The assessment
How it scores, by category
Market position
The data
DC-coupled battery
Stores DC energy and relies on system power electronics outside the battery product for household AC.
- Product role
- The published battery record covers the storage stack, controller and stated capacity range.
- Published range
- 6.9–20.7 kWh
- Phase
- Not recorded
- Backup boundary
- Installation-specific
Usable capacity
100% of this battery’s nominal capacity is usable, 6.9 kWh in the scored configuration.6.9 kWh usableScored configuration: LUNA2000-5/7/.../21-S1 (Smart String ESS, up to 20.7 kWh/tower). Published range 6.9–20.7 kWh.
No reserve is withheld at the stated depth of discharge.
At a sourced 100% depth of discharge the usable and nominal figures are the same number, so no separate nominal capacity is stated.
Usable capacity sourceDepth-of-discharge sourceCapacity guarantee: minimum retained at year 15
No year-by-year capacity schedule is published for this product - the manufacturer guarantees only this end-of-term minimum, not a specific decline curve. Capacity figure based on the sourced usable capacity of the base configuration; modular systems scale with additional modules.
Verification & sources
Market context
Global evidencechange in the site menu
Global benchmark. This scorecard is benchmarked globally. A global score does not imply local availability, certification, warranty coverage, or installer compatibility.
Benchmark anchor. Capacity range describes supported configurations; the score remains anchored to the reviewed reference configuration, not the largest stack. Scored model: LUNA2000-5/7/.../21-S1 (Smart String ESS, up to 20.7 kWh/tower) · checked 2026-06-16. Evidence.
Sources & references · checked 2026-08-07
Strong evidence coverage
23 of 27 scored criteria link directly to a published source.
Values marked estimated, derived, or not found remain visible on the audit sheet and do not carry the same evidential weight as a linked source. Coverage measures direct links, not an independent guarantee that a claim is correct.
Record revision. LUNA2000-S1 AU regulator absence, Huawei installed-base support and iStore separation re-audited 2026-08-07
- Sourced valuesData card →
- Warranty summary15-year product warranty →
Show 4 more
- Warranty period (yrs)Warranty ↗
- _sourcesManufacturer ↗
- _sourcesManufacturer ↗
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Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
- Core scorecard evidence checked
- AU market evidence checked
- Plain-language warranty summary checked
- Series benchmark evidence checked
Scored by Solar Analytica Research
Further reading from Signals
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
LUNA2000 S1 scores 74, placing 3 of 60 in the Performance & Value class and within 2.6 points of the class leader. Its strongest scoring dimension is capacity & usability (96), running 12.5 points above the class average on this dimension. Longevity (verified) (59) is the dimension with the most room to move. Key specifications: LFP, 95% round-trip efficiency, 3.5 kW continuous output.