BESS comparison
AlphaESS Aster 5000 vs CRRC Zhuzhou Institute 6.X Liquid Cooling Energy Storage System
Both columns come from what AlphaESS and CRRC Zhuzhou Institute 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
CRRC Zhuzhou Institute
6.X Liquid Cooling Energy Storage System
6.901 MWh
20 ft containerliquid-cooledLFPshipping
Specifications side by side
| Field | AlphaESS Aster 5000 | CRRC Zhuzhou Institute 6.X Liquid Cooling Energy Storage System |
|---|---|---|
| Max energy per enclosure | 5.016 MWh | 6.901 MWh |
| Max power per enclosure | 2.508 MW | not published |
| Published durations | 2 h | 2 h · 4 h |
| Segment | utility-scale | utility-scale |
| Status | shipping | shipping |
| Cell chemistry | LFP | LFP |
| Cell capacity | not published | 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 | 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 °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 system; flooded fire protection systems (options); fire alarm panel, heat and smoke detection, alarm bell and strobe |
| Generation | V01 (2025-05) | 6.X (2026) |
| Announced | not published | 2026-01 |
| 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, UL9540A, UN3536, UN38.3 |
| 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; 6.X Liquid Cooling Energy Storage System — 6.901 MWh
- Published durations: Aster 5000 — 2 h; 6.X Liquid Cooling Energy Storage System — 2 h · 4 h
- DC voltage: Aster 5000 — 1331.2 (rated) V; 6.X Liquid Cooling Energy Storage System — 1081.6–1497.6 V
- Operating temperature: Aster 5000 — -40…50 (battery module) °C; 6.X Liquid Cooling Energy Storage System — -30…55 °C
- Weight: Aster 5000 — 43 t; 6.X Liquid Cooling Energy Storage System — 48 t
- Fire suppression: Aster 5000 — aerosol + sprinkler (redundant dual-extinguishing) + explosion relief panel; 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: Aster 5000 — V01 (2025-05); 6.X Liquid Cooling Energy Storage System — 6.X (2026)
- Certifications: Aster 5000 — IEC 61000, IEC 62477, IEC 62619, IEC 62933, NFPA 69, UL 1973, UL 9540A; 6.X Liquid Cooling Energy Storage System — IEC 61000, IEC 62477-1, IEC 62619, IEC 62933-5-2, IEC 63056, UL9540A, UN3536, UN38.3
Published by only one of the two: Max power per enclosure, Cell capacity, Cell configuration, Announced.
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 |
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 AlphaESS Aster 5000 →Open CRRC Zhuzhou Institute 6.X Liquid Cooling Energy Storage System →
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