BESS comparison
AlphaESS Aster 5000 vs ZOE Energy Storage Z BOX-P 6200 2H
Both columns come from what AlphaESS and ZOE Energy Storage publish. Fields either maker does not publish are marked «not published»; we do not estimate or rank.
AlphaESS
Aster 5000
5.016 MWh
20 ft containerliquid-cooledLFPshipping
ZOE Energy Storage
Z BOX-P 6200 2H
6.25 MWh
20 ft containerliquid-cooledLFPshipping
Specifications side by side
| Field | AlphaESS Aster 5000 | ZOE Energy Storage Z BOX-P 6200 2H |
|---|---|---|
| Max energy per enclosure | 5.016 MWh | 6.25 MWh |
| Max power per enclosure | 2.508 MW | not published |
| Published durations | 2 h | 2 h |
| Segment | utility-scale | utility-scale |
| Status | shipping | shipping |
| Cell chemistry | LFP | LFP |
| Cell capacity | not published | 587 Ah |
| Cell configuration | not published | 416S8P |
| 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 | 1331.2 (rated) V | 1081.6–1497.6 V |
| Cooling | liquid-cooled | liquid-cooled |
| Ingress protection | IP55 | IP55 |
| Operating temperature | -40…50 (battery module) °C | -30…55 (>45 derating) °C |
| Dimensions (L × W × H) | 6058 × 2438 × 2896 mm | 6058 × 2438 × 2896 mm |
| Weight | 43 t | 48 t |
| Energy density | not published | not published |
| Round-trip efficiency | not published | not published |
| Cycle life | not published | not published |
| Calendar life | not published | not published |
| Warranty | not published | not published |
| Fire suppression | aerosol + sprinkler (redundant dual-extinguishing) + explosion relief panel | aerosol-based suppression; flooded fire protection option; pack-level fire protection |
| Generation | V01 (2025-05) | not published |
| Announced | not published | not published |
| Certifications | IEC 61000, IEC 62477, IEC 62619, IEC 62933, NFPA 69, UL 1973, UL 9540A | IEC 61000, IEC 62477-1, IEC 62619, IEC 62933-5-2, IEC 63056, UL 9540A, UN 3536, UN 38.3 |
| Public datasheet | yes | 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: Aster 5000 — 5.016 MWh; Z BOX-P 6200 2H — 6.25 MWh
- DC voltage: Aster 5000 — 1331.2 (rated) V; Z BOX-P 6200 2H — 1081.6–1497.6 V
- Operating temperature: Aster 5000 — -40…50 (battery module) °C; Z BOX-P 6200 2H — -30…55 (>45 derating) °C
- Weight: Aster 5000 — 43 t; Z BOX-P 6200 2H — 48 t
- Fire suppression: Aster 5000 — aerosol + sprinkler (redundant dual-extinguishing) + explosion relief panel; Z BOX-P 6200 2H — aerosol-based suppression; flooded fire protection option; pack-level fire protection
- Certifications: Aster 5000 — IEC 61000, IEC 62477, IEC 62619, IEC 62933, NFPA 69, UL 1973, UL 9540A; Z BOX-P 6200 2H — IEC 61000, IEC 62477-1, IEC 62619, IEC 62933-5-2, IEC 63056, UL 9540A, UN 3536, UN 38.3
Published by only one of the two: Max power per enclosure, Cell capacity, Cell configuration, Generation.
Variants
AlphaESS Aster 5000 variants
| Variants | Energy | Power | Duration |
|---|---|---|---|
| Aster 5000 (AlphaCS-H20-DC-LC-EX, 12 clusters, 0.5 P) | 5.016 MWh | 2.508 MW | 2 h |
ZOE Energy Storage Z BOX-P 6200 2H variants
| Variants | Energy | Power | Duration |
|---|---|---|---|
| P 6200-2H (6.25 MWh, '2H~8H' long-duration) | 6.25 MWh | not published | 2 h |
Full model cards
Open AlphaESS Aster 5000 →Open ZOE Energy Storage Z BOX-P 6200 2H →
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