CATL energy storage testbed news is drawing global attention in 2026. CATL has launched the world’s largest and most comprehensive energy storage testing and validation platform in China. At the same time, the company confirmed that its sodium-ion batteries will enter mass production this year. Together, these moves strengthen CATL’s position in grid-scale storage and next-generation battery development.
CATL Energy Storage Testbed Opens in Xiamen
CATL officially opened the Xiamen Energy Storage Validation Research Institute, or ESVL, on May 28, 2026. The company built the new center across 10 hectares. It also committed about RMB3 billion to the project. CATL designed the site as an open and shared platform for the global energy storage industry.
The company wants the facility to improve how the market measures real-world system performance. In particular, CATL aims to close the gap between installed storage capacity and field results. This matters because project developers, regulators, insurers, and financiers need better data before they approve large-scale deployments.
Dr. Chen Xiaobo, head of ESVL, said the institute will provide independent and traceable validation data. As a result, regulators can make evidence-based decisions. Insurers can also price risk with greater precision. Meanwhile, financial institutions can assess energy storage assets with more confidence.
Why the CATL Energy Storage Testbed Matters
The new CATL energy storage testbed moves validation beyond component checks. Instead, it tests full systems and entire stations before deployment. This broader approach covers safety, grid support capability, and long-term reliability.
According to CATL, nearly one in five large-scale energy storage power stations worldwide underperform. In addition, nearly half of energy storage systems face grid-connection delays of more than two months. Therefore, stronger pre-delivery testing could help developers identify issues earlier and improve project timelines.
Dr. Wu Kai, CATL’s chief scientist, said scientific rigor now matters more than ever as energy storage enters the gigawatt era. He stressed the need for honest equipment performance data, respect for grid dynamics, and disciplined testing. Consequently, CATL built ESVL to raise quality standards to the station level and bring validation forward to the pre-delivery stage.
CATL Energy Storage Testbed Laboratories and Capabilities
The ESVL center includes five major laboratories. Each lab focuses on a critical part of energy storage validation. Together, they create one of the most advanced testing ecosystems in the sector.
CATL Energy Storage Testbed Grid Integration Lab
The center features the world’s first station-level grid integration laboratory. It includes a 35kV/100MVA grid simulator and a real-time simulator. CATL said this platform is 14 times larger than the 13.8kV/7MVA platform at the U.S. National Renewable Energy Laboratory. Therefore, the lab sets a new global benchmark for grid-level testing.
High-Voltage, Thermal, and Combustion Testing
ESVL also includes a high-voltage safety laboratory. In addition, CATL built a thermal safety and combustion laboratory. This facility is the world’s first large indoor combustion site equipped with a 20MW calorimeter. That device measures heat absorbed or released during physical and chemical changes. As a result, engineers can study system behavior with greater precision.
Environmental Reliability Testing
The environment reliability laboratory can test full-system energy storage containers under extreme conditions. It includes climate, environmental, salt spray, rain, and sand chambers. These systems can verify performance in temperatures from -50C to 100C. They can also simulate high-altitude pressure environments up to 7,200 meters. This range helps manufacturers validate systems for demanding global markets.
Electromagnetic Compatibility Validation
The fifth core lab focuses on electromagnetic compatibility. This area matters because modern storage stations must operate reliably within increasingly complex power systems. Therefore, CATL included this capability to support station-level readiness and stronger system integration.
CATL Starts Sodium-ion Battery Mass Production in 2026
Soon after the ESVL launch, Dr. Wu Kai spoke at the 2026 Equipment Power Forum. There, he announced that CATL’s sodium-ion batteries will enter mass production in 2026. This step marks an important commercial milestone for the company’s broader battery portfolio.
Mass production gives CATL another pathway to serve the fast-growing storage market. Moreover, it allows the company to advance long-term research into high-density lithium-air systems. These systems use lithium as the negative electrode and oxygen from the air as the positive electrode reactant. CATL sees lithium-air as a major future area for battery innovation because of its extremely high theoretical energy density.
What CATL’s 2026 Moves Mean for Energy Storage
CATL has paired infrastructure with manufacturing scale. First, it launched a world-leading validation platform. Then, it confirmed sodium-ion battery mass production in 2026. Together, these decisions show a clear strategy. CATL wants to improve testing quality, support grid-scale deployment, and expand advanced battery production.
For the wider market, the message is clear. Energy storage now needs rigorous station-level validation, not just component testing. At the same time, battery makers continue to broaden their technology options. In that context, CATL’s new testbed and sodium-ion production plans could shape how the industry evaluates performance, safety, and bankability in the years ahead.
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