The assessment
How it scores, by category
Market position
The data
N-type TOPCon module
Produces DC electricity at the roof. It contains no system-level power conversion or storage.
- Product role
- None in the module.
- Published range
- 430–455 W
- Electrical layer
- DC module output
- Construction
- Bifacial, Dual-glass
Performance guarantee: 30-year linear output
Wattage figure based on the sourced rated power (455 W) applied to the guaranteed floor; modular/format differences aside, this is the same rated-power spec shown above.
Modelled effective output, year by year
Year 1 to year 25, at 30°C and 1000 W/m². Rated 455 W at STC.
How this is modelled
Compounds this panel’s own published first-year (1%) and annual (0.4%/yr) degradation figures against its 455 W rated (STC) output, then derates for the ambient and irradiance selected. Output is scaled roughly linearly with irradiance (1000 W/m² against the 1000 W/m² STC reference). This is the dominant real-world effect at low light, whether from cloud, shading or soiling. Output is then further derated for heat, from this panel’s own NOCT (45°C) and temperature coefficient (-0.3%/°C), giving an estimated cell temperature of 61°C at that ambient and irradiance. A datasheet-derived estimate, not a field measurement or a warranty guarantee: it does not account for this panel’s own low-light efficiency response (a separate, less-consistently-published spec), or for wind and system design. See NOCT and temperature coefficient in the glossary.
Control panel
| Year | 1 | 5 | 10 | 15 | 20 | 25 |
|---|---|---|---|---|---|---|
| Watts | 401 W | 395 W | 387 W | 379 W | 371 W | 363 W |
| % of rated | 88.2% | 86.8% | 85.0% | 83.2% | 81.5% | 79.7% |
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. The score is anchored to the highest published AU rating for this exact series. Scored model: JAM54D41-455/LB/1500V · checked 2026-07-16. Evidence.
Sources & references · checked 2026-09-04
Strong evidence coverage
26 of 26 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. DeepBlue 4.0 Pro exact JAM54D41/LB sheet and JA Solar 2025 sustainability report rechecked 2026-08-23; company scope clarified and unsupported salt Severity 1 withdrawn. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged. US overlay recheck 2026-09-04: official United States surfaces still inaccessible or missing; held not_reviewed overlays restamped; existing non-US overlays and scores unchanged.
- Sourced valuesData card →
- Warranty summary25-year product warranty →
Show 4 more
- Archived copy of the primary sourcePDF ↗
- AwardsManufacturer ↗
- Independent energy yieldIndependent test ↗
- Independent energy yieldIndependent test ↗
Product record history
3 changes to this record · 17 products changed in this update
US Support Note
- Current text
- jasolar.com returns HTTP 403 with Ws-Action bot. www.jasolar.us fails TLS because the certificate is not valid for that hostname. No official United States catalogue was retrieved. Held is not unavailable. No official United States catalogue naming JAM54D41-455/LB/1500V was retrieved. jasolar.com/html/en/ also returns HTTP 403. This is an access barrier, not a finding of unavailability. A China overlay is not opened from this pass.
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
US market evidenceUS market evidence+1 in JSON recordSource revision
- Current text
- DeepBlue 4.0 Pro exact JAM54D41/LB sheet and JA Solar 2025 sustainability report rechecked 2026-08-23; company scope clarified and unsupported salt Severity 1 withdrawn. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged. US overlay recheck 2026-09-04: official United States surfaces still inaccessible or missing; held not_reviewed overlays restamped; existing non-US 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 datasheetUS Evidence sources
- Before
- https://www.jasolar.com/; https://www.jasolar.com/html/en/
- After
- https://www.jasolar.com/; https://www.jasolar.com/html/en/; https://www.jasolar.us/
9 changes to this record · 152 products changed in this update
Source revision
- Before
- DeepBlue 4.0 Pro exact JAM54D41/LB sheet and JA Solar 2025 sustainability report rechecked 2026-08-23; company scope clarified and unsupported salt Severity 1 withdrawn.
- After
- DeepBlue 4.0 Pro exact JAM54D41/LB sheet and JA Solar 2025 sustainability report rechecked 2026-08-23; company scope clarified and unsupported salt Severity 1 withdrawn. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged.
US Evidence sources
- Before
- Not previously recorded
- After
- https://www.jasolar.com/; https://www.jasolar.com/html/en/
DE Evidence sources
- Before
- Not previously recorded
- After
- https://www.jasolar.com/; https://www.jasolar.com/html/en/
US Support Note
- Before
- Not previously recorded
- After
- jasolar.com and jasolar.com/html/en/ return HTTP 403. No usable United States or German catalogue was retrieved for JAM54D41-455/LB/1500V. This is an access barrier, not a finding of unavailability. A China overlay is not opened from this pass.
DE Support Note
- Before
- Not previously recorded
- After
- jasolar.com and jasolar.com/html/en/ return HTTP 403. No usable United States or German catalogue was retrieved for JAM54D41-455/LB/1500V. This