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Performance & Value

LUNA2000 S1

6.9–20.7 kWh · LFP · DC-coupled

HuaweiReleased 2023

68/ 100

Very good

Global

LFP100% UsableVPP-Ready

The verdict. In our Performance & Value class, Huawei LUNA2000 S1 leads on capacity & usability. Home-battery reliability is rarely independently verified, so judge on chemistry, safety certification and the backing company.

11thof 76 in Performance & ValueTop quarterclass average 63.0
Compare this battery →Ask Watt →

The assessment

How it scores, by category

Capacity & Usability96
Power & Efficiency56
Longevity (verified)48
Safety & Chemistry82
Guarantee & Backbone66
Energy Ecosystem71

Market position

11thof 76 in Performance & ValueTop quarter
486876

Our reading

LUNA2000 S1 scores 68, placing 11 of 76 in the Performance & Value class against a class average of 63.0. Its strongest scoring dimension is capacity & usability (96), running 12.9 points above the class average on this dimension. Longevity (verified) scores 48, the lowest pillar for this product. The class average on longevity (verified) is 58. Key specifications: LFP, 3.5 kW continuous output.

Dietreich Farquharson · review.solar

The data

Chemistry
LFP
Power
3.5kW
Round-trip
Not recorded
Cycle life
Not recorded
Technology architecture

DC-coupled battery

Architecture guide

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
Architecture describes the product boundary. It is not a system design or an equipment-pairing decision.

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 source
Before you buy
Local positionUse a market view to check local availability, approvals and warranty scope.
Ask the installerWhat usable capacity, backup power and warranted operating conditions will the installed LUNA2000 S1 configuration deliver?

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 2026-09-01

Strong evidence coverage

23 of 23 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 exact specification, 2026 safety claim, current non-European and European V1.2 warranties, Huawei audited 2025 report, AU catalogue, CER export and iStore identity boundary rechecked 2026-08-23; unsupported RTE and expired performance terms removed. First-market US overlay review 2026-09-01: official United States catalogues recorded; existing Australian and German overlays and scores unchanged.

Change ledger

Product record history

5 changes to this record · 152 products changed in this update
  1. Evidence added

    US Certifications

    Before
    Not previously recorded
    After
    US market evidenceUS market evidence+1 in JSON record
  2. Evidence added

    US Status

    Before
    Not previously recorded
    After
    unavailable
    US market evidenceUS market evidence+1 in JSON record
  3. Record updated

    Source revision

    Current text
    LUNA2000 S1 exact specification, 2026 safety claim, current non-European and European V1.2 warranties, Huawei audited 2025 report, AU catalogue, CER export and iStore identity boundary rechecked 2026-08-23; unsupported RTE and expired performance terms removed. First-market US overlay review 2026-09-01: official United States catalogues recorded; existing Australian and German overlays and scores unchanged.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Primary datasheet
  4. Evidence added

    US Evidence sources

    Before
    Not previously recorded
    After
    https://solar.huawei.com/de/products/luna2000-7-14-21-s1/; https://solar.huawei.com/us/; https://solar.huawei.com/us/products/luna2000-7-14-21-s1/
    US market evidenceUS market evidence+1 in JSON record
  5. Evidence added

    US Support Note

    Before
    Not previously recorded
    After
    solar.huawei.com/us and the LUNA2000 /us/ product path open a 404 page. No United States catalogue names LUNA2000-7-S1.
    US market evidenceUS market evidence+1 in JSON record
8 changes to this record · 78 products changed in this update
  1. Evidence added

    State

    Before
    Not previously recorded
    After
    reviewed_absence
    Primary datasheet
  2. Evidence added

    Value

    Before
    Not previously recorded
    After
    Reviewed 2026-08-25: no exact-product battery/DC round-trip efficiency with a complete measurement boundary was established in the reviewed primary source set. This is a scoped reviewed absence, not proof that the value has never been measured.
    Primary datasheet
  3. Evidence added

    Confidence

    Before
    Not previously recorded
    After
    high
    Primary datasheet
  4. Evidence added

    State

    Before
    Not previously recorded
    After
    reviewed_absence
    Primary datasheet
  5. Evidence added

