Cornex signs 50 GWh in storage battery agreements at CIBF 2026

Cornex New Energy (Cornex) signed a series of energy storage battery cooperation agreements totaling 50 GWh during CIBF 2026 in Shenzhen, with partners spanning utility-scale storage, commercial and industrial systems, overseas projects and residential storage. 

The company signed agreements with five companies: CRRC Zhuzhou Institute, CLOU Electronics, Wolong Energy Storage, Cubenergy, and Growatt. According to Cornex’s statement, the largest agreement was a 25 GWh large-capacity storage battery cooperation with CRRC Zhuzhou Institute. Cornex also signed 10 GWh procurement cooperation with CLOU Electronics, and 5 GWh agreements each with Wolong Energy Storage, Cubenergy and Growatt.  

The agreements cover CORNEX’s energy storage cell portfolio, including 648 Ah, 588 Ah, 314 Ah and 100 Ah products. The 588 Ah large-format cell is the main product for utility-scale storage applications and is expected to be used in cooperation with CRRC Zhuzhou Institute, CLOU Electronics, Wolong Energy Storage and Cubenergy. For Growatt, Cornex will supply 100 Ah and 314 Ah cells targeting overseas residential storage markets.  

The company positioned the 588 Ah LFP cell as a flagship product for large energy storage systems. According to EnergyTrend’s CIBF 2026 product roundup, the cell has a gravimetric energy density of 190 Wh/kg, volumetric energy density of 419 Wh/L, energy efficiency of 96.5%, and cycle life of more than 12,000 cycles. The same report said large-format cells of 588 Ah and above were a key theme at this year’s exhibition, pushing storage systems toward the 6 MWh to 8 MWh range.  

CORNEX is pairing the 588 Ah cell with its CTP3.0 module-free integration platform and M6 energy storage system. EnergyTrend said the CTP3.0 design integrates 104 cells into a single pack with rated energy of 195.68 kWh, while the M6 system uses a standard 20-foot container with rated energy of 6.25 MWh. The system includes top-outlet thermal management, active-balancing BMS and AI-based operation and maintenance algorithms.  

The signing package reflects the rapid move among Chinese storage suppliers toward larger cells and higher-density containerized systems, as developers seek to reduce system cost, land use, auxiliary equipment and balance-of-system complexity. Although the agreements were still framework-style cooperation rather than fully delivered sales, CORNEX expands its visibility in both domestic and overseas storage markets. 

The company’s ability to execute the agreements will depend on its manufacturing ramp-up. Cornex said in 2025 that its effective production capacity across its Xiaogan, Wuhan and Yichang bases had exceeded 110 GWh, with more than 60 ESS, EV and module-pack products developed in-house and more than 160 domestic and international certifications completed.  

EnergyTrend reported this month that Cornex now has four manufacturing bases in Hubei — Wuhan, Yichang, Xiaogan and Xiangyang — with 110 GWh of operational effective capacity and another 390 GWh under construction or planned, bringing total planned capacity to 500 GWh.