Jinko ESS offers 1st generation ESS solutions, such as SunGiga All-in-One (215 kWh/100 kW), SunGiga DC Battery Cabinet (215 kWh), and SunGiga DC Battery Cabinet (344 kWh) for C&I customers
Recently, the company unveiled its 2nd generation New Generation All-in-One model, which boasts a capacity of 261 kWh/125 kW
The case study of SunGiga 215 kWh/100 kW C&I BESS solutions at an Australian C&I customer's existing 200 kW rooftop PV plant shows payback time after 7 years of commissioning, attributed to additional revenue stream by use of stored battery energy for grid ancillary services such as FCAS and arbitrage
The growing demand for PV systems paired with battery energy storage systems (BESS) in utility and commercial and industrial (C&I) applications is driven by several critical factors, including solar energy's intermittent nature, grid congestion, the need for enhanced grid stability, and the opportunity to generate additional revenue through ancillary services. Recognizing the potential of the BESS market, several vertically integrated PV module manufacturers have expanded their product portfolios through horizontal integration, incorporating inverters, BESS solutions, and green hydrogen technologies.
At the recent TaiyangNews Inverters & Battery Storage Virtual Conference 2024, Eathin Xu, Product Manager at Jinko ESS, provided an overview of the company’s latest BESS solutions tailored for global C&I consumers (see Jinko ESS presentation here). Established in 2022, Jinko ESS is a subsidiary of JinkoSolar and boasts an annual manufacturing capacity of 10 GWh in energy storage systems (ESS) and 5 GWh in battery cells, with facilities located in Haining, Zhejiang Province, China.
Jinko ESS showcased a diverse range of solutions under the SunGiga brand, including DC battery cabinets and integrated all-in-one models that combine DC cabinets with a power conversion system (PCS).
The company’s 1st generation commercially available models include:
SunGiga All-in-One: 215 kWh/100 kW (IEC version)
SunGiga DC Battery Cabinet: 215 kWh (IEC version)
SunGiga DC Battery Cabinet: 344 kWh (UL version)
In addition, the company unveiled its second-generation New Generation All-in-One model, offering a capacity of 261 kWh/125 kW. These BESS systems are equipped with liquid-cooled power stacks, providing cell-level thermal insulation with non-uniform flow channels for enhanced cooling efficiency and a multi-level fire protection system for greater reliability.
Moreover, based on a 5-layer protection, and 3-dimensional safety strategy, the SunGiga series models offer comprehensive safety solutions. The 5-layer protection features are: an early prediction and warning of abnormal cells; the battery module’s CCS component protection plate in combination with mica flake between the battery cell; and the battery pack’s safety features like top insulating layer, explosion-proof housing, and fire extinguishing medium. However, rack-level safety features are temperature & smoke detectors, and flammable gas detectors, added the company, while the 3-dimensional safety strategies are based on structural safety, electrical safety, and fire safety.
The 1st generation SunGiga Liquid-Cooled All-in-One model features 5 battery packs connected in series, each consisting of 48 series-connected 3.2 V 280 Ah cells (1P48S*5). This configuration delivers a storage capacity of 215 kWh and an AC output capacity of 100 kW. Measuring 1,300 x 1,300 x 2,300 mm, this model includes an IP55-rated enclosure for outdoor deployment.
The new-generation All-in-One SunGiga BESS model features 5 series-connected battery packs, each containing 52 series-connected 3.2 V 314 Ah cells (1P52S*5). This advanced configuration offers a storage capacity of 261 kWh and an AC output capacity of up to 125 kW. The system supports high throughput with a cycle life of up to 8,000 cycles and a round-trip efficiency (RTE) of up to 89%. Additionally, its intelligent unit management allows up to 12 units to be connected in parallel, suitable for both on-grid and off-grid applications.
In addition to integrated models, Jinko ESS offers 2 SunGiga liquid-cooled DC battery cabinets:
IEC 215 kWh DC Cabinet (without integrated PCS) with up to 215 kWh storage capacity
UL 344 kWh DC Cabinet with up to 344 kWh storage capacity
According to the company, up to 10 units of the 215 kWh DC cabinet can be connected in parallel with a maximum of 10 hybrid PCS cabinets or Magarevo cabinets, supporting both DC-coupled and AC-coupled configurations. The hybrid PCS cabinets are equipped with features like an energy management system (EMS), uninterruptible power supply (UPS), and a static transfer switch (STS).
Case study
Jinko ESS provided an overview of a case study featuring the SunGiga 100 kW/215 kWh BESS paired with a 200 kW rooftop PV installation for a commercial and industrial (C&I) consumer in Australia. The installation, which included ten SunGiga 100 kW/215 kWh BESS units, was designed to serve multiple purposes: revenue generation through forecasting and scheduling (FCAS), arbitrage, self-consumption, peak shaving, demand shifting, and energy cost reduction.
Simulation analysis of the combined 1 MW/2.15 MWh BESS and 200 kW rooftop PV system revealed that 50% of the connected load was powered by PV generation, with the remaining demand met by the grid over a year. Graphical data illustrating daily energy activity trends, including the load profile, solar generation, and battery state-of-charge (SOC), highlighted the use of stored battery energy for grid ancillary services such as FCAS and arbitrage during evening hours to generate additional revenue stream.
The company’s financial assessment indicated a payback period of 7 years, covering the upfront costs of both the solar and battery systems. Over a total service life of 15 years, the system is expected to deliver a rate of return of 12.7%.