Sungrow ST225KWH-110KW-2H Battery Storage

Sungrow PowerStack Commercial & Industrial Energy Storage System is devised to support multiple business models like demand response, emergency backup, peak shaving, and grid support, enhancing overall energy management and potentially reducing costs.

Thanks to the system flexible design, ST225kWh-110kW-2h cabinets can be installed without separation spaces, optimising the use of available area. Up to 10 cabinets can be connected per installation.

Whether placed face-to-face, back-to-back, or side-by-side, it perfectly caters to the unique needs of commercial and industrial applications where space usage is critical.

PowerStack is an all-in-one, highly integrated storage solution which is designed for quick connection and commissioning minimising on-site installation work and operating costs.

All components come pre-assembled inside a cabinet; all plumbing is connected. On -site, the installation consists of basic work such as DC connections, groundwork, auxiliary power supplies, AC connection, and cold and hot commissioning. The complete commissioning is done in two days.

Other features:

• The bottom of the cabinet comes with forklift slots for flexible load handling and safety.
• Bottom/Side/Rear wiring layout.
• 3 wiring methods are supported - only the power line is needed. There is no need for underground wiring.

Sungrow PowerStack features efficient liquid-cooling technology, which ensures uniform heat dissipation and maintaining a maximum temperature difference of less than 2.5°C between cells. The temperature control offers enhanced energy efficiency, and extended system lifespan.

The PCS uses a forced-air cooling system.

The system includes AI cell-level health monitoring of cell temperature, current and voltage.

Designed for extreme conditions, the system operates from -30oC to 50oC, and at altitudes of up to 3,000 meters.

ST225kWh-110kW-2h is designed for outdoor installation. With an IP55 rating, the system is protected against dust and water jets from all directions.

In addition, it offers a C5 corrosion resistance - a very high level of corrosion protection. The system is suitable for highly corrosive environments often found, for example, in places with high humidity, in industrial facilities, and coastal areas.

Sungrow ST225kWh battery energy storage utilises five layers of safety protection, including multi-level fuse protection, multistage overcurrent protection, fast breaking and arc extinguishing, and over-temperature protection. The system has a separate fire-resistant compartment.

All these features are meant to contain and minimise the impact of any potential faults and to enhance the overall safety and reliability of the system.

Sungrow conducts comprehensive testing to ensure the whole system security. The tests cover different components of the system. Here are some of the tests performed by Sungrow:

• Cell & Pack
• Rack
• Power Conversion System (PCS)
• Switchgear
• ESS TEMP
• ESS EMC

Sungrow ST225kWh-110kW-2h provides a three-layer fire safety design, accurate early warning of thermal runaway, timely fire protection, and anti-explosion.

The fire protection system layers:

• Early Warning: it includes a flammable gas detector, a smoke detector, and a heat detector.
• Explosion Venting: explosion vent panel. The enclosure of the cabinet meets 2h fire resistance.
• Fire Protection: extinguish fire immediately to reduce damage. FK5112 gas is used as a fire suppression agent, as well as fire sprinklers.

The system includes advanced local and remote monitoring via the web or iSolarCloud app, providing real-time data and alerts for quick identification and troubleshooting.

Additionally, remote software updates are possible, significantly reducing operational and maintenance costs, and enabling a more streamlined and cost-effective energy management experience.

Sungrow PowerStack System is certified to the highest industrial standards. It complies with EU GDPR and holds SGS Certification, as well as IEC 62443 DEKRA International Safety Certification, ensuring excellent security and reliability.

Cabinet

• Rated ESS capacity: 225 kWh
• RTE (Round Trip Efficiency): ≥ 90%
• Depth of Discharge:100%
• System Degree of Protection: IP 55
• Operating Temperature [℃]: -30 ～ 50
• Communication Protocol: Modbus TCP
• System Dimension (WxHxD): 1150 x 2450 x 1610 mm
• Weight: ≤ 3.1 tonnes
• Standard 5-Year Warranty

Battery (DC)

• Cell Material: LFP
• Rated battery capacity: 280Ah
• Battery String Configuration: 256S1P
• Voltage range: 691.2V~934.4 V

PCS (AC)

• Max. output power 110kW
• PCS max efficiency: 98.5%
• Grid Voltage Range: 340V–440V
• Nominal frequency: 50 Hz / 60 Hz
• Rated AC Output: 144A
• AC current harmonics THDi ≤ 3.0 %