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The Sungrow ST255CS energy storage system is a next-generation C&I BESS solution featuring smart liquid cooling technology designed for businesses, factories, and commercial solar power systems. The ST255CS-2H model has a storage capacity of 257kWh, an AC power output of 125kW, and supports both grid-tied and standalone operation with high stability. This is an optimal solution for businesses looking to reduce electricity costs, perform peak shaving, and improve energy self-sufficiency.
See more BESS energy storage systems at XBSOLAR.
| Specification | ST255CS-2H |
|---|---|
| Cell type | LFP3.2V/314Ah |
| Battery configuration | 256S1P |
| Storage capacity | 257kWh |
| Rated voltage range | 691.2V~934.4V |
| Charge/discharge depth | 0%~100% |
| Rated AC power | 125kW |
| AC voltage | 400V |
| Frequency | 50Hz/60Hz |
| Conversion efficiency | 98.5% |
| Protection rating | IP55 |
| Cooling method | Intelligent liquid cooling |
| Noise level | ≤65dB@1m |
| Dimensions (W×H×D) | 1150mm×2450mm×1610mm |
| Weight | ≤3200kg |
| Communication standard | ModbusTCP |
| Safety standards | IEC62619, IEC63056, IEC62040, IEC62477 |
According to the XBSOLAR engineering team, the PowerStack ST255CS-2H is one of the most polished commercial BESS systems available, thanks to its all-in-one design integrating the PCS, battery pack, and liquid cooling system within a single cabinet. This helps shorten actual deployment time in Vietnam, especially for factory projects requiring fast commissioning.
A standout feature of the system is its ability to maintain a cell temperature difference of ≤ 2.5℃, which extends battery lifespan and stabilizes performance when operating in high-temperature environments like southern Vietnam. The system also supports parallel connection of up to 25 units in on-grid mode, suitable for microgrid projects or large-scale peak shaving.
XBSOLAR recommends pairing the ST255CS with a hybrid inverter and a smart EMS to optimize solar energy storage capability, reduce demand charge costs, and improve operational efficiency for manufacturing businesses.
Yes. The system uses smart liquid cooling, operates within a temperature range of -30℃~50℃, and meets the IP55 protection standard, making it suitable for Vietnam’s hot and humid environment.
The product is suited for commercial and industrial C&I solar power systems, supporting on-grid/off-grid operation and communication via ModbusTCP.
The system boasts a conversion efficiency of up to 98.5%, liquid cooling technology that maintains a cell temperature difference of ≤ 2.5℃, and AI battery monitoring that enhances operational safety.
The ST255CS supports cloud monitoring via iSolarCloud with real-time alerts. Engineers can perform remote inspections, update firmware, and quickly resolve operational issues.
The price depends on the project configuration, number of cabinets, and actual EMS requirements. Contact XBSOLAR to receive a quote and the optimal solution for your business.
