Sungrow · commercial & industrial
Sungrow PowerKeeper (ST050-250CF)
announcedmodular blockDC blockair-cooledLFPBNEF Tier 1
Everything below comes from what Sungrow publishes about the PowerKeeper (ST050-250CF): the datasheet, the product page and press releases. Where a figure is not published, the field says so — we do not estimate.
Variants
Energy figures are usable as published by the manufacturer. One model, several duration options — the same enclosure with different power ratings.
| Variants | Energy | Power | Duration |
|---|---|---|---|
| ST100CF (8 x 12.48 kWh packs) | 99.8 kWh | not published | not published |
| ST150CF | 149.8 kWh | not published | not published |
| ST200CF | 199.7 kWh | not published | not published |
| ST250CF (max per system; up to 4 x 250 kWh via battery junction boxes) | 249.6 kWh | not published | not published |
Specifications
| Cell chemistry | LFP |
|---|---|
| Cell capacity | not published |
| Cell configuration | not published |
| Cell supplier | not published |
| Form factor | modular block |
| Block type | DC block |
| PCS integrated | no |
| DC voltage | 32.4–43.8 (per pack) V |
| Cooling | air-cooled |
| Ingress protection | IP66 |
| Operating temperature | -20…55 (discharge); 0…55 (charge, -20…55 optional) °C |
| Dimensions (L × W × H) | not published |
| Weight | not published |
| Energy density | not published |
| Round-trip efficiency | not published |
| Cycle life | not published |
| Calendar life | not published |
| Warranty | not published |
| Fire suppression | Aerosol, smoke sensor and explosion relief valve (pack level) |
| Generation | 2026 |
| Announced | not published |
Certifications
IEC / EN 62619IEC / EN 63056UN 38.3IEC / EN62477-1IEC / EN 62040IEC / EN 61000-6-1 / 6-3VDE 2510-50IEC / EN 62933-5-2UL 9540A
Key facts
- Modular DC battery system: 12.48 kWh, ≤90 kg LFP packs (800 x 270 x 405 mm) stacked 3–20 per string, 49.9–249.6 kWh per system, sold with the SH125CX 125 kW hybrid inverter and Logger1000
- Datasheet (V4, ©2026, marked 'Preliminary'): usable capacity equals nominal at 25 °C / 0.25C; 0.5P nominal charge/discharge; IP66, C5, forced-air cooling; withstands 50 cm submersion for 24 h
- Optional battery junction boxes extend a single inverter to 2–4 strings (up to 4 x 250 kWh) for 8-h duration
- System-level power, cell capacity, cycle life and warranty are not stated in the battery datasheet; only configurations ≥100 kWh are listed here (ST050/062/075CF fall below the C&I threshold)
What Sungrow does not publish for this model
These fields are empty because no public datasheet or release states them. That is information too: ask for these numbers before you shortlist.
Cell capacityCell configurationCell supplierDimensions (L × W × H)WeightEnergy densityRound-trip efficiencyCycle lifeCalendar lifeWarrantyAnnounced
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Sourcing quote for Sungrow PowerKeeper (ST050-250CF)
Coloprice is published by Dream View, a China-sourcing company. For commercial-scale projects we buy BESS containers factory-direct — verified manufacturer, certification review, pre-shipment inspection, export and freight — for a flat 10% fee.
Sources: Sungrow — PowerKeeper ST050-250CF + SH125CX product page · Datasheet ST050-250CF IEC (PDF)