BESS comparison
CALB 20ft 5MWh High-Voltage Liquid-Cooled Container ESS vs Great Power Max-20HC-5000
Both columns come from what CALB and Great Power 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
Great Power
Max-20HC-5000
5 MWh
20 ft containerliquid-cooledLFPshipping
Specifications side by side
| Field | CALB 20ft 5MWh High-Voltage Liquid-Cooled Container ESS | Great Power Max-20HC-5000 |
|---|---|---|
| Max energy per enclosure | 5 MWh | 5 MWh |
| Max power per enclosure | not published | 2.5 MW |
| Published durations | not published | 2 h |
| Segment | utility-scale | utility-scale |
| Status | shipping | shipping |
| Cell chemistry | LFP | LFP |
| Cell capacity | 314 Ah | 314 Ah |
| Cell configuration | not published | 1P416S ×12 |
| 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 | 1164.8–1497.8 V |
| Cooling | liquid-cooled | liquid-cooled |
| Ingress protection | not published | IP55 |
| Operating temperature | not published | -35…60 (discharge), -30…50 (charge) °C |
| Dimensions (L × W × H) | not published | 6058 × 2438 × 2896 mm |
| Weight | not published | 46 t |
| Energy density | not published | not published |
| Round-trip efficiency | 95% | 95% |
| 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 + water |
| Generation | 314Ah / 1P104S | 2024 |
| Announced | not published | 2024-09 |
| Certifications | not published | GB/T 36276, IEC 61000, IEC 62619, IEC 62933, NFPA 68, NFPA 69, NFPA 72, NFPA 855, UL 1973, UL 9540, UL 9540A |
| 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.
- 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; Max-20HC-5000 — aerosol + water
- Generation: 20ft 5MWh High-Voltage Liquid-Cooled Container ESS — 314Ah / 1P104S; Max-20HC-5000 — 2024
- Public datasheet: 20ft 5MWh High-Voltage Liquid-Cooled Container ESS — no; Max-20HC-5000 — yes
Published by only one of the two: Max power per enclosure, Published durations, Cell configuration, DC voltage, Ingress protection, Operating temperature, Dimensions (L × W × H), Weight, 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 |
Great Power Max-20HC-5000 variants
| Variants | Energy | Power | Duration |
|---|---|---|---|
| 5.0 MWh @0.5C (≤417 kW ×6 / 1.25 MW ×2) | 5 MWh | 2.5 MW | 2 h |
Full model cards
Open CALB 20ft 5MWh High-Voltage Liquid-Cooled Container ESS →Open Great Power Max-20HC-5000 →
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