BESS comparison
CALB 20ft 5MWh High-Voltage Liquid-Cooled Container ESS vs CRRC Zhuzhou Institute 6.X Liquid Cooling Energy Storage System
Both columns come from what CALB and CRRC Zhuzhou Institute publish. Fields either maker does not publish are marked «not published»; we do not estimate or rank.
CALB
20ft 5MWh High-Voltage Liquid-Cooled Container ESS
5 MWh
20 ft containerliquid-cooledLFPshipping
CRRC Zhuzhou Institute
6.X Liquid Cooling Energy Storage System
6.901 MWh
20 ft containerliquid-cooledLFPshipping
Specifications side by side
| Field | CALB 20ft 5MWh High-Voltage Liquid-Cooled Container ESS | CRRC Zhuzhou Institute 6.X Liquid Cooling Energy Storage System |
|---|---|---|
| Max energy per enclosure | 5 MWh | 6.901 MWh |
| Max power per enclosure | not published | not published |
| Published durations | not published | 2 h · 4 h |
| Segment | utility-scale | utility-scale |
| Status | shipping | shipping |
| Cell chemistry | LFP | LFP |
| Cell capacity | 314 Ah | 587 Ah |
| Cell configuration | not published | 416S4P (10-ft) / 416S8P (20-ft) |
| Cell supplier | not published | not published |
| Form factor | 20 ft container | 20 ft container |
| Block type | DC block | DC block |
| PCS integrated | no | no |
| DC voltage | not published | 1081.6–1497.6 V |
| Cooling | liquid-cooled | liquid-cooled |
| Ingress protection | not published | IP55 |
| Operating temperature | not published | -30…55 °C |
| Dimensions (L × W × H) | not published | 6058 × 2438 × 2896 mm |
| Weight | not published | 48 t |
| Energy density | not published | not published |
| Round-trip efficiency | 95% | not published |
| Cycle life | not published | not published |
| Calendar life | 15 y | not published |
| Warranty | not published | not published |
| Fire suppression | pack-level detection and suppression (one detector and one suppression unit per pack); system-level immersion water fire protection | Aerosol-based suppression system; flooded fire protection systems (options); fire alarm panel, heat and smoke detection, alarm bell and strobe |
| Generation | 314Ah / 1P104S | 6.X (2026) |
| Announced | not published | 2026-01 |
| Certifications | not published | IEC 61000, IEC 62477-1, IEC 62619, IEC 62933-5-2, IEC 63056, UL9540A, UN3536, UN38.3 |
| Public datasheet | no | yes |
Where they differ
Only fields both manufacturers publish and where the values are not identical. Not a judgement — the right choice depends on the project.
- Max energy per enclosure: 20ft 5MWh High-Voltage Liquid-Cooled Container ESS — 5 MWh; 6.X Liquid Cooling Energy Storage System — 6.901 MWh
- Cell capacity: 20ft 5MWh High-Voltage Liquid-Cooled Container ESS — 314 Ah; 6.X Liquid Cooling Energy Storage System — 587 Ah
- Fire suppression: 20ft 5MWh High-Voltage Liquid-Cooled Container ESS — pack-level detection and suppression (one detector and one suppression unit per pack); system-level immersion water fire protection; 6.X Liquid Cooling Energy Storage System — Aerosol-based suppression system; flooded fire protection systems (options); fire alarm panel, heat and smoke detection, alarm bell and strobe
- Generation: 20ft 5MWh High-Voltage Liquid-Cooled Container ESS — 314Ah / 1P104S; 6.X Liquid Cooling Energy Storage System — 6.X (2026)
- Public datasheet: 20ft 5MWh High-Voltage Liquid-Cooled Container ESS — no; 6.X Liquid Cooling Energy Storage System — yes
Published by only one of the two: Published durations, Cell configuration, DC voltage, Ingress protection, Operating temperature, Dimensions (L × W × H), Weight, Round-trip efficiency, Calendar life, Announced, Certifications.
Variants
CALB 20ft 5MWh High-Voltage Liquid-Cooled Container ESS variants
| Variants | Energy | Power | Duration |
|---|---|---|---|
| 5 MWh | 5 MWh | not published | not published |
CRRC Zhuzhou Institute 6.X Liquid Cooling Energy Storage System variants
| Variants | Energy | Power | Duration |
|---|---|---|---|
| CESS-L3125-EU-0.5C — 3.125 MWh (10-ft, 587 Ah) | 3.125 MWh | not published | 2 h |
| CESS-L3125-EU-0.25C — 3.125 MWh (10-ft, 587 Ah) | 3.125 MWh | not published | 4 h |
| CESS-L3450-EU-0.5C — 3.450 MWh (10-ft, 648 Ah) | 3.45 MWh | not published | 2 h |
| CESS-L6250-EU-0.5C — 6.250 MWh (20-ft, 587 Ah) | 6.25 MWh | not published | 2 h |
| CESS-L6250-EU-0.25C — 6.250 MWh (20-ft, 587 Ah) | 6.25 MWh | not published | 4 h |
| CESS-L6901-EU-0.5C — 6.901 MWh (20-ft, 648 Ah) | 6.901 MWh | not published | 2 h |
Full model cards
Open CALB 20ft 5MWh High-Voltage Liquid-Cooled Container ESS →Open CRRC Zhuzhou Institute 6.X Liquid Cooling Energy Storage System →
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