BESS comparison
AlphaESS Aster 5000 vs CATL TENER
Both columns come from what AlphaESS and CATL 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
CATL
TENER
6.25 MWh
20 ft containerliquid-cooledLFPshipping
Specifications side by side
| Field | AlphaESS Aster 5000 | CATL TENER |
|---|---|---|
| Max energy per enclosure | 5.016 MWh | 6.25 MWh |
| Max power per enclosure | 2.508 MW | 3.126 MW |
| 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 | 1P104S×4×8P (pack 1P104S, 4 packs per rack = 1P416S, 8 racks in parallel) |
| 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 | 1331.2 rated; 1040–1500 range V |
| Cooling | liquid-cooled | liquid-cooled |
| Ingress protection | IP55 | not published |
| Operating temperature | -40…50 (battery module) °C | -30…55 °C |
| Dimensions (L × W × H) | 6058 × 2438 × 2896 mm | not published |
| Weight | 43 t | 45 t |
| Energy density | not published | not published |
| Round-trip efficiency | not published | not published |
| Cycle life | not published | 8,000 · Cell-level figure from CATL 2026 brochure: 587 Ah cell ≥8,000 cycles (25 °C, 0.5P/0.5P, 70% SOH). System-level cycle life not published; CATL claims zero capacity/power degradation in first five years. |
| Calendar life | not published | not published |
| Warranty | not published | not published |
| Fire suppression | aerosol + sprinkler (redundant dual-extinguishing) + explosion relief panel | not published |
| Generation | V01 (2025-05) | TENER (2024); Chinese market designation 天恒 C2-L625 |
| Announced | not published | 2024-04 |
| Certifications | IEC 61000, IEC 62477, IEC 62619, IEC 62933, NFPA 69, UL 1973, UL 9540A | GB 44240-2024, GB/T 34131-2023, GB/T 36276-2023, GB/T 44026-2024 |
| 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; TENER — 6.25 MWh
- Max power per enclosure: Aster 5000 — 2.508 MW; TENER — 3.126 MW
- DC voltage: Aster 5000 — 1331.2 (rated) V; TENER — 1331.2 rated; 1040–1500 range V
- Operating temperature: Aster 5000 — -40…50 (battery module) °C; TENER — -30…55 °C
- Weight: Aster 5000 — 43 t; TENER — 45 t
- Generation: Aster 5000 — V01 (2025-05); TENER — TENER (2024); Chinese market designation 天恒 C2-L625
- Certifications: Aster 5000 — IEC 61000, IEC 62477, IEC 62619, IEC 62933, NFPA 69, UL 1973, UL 9540A; TENER — GB 44240-2024, GB/T 34131-2023, GB/T 36276-2023, GB/T 44026-2024
Published by only one of the two: Cell capacity, Cell configuration, Ingress protection, Dimensions (L × W × H), Cycle life, Fire suppression, 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 |
CATL TENER variants
| Variants | Energy | Power | Duration |
|---|---|---|---|
| 6.25 MWh 0.5P (2 × 1562.82 kW); brochure states 2 h/4 h system compatibility | 6.25 MWh | 3.126 MW | 2 h |
Full model cards
Open AlphaESS Aster 5000 →Open CATL TENER →
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