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Sungrow

ST225kWh-110kW-2h

Single liquid-cooled outdoor cabinet, 229 kWh + 110 kW PCS (2-hour); separate transformer cabinet needed for off-grid

Sungrow PowerStack 200CS (product page model ST225CS-2H); 280 Ah LFP cells

Short answer

The Sungrow ST225kWh-110kW-2h is an LFP C&I battery cabinet (as specified: Single liquid-cooled outdoor cabinet, 229 kWh + 110 kW PCS (2-hour); separate transformer cabinet needed for off-grid). Usable energy: unavailable. Max. discharge power: 110 kW. Round-trip efficiency: 90 % (AC). Warranty: 5 years.

Each figure is in the table below with its source and the day it was read.

Specifications

SpecValueSource
ChemistryLFP'LFP 3.2 V / 280 Ah'info-support.sungrowpower.comDatasheet · read 28 Oct 2026
Usable energyunavailableNot published
Nominal energy229 kWhmodel name says 225 kWh, datasheet nominal capacity 229 kWhinfo-support.sungrowpower.comDatasheet · read 28 Oct 2026
Max. discharge power110 kWAC nominal power (on-grid)info-support.sungrowpower.comDatasheet · read 28 Oct 2026
Max. charge power110 kWAC nominal power (on-grid), 400 Vinfo-support.sungrowpower.comDatasheet · read 28 Oct 2026
C-rate0.48 Cderived: 110 kW / 229 kWh = 0.48info-support.sungrowpower.comDatasheet · read 28 Oct 2026
Round-trip efficiency90 % (AC)Product page 'System RTE 90%'; measurement point / aux inclusion not defined; not in datasheetsungrowpower.comManufacturer page · read 28 Oct 2026
Depth of dischargeunavailableNot stated in datasheet; warranty conditions assume 90% DoDNot published
Cycle lifeunavailableNot in datasheet; warranty guarantees 6500 full cycles (see warranty_cycles)Not published
Warranty5 yearsStandard product warranty 5 y, extended warranty +5 y available (Schedule D). Performance warranty runs max 10 y (Schedule E). 'SUNGROW Supplier's Warranty for C&I ESS' V2026-04-23 (effective April 2026, products produced from 2026-03-20), issued by Sungrow Power UK Ltd., valid in EU-27 incl. NL, DE, RO plus UK, CH, NO and others. Official Sungrow document but retrieved from distributor Alternergy's site.alternergy.co.ukDistributor · read 28 Oct 2026
Warranty cycles6,500 cycles70% of nominal energy until earliest of 6500 full cycles or 10 years, at 25 C and 90% DoD (Schedule E)alternergy.co.ukDistributor · read 28 Oct 2026
Warranty throughputunavailableNot published
Capacity at end of warranty70 %alternergy.co.ukDistributor · read 28 Oct 2026
Nominal voltage819.2 Vderived: 256S1P x 3.2 V; nominal voltage range 691.2-934.4 Vinfo-support.sungrowpower.comDatasheet · read 28 Oct 2026
Operating temperature−30 to 50 °Cderating > 45 C; max altitude 3000 minfo-support.sungrowpower.comDatasheet · read 28 Oct 2026
Dimensions (W × D × H)1,150 × 1,610 × 2,450 mmdatasheet W x H x D = 1150 x 2450 x 1610info-support.sungrowpower.comDatasheet · read 28 Oct 2026
Weight3,100 kginfo-support.sungrowpower.comDatasheet · read 28 Oct 2026
Ingress protectionIP55anti-corrosion C5 default, C3 optionalinfo-support.sungrowpower.comDatasheet · read 28 Oct 2026
Integrated inverter (PCS)Yes, 110 kWoff-grid requires additional 250 kVA transformer cabinet (1200x2000x1200 mm, 1500 kg)info-support.sungrowpower.comDatasheet · read 28 Oct 2026
ScalabilityMax. parallel quantity (off-grid) 10; on-grid limit not stated; 'seamless side by side parallel connection'info-support.sungrowpower.comDatasheet · read 28 Oct 2026
CertificationsIEC 62619, IEC 63056, IEC 62040, IEC 62477, IEC 61000, IEC 62933, UN 38.3info-support.sungrowpower.comDatasheet · read 28 Oct 2026
Compatible invertersunavailableN/A: integrated PCSNot published
Datasheetinfo-support.sungrowpower.comversion Version 3 (APAC & EUR) · dated 2024-11-06 · read 28 Oct 2026
Notes

Product page names it 'PowerStack 200CS 110kW/229kWh ST225CS-2H'; datasheet file name dated 20241106. Probably being superseded by PowerStack 255CS.

Sold in: EU, GB, global

Prices

No public price listing was found when this database was compiled (28 Oct 2026). Zorowatt does not estimate prices.

Questions

How much usable energy does the Sungrow ST225kWh-110kW-2h store?
The usable energy is unavailable: it was not found in the manufacturer's documents or other sources checked for this database (compiled 28 Oct 2026).
What is the round-trip efficiency of the Sungrow ST225kWh-110kW-2h?
90 % (AC) (manufacturer page, sungrowpower.com, read 28 Oct 2026). AC means measured at the grid side, with the inverter (PCS) and auxiliaries included.
What warranty does the Sungrow ST225kWh-110kW-2h have?
5 years, 6,500 cycles, 70 % of capacity at the end (distributor, alternergy.co.uk, read 28 Oct 2026). The warranty document's own terms decide which limit comes first.
Does the Sungrow ST225kWh-110kW-2h include an inverter?
Yes, it has an integrated power conversion system (PCS) rated 110 kW (datasheet, info-support.sungrowpower.com, read 28 Oct 2026).
How much does the Sungrow ST225kWh-110kW-2h cost?
No public price listing was found for it when this database was compiled (28 Oct 2026). Zorowatt does not estimate prices.

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