Great Power · utility-scale
Great Power Max-20HC-3440
shipping20 ft containerDC blockliquid-cooledLFP · 280 AhBNEF Tier 1
Everything below comes from what Great Power publishes about the Max-20HC-3440: 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 nominal (beginning of life) as published by the manufacturer. One model, several duration options — the same enclosure with different power ratings.
| Variants | Energy | Power | Duration |
|---|---|---|---|
| 3.44 MWh @0.5C (180 kW ×10 / 1.7 MW) | 3.44 MWh | 1.7 MW | 2 h |
Specifications
| Cell chemistry | LFP |
|---|---|
| Cell capacity | 280 Ah |
| Cell configuration | 1P384S ×(10 or 9 or 8) |
| Cell supplier | not published |
| Form factor | 20 ft container |
| Block type | DC block |
| PCS integrated | no |
| DC voltage | 900–1500 V |
| Cooling | liquid-cooled |
| Ingress protection | IP54 |
| Operating temperature | -20…50 (discharge), 0…45 (charge) °C |
| Dimensions (L × W × H) | 6058 × 2438 × 2896 mm |
| Weight | 36 t |
| Energy density | not published |
| Round-trip efficiency | not published |
| Cycle life | not published |
| Calendar life | 15 y |
| Warranty | not published |
| Fire suppression | not published |
| Generation | 2024 |
| Announced | not published |
Certifications
GB/T 36276IEC 62619IEC 62933IEC 61000UL 9540AUL 1973
Key facts
- 3.44 MWh @0.5C on 280 Ah LFP cells; 8, 9 or 10 racks of 1P384S; max current 173 A per rack
- >95% DC charge/discharge energy efficiency (company figure); designed for a 15-year service life
- Weight stated as < 36 t; communication CAN, RS485, TCP/IP; supports third-party SCADA / cloud EMS
- Earlier-generation Max container still listed alongside the 5000 and 6250
What Great Power 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 supplierEnergy densityRound-trip efficiencyCycle lifeWarrantyFire suppressionAnnounced
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Sourcing quote for Great Power Max-20HC-3440
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: Great Power — ESS Products and Solutions brochure, March 2024 (PDF), p. 21 · Great Power — Company Introduction brochure, June 2026 (PDF), p. 57 · Great Power — Utility-Scale Energy Storage System (EN)