    Evidence sources

    Before
    Not previously recorded
    After
    https://solar.huawei.com/en/products/luna2000-7-14-21-s1/specs/
    Primary datasheet
  6. Evidence added

    Value

    Before
    Not previously recorded
    After
    Reviewed 2026-08-25: no exact-product cycle-life result to exactly 70% retained capacity was established in the reviewed primary source set. Warranty limits and other or unstated endpoints are not converted. This is a scoped reviewed absence.
    Primary datasheet
  7. Evidence added

    Evidence sources

    Before
    Not previously recorded
    After
    https://solar.huawei.com/en/products/luna2000-7-14-21-s1/specs/
    Primary datasheet
  8. Evidence added

    Confidence

    Before
    Not previously recorded
    After
    high
    Primary datasheet
24 changes to this record · 34 products changed in this update
  1. Evidence removed

    Round-trip efficiency (%): Evidence sources

    Before
    After
    No longer recorded
    No direct source binding recorded
  2. Record updated

    Warranty period (yrs)

    Before
    15
    After
    10
    Warranty period (yrs)Warranty period (yrs)+3 in JSON record
  3. Evidence removed

    End-of-warranty retained capacity (%)

    Before
    60
    After
    No longer recorded
    Warranty assurance
  4. Evidence removed

    Warranty throughput: Evidence sources

    Before
    https://ske-solar.com/fileadmin/skefiles/09_Helpers/01_EU_Warranty_conditions_distributor_Version_UPDATED__2024_03-01_EN.pdf
    After
    No longer recorded
    Warranty throughputsuperseded
  5. Record updated

    AU Warranty scope

    Current text
    Huawei's active non-European V1.2 policy provides 10 years for residential ESS, with years 6-10 dependent on FusionSolar connectivity. The expired 2025 Australian 15-year row is not a current blanket promise; contract and serial verification control installed units.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Warranty period (yrs)Primary datasheet+8 in JSON record
  6. Record updated

    Global score

    Before
    73.7
    After
    68.1
    Primary datasheet
  7. Evidence removed

    Warranty throughput

    Before
    2.5-5 MWh warranted per kWh usable
    After
    No longer recorded
    Warranty throughputsuperseded
  8. Record updated

    Manufacturing track record: Evidence sources

    Before
    After
    https://solar.huawei.com/au/news/2021/news-20210518/; https://solar.huawei.com/en/products/luna2000-7-14-21-s1/specs/; https://www.huawei.com/en/annual-report/2025
    Primary datasheetFinancial strength & warranty backing+1 in JSON record
  9. Evidence removed

    Warranty degradation guarantee: Evidence sources

    Before
    https://solar.huawei.com/admin/asset/v1/pro/view/d373d9834172413b85d346e1f691915d.pdf
    After
    No longer recorded
    Warranty assurance
  10. Record updated

    Warranty period (yrs): Evidence sources

    Before
    https://solar.huawei.com/admin/asset/v1/pro/view/b53be6963ac248989e9271feb858358e.pdf; https://solar.huawei.com/admin/asset/v1/pro/view/d373d9834172413b85d346e1f691915d.pdf; https://solar.huawei.com/en/support/warranty/
    After
    https://solar.huawei.com/admin/asset/v1/pro/view/0037bf38d384473ea477e3ebf9c8f6df.pdf; https://solar.huawei.com/admin/asset/v1/pro/view/b53be6963ac248989e9271feb858358e.pdf; https://solar.huawei.com/en/products/luna2000-7-14-21-s1/specs/; https://solar.huawei.com/en/support/warranty/
    Warranty period (yrs)Warranty period (yrs)+3 in JSON record
  11. Record updated

    Longevity (verified) pillar score

    Before
    59.4
    After
    48.4
    Primary datasheet
  12. Evidence removed

    Round-trip efficiency (%): Evidence status

    Before
    sourced
    After
    No longer recorded
    No direct source binding recorded
  13. Evidence removed

    Warranty degradation guarantee: Evidence status

    Before
    sourced
    After
    No longer recorded
    Warranty assurance
  14. Evidence removed

