life cycle, providing a reliable guarantee for energy transition. Furthermore, the Jinko Blue Whale SunTera G3 has an IP55 protection rating and C5 corrosion protection level, and it can operate at altitudes of up to 4,000 meters, making it adaptable to extreme conditions and resilient against harsh environments.

Wu Dianfeng highlighted that the company has previously promoted large storage products in regions with high altitude applications, such as Northwest China and parts of South America and North America. The design for high altitudes primarily relates to electrical insulation and creepage distances, which is why Jinko’s products support operation at 4,000 meters.

It is worth noting that in recent years, many countries globally have actively developed wind and solar energy while scaling up lithium battery storage facilities as a regulatory resource. However, the returns often coexist with risks, and performance issues in energy storage products have emerged as a global challenge. The potential for thermal runaway and firefighting difficulties in energy storage systems has become a pressing concern. Wu emphasized that safety is a critical baseline in the energy storage industry. Unlike electric vehicles, energy storage systems do not typically face safety issues from impact but do face electrical safety challenges, particularly when connected to the grid, where they can be affected by external factors such as weather. Therefore, Jinko Energy has made significant considerations regarding electrical and structural safety, going beyond what is offered by similar products on the market, including adherence to international standards and the incorporation of the latest technologies.

The Jinko Blue Whale SunTera G3 sets a benchmark for safety standards in the industry through three dimensions: structural safety, electrical safety, and fire safety. Structurally, it features a unique five-level protection framework from the cell to the system, supporting cell-level anomaly warnings, a fire-resistant casing, and system-level gas suppression. Regarding electrical safety, it utilizes a three-level fuse technology to accurately cut off fault currents, combined with real-time leakage detection, ensuring the stability and controllability of the current system. In terms of fire safety, it implements three-tiered protection at the pack, warehouse-level gas, and water firefighting levels.

According to reports from the Energy Finance Network, the new generation Blue Whale SunTera G3 6.25MWh battery energy storage system is expected to commence global deliveries in the fourth quarter of 2025.

Energy Storage System + Self-Developed Cells: Core Advantages of Integrated Solutions
For photovoltaic companies, venturing into the energy storage sector is no longer novel. Jinko Energy focuses on the integrated research and development and manufacturing of photovoltaic products and overall clean energy solutions, leading the global mainstream photovoltaic market in sales. Leveraging its production and channel advantages in the photovoltaic sector, Jinko began to aggressively develop its energy storage business in 2022, innovating integrated solar storage system solutions and achieving breakthroughs.

According to Jinko Energy’s official WeChat account, the company has secured and delivered multiple commercial energy storage projects in domestic, European, and Middle Eastern markets. Duan Huzi, General Manager of Jinko Storage in China, noted that in 2024, the company expects a significant increase in the shipment of integrated commercial energy storage units, primarily due to its long-standing involvement in the photovoltaic industry. The overlap between the customer bases for photovoltaic and energy storage is substantial, facilitating the utilization of existing photovoltaic channels during customer transitions, thereby accelerating product promotion.

Last April, Jinko Energy launched its specialized 314Ah energy storage cell, marking the beginning of a new era in high-capacity batteries for the company. This cell features high energy efficiency, long lifespan, and high safety, utilizing Jinko’s patented technology and carefully selected materials, designs, and manufacturing processes to ensure cell consistency. Currently, the new 314Ah Pro large-capacity cell achieves the highest capacity in its size category, increasing its cycle lifespan to 15,000 cycles, with a charging and discharging efficiency of up to 96%, ensuring zero degradation over three years and enhancing overall economic benefits throughout its lifecycle.

In response to the increasing competition for larger cell capacities in the industry, Wu Dianfeng expressed that this may not necessarily be a long-term strategy. “The primary benefit of improving energy density is cost reduction, but it also brings about challenges related to heat dissipation and safety. Moreover, a reduction in initial costs does not guarantee that customers will ultimately benefit. The key is to lower costs over the entire lifecycle. In the future, companies may focus more on improving efficiency and the reduction curve, aiming for enhancements that genuinely provide economic value to customers.” Wu also noted that Jinko Energy does not completely dismiss this path, as evidenced by the launch of the 6.25MWh storage system, which is now supported by the industry’s maturity, including liquid cooling management and electrical components.

Conclusion
As the global energy transition accelerates, energy storage technology is becoming a key force driving the proliferation of clean energy and optimizing energy structures. The launch of the Jinko Blue Whale SunTera G3 not only represents a significant breakthrough for Jinko Energy in the energy storage sector but also reflects the company’s commitment to a “zero-carbon future.” Duan Huzi mentioned that the overall market demand is growing, and the company is quite confident in its targets for this year.