Jinko ESS showcased its SunGiga G2 and SunGiga G2 Plus C&I ESS models at The Battery Show India 2026
The former is rated for a maximum RTE of ≥89%, and the latter for ≥90% at the system-level
Both use liquid-cooling thermal regulation and have an operating temperature range of -30 to +55°C
JinkoSolar's energy storage arm, Jinko ESS, showcased two energy storage systems (ESS) for the commercial & industrial (C&I) segment at The Battery Show India 2026.
The first, SunGiga G2, measures 1,100 × 1,430 × 2,400 mm (W × D × H) and uses five battery packs, each rated at 52.2 kWh, assembled vertically for a total capacity of 261 kWh. Each pack uses 3.2 V and 314 Ah lithium-iron-phosphate (LFP) cells. This storage section offers a nominal voltage (DC) of 832 V and an operating voltage range of 728 to 936 V. It also features built-in battery management systems (BMS), an energy management system (EMS), and a 130.5 kW power conversion system (PCS). The PCS, a bidirectional converter connected between the storage section and the grid, is housed in a separate part of the cabinet. It charges the storage at a full-load power (400 V AC) of 130.5 kW and a C-rate of 0.5P. C-rate is the nominal charging/discharging rate of a battery. The ESS switches to backup mode within 20 ms of a grid outage and discharges up to 130.5 kW of power (AC) to loads. Its rated discharge duration is about two hours (at 0.5P), or until the battery reaches full discharge. The product datasheet specifies a round-trip efficiency (RTE) of ≥89% at the system level.
The SunGiga G2 Plus uses a larger 1,920 × 1,430 × 2,400 mm (W × D × H) cabinet and offers twice the storage capacity, at 522 kWh, by housing double the number (10) of 52.2 kWh battery units. It shares the same nominal and operating voltage range (DC) but has a slower C-rate of 0.25P. It can charge or discharge itself to allowable limits for a two-hour longer duration (around four hours) via a built-in 130.5 kW PCS. This slower C-rate with reduced losses results in a slightly higher maximum RTE of ≥90%.
Both products use liquid-cooling thermal regulation to keep the cell-to-cell temperature delta within ≤2°C, feature IP55-rated cabinets, and support an operating temperature range of -30 to +55°C. According to product datasheets, SunGiga G2 weighs 2,850 kg, while SunGiga G2 Plus weighs an additional 2,150 kg.
For capacity expansion, up to 12 lighter ESS units can be connected in parallel for a cumulative capacity of 3,132 kWh. In comparison, the heavier ESS supports six units with the same cumulative capacity.
TaiyangNews has recently published its "Balance of System (BoS) Components 2026" report, featuring inverters, storage and technology trends presented at SNEC and Intersolar Europe 2026.