    End-of-warranty retained capacity (%): Evidence status

    Before
    sourced
    After
    No longer recorded
    Warranty assurance
  15. Record updated

    Source revision

    Before
    LUNA2000-S1 AU regulator absence, Huawei installed-base support and iStore separation re-audited 2026-08-07
    After
    LUNA2000 S1 exact specification, 2026 safety claim, current non-European and European V1.2 warranties, Huawei audited 2025 report, AU catalogue, CER export and iStore identity boundary rechecked 2026-08-23; unsupported RTE and expired performance terms removed.
    Primary datasheet
  16. Evidence removed

    Warranty throughput: Evidence status

    Before
    sourced
    After
    No longer recorded
    Warranty throughputsuperseded
  17. Evidence removed

    Round-trip efficiency (%)

    Before
    95
    After
    No longer recorded
    No direct source binding recorded
  18. Evidence removed

    End-of-warranty retained capacity (%): Evidence sources

    Before
    https://solar.huawei.com/admin/asset/v1/pro/view/d373d9834172413b85d346e1f691915d.pdf
    After
    No longer recorded
    Warranty assurance
  19. Evidence removed

    Warranty degradation guarantee

    Before
    End-point only: minimum capacity at end of warranty term
    After
    No longer recorded
    Warranty assurance
  20. Record updated

    AU Evidence sources

    Before
    https://cer.gov.au/document/cec-approved-inverters-0; https://cer.gov.au/document/cec-approved-solar-batteries-0; https://istore.net.au/blog/2024/03/21/istore-batteries-compatible-with-huawei-l1-hybrid-inverters-2/; https://solar.huawei.com/admin/asset/v1/pro/view/b53be6963ac248989e9271feb858358e.pdf; https://solar.huawei.com/admin/asset/v1/pro/view/d373d9834172413b85d346e1f691915d.pdf; https://solar.huawei.com/au/residential/; https://solar.huawei.com/au/support/; https://solar.huawei.com/en/products/luna2000-7-14-21-s1/specs/; https://solar.huawei.com/en/support/warranty/
    After
    https://cer.gov.au/document/cec-approved-solar-batteries-0; https://istore.net.au/blog/2024/03/21/istore-batteries-compatible-with-huawei-l1-hybrid-inverters-2/; https://solar.huawei.com/admin/asset/v1/pro/view/b53be6963ac248989e9271feb858358e.pdf; https://solar.huawei.com/au/products/residential/; https://solar.huawei.com/en/support/warranty/
    Warranty period (yrs)AU market evidence+8 in JSON record
  21. Record updated

    Financial strength & warranty backing: Evidence sources

    Before
    After
    https://solar.huawei.com/au/news/2021/news-20210518/; https://solar.huawei.com/en/products/luna2000-7-14-21-s1/specs/; https://www.huawei.com/en/annual-report/2025
    Primary datasheetFinancial strength & warranty backing+1 in JSON record
  22. Record updated

    Power & Efficiency pillar score

    Before
    75.5
    After
    55.8
    Primary datasheet
  23. Record updated

    Verified reliability

    Before
    Not independently tested
    After
    Tested - pass
    Verified reliabilityPrimary datasheet+1 in JSON record
  24. Record updated

    Verified reliability: Evidence sources

    Before
    After
    https://solar.huawei.com/admin/asset/v1/pro/view/8da96b44831242eea1ddc3f4bf94a518.pdf; https://solar.huawei.com/en/news/2026/luna2000_s1-safety-mark/; https://solar.huawei.com/en/products/luna2000-7-14-21-s1/specs/
    Verified reliabilityPrimary datasheet+1 in JSON record

This is review.solar's publication history. It does not claim the product changed on the recorded date, and it excludes compatibility, system pairing, installation suitability and relative leaderboard prose. Open the complete JSON record.

Evidence timeline

Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.

  1. Core scorecard evidence checked
  2. US market evidence checked
  3. AU market evidence checked
  4. DE market evidence checked
  5. Series benchmark evidence checked
  6. Plain-language warranty summary checked

Evidence record (JSON)

Scored by Solar Analytica Research

Further reading from Findings

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