Chinese battery giant Contemporary Amperex Technology Co. Ltd. (CATL) (SHE: 300750) has introduced the Tener Stack, a 9 MWh energy storage solution it claims is the world’s first production-ready ultra-high-capacity system of its kind. The launch took place on May 7 at the battery storage trade show in Munich, Germany.
The Tener Stack builds on the April 2024 release of CATL’s Tener system, which offered 6.25 MWh of energy storage with zero degradation over five years. The new system improves on that with a 45% increase in volume utilization and a 50% rise in energy density, thanks to the use of CATL’s high-energy-density, long-life cells. According to CATL, the Tener Stack can store enough electricity to charge approximately 150 electric vehicles or power an average German household for six years.
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In addition to its energy capacity, the Tener Stack emphasizes deployment efficiency and regulatory compliance. Its modular “Two in One” design allows for half-height containers that stay under the 36-ton legal limit for road transport in most countries, reducing logistics costs by 35%. CATL says the system also improves land use efficiency by 40% and can cut power plant construction costs by 20% when deploying 800 MWh of capacity compared to traditional systems.
The Tener Stack features robust safety measures, including a three-layer insulation design capable of resisting fire for two hours. It is engineered to endure seismic events up to magnitude 9 and withstand hurricanes up to magnitude 5. CATL’s energy storage products have been deployed in over 1,700 projects globally, spanning all climate zones.
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Despite a 9.7% year-on-year revenue decline to RMB 362.01 billion ($50 billion) in 2024, CATL’s energy storage segment grew, generating RMB 57.29 billion and contributing 15.83% of the company’s total revenue—up from 14.94% in 2023.