At REI Expo 2026 in Greater Noida, India, JinkoESS, the storage company of the Jinko group, has presented its SunTera G3 container for utility-scale plants. The liquid-cooled 20-foot unit holds 6.25 MWh on 587 Ah LFP cells, and it keeps the difference in cell temperatures under 2.5 degrees Celsius.
Snapshot
Company: Zhejiang Jinko Energy Storage (JinkoESS)
Product: SunTera G3 energy storage system
Capacity: 6.25 MWh in a 20-foot container
Cells: LFP 587 Ah (588 Ah), 1P416S x 8
Rated voltage: 1,331.2 V
Charge / discharge: 0.5P / 0.25P
Cooling: liquid; cell temperature difference below 2.5°C
Protection: IP55, C4 (C5 optional)
Weight: 48,000 kg
Also shown: SunGiga G2 and G2+ C&I cabinets
Stand: Hall 3, Booth 3.113
JinkoESS is exhibiting at REI Expo 2026 in Hall 3, at Booth 3.113, at India Expo Mart in Greater Noida, Uttar Pradesh, India. The company, which is formally named Zhejiang Jinko Energy Storage, was set up by the Jinko group in December 2022, and an open rack of its battery modules has been built into the front counter of its stand.
Its headline product is the SunTera G3, a 20-foot container that holds 6.25 MWh. According to the company's product sheet, the system has been built on LFP cells of 587 Ah, which are arranged in eight strings of 416 cells in series, and it runs at a rated voltage of 1,331.2 V. It can be charged at 0.5P and discharged at 0.25P, which makes it a four-hour system.
The container is cooled by liquid through a serpentine flow channel, which keeps the difference in cell temperatures under 2.5 degrees Celsius. The company says that its rack-level energy management raises the round-trip efficiency by more than 1%, and that active balancing adds about 5% to the usable capacity. The container weighs 48,000 kg, it is sealed to IP55, and it combines gas detection with a water-based fire-suppression system.
The product sheet presents the SunTera G3 for solar-plus-storage plants, for grid services such as frequency regulation and peak shaving, and for trading on energy markets. For commercial sites, the company is also showing its SunGiga G2 and G2+ cabinets on the same stand.