Sungrow STxxxCS-2H-US

STxxxCS-2H-US: 257 kWh nameplate energy; 125 kW continuous; lithium iron phosphate; accepts solar panels directly (DC-coupled).

• Nameplate energy (CEC)257 kWh
• Total energy (datasheet)257 kWh
• Rated power (CEC)125 kW
• Max continuous discharge (CEC)125 kW
• Continuous power (datasheet)125 kW
• Full-power discharge timeabout 2 h at full power
• ChemistryLithium Iron Phosphate
• Grid connection480 V
• Battery voltage (DC, nominal)480 V
• Battery voltage range (DC)422–528 V

• Enclosure typeNEMA 3R
• Operating temperature−30 to 50 °C

• UL 9540 (energy storage system)Certified by TUV Rheinland of North America
• Certificate date & editionAug 27, 2025 · Ed. 3 : 2025
• UL 9540A (fire propagation test)Yes
• Other standards on datasheetUL 1741, IEEE 1547, UL 9540A, UL 9540, UL 1973, UN 38.3

• UL 1741 SB (IEEE 1547-2018)Yes
• UL 1741 SA (Rule 21)No
• CSIP (IEEE 2030.5)Yes (with conditions)
• JA12 declaration (Title 24)No

• Communicationethernet, modbus

• PDF
  ST255CS-2H-US Datasheet

  Datasheet · Jun 2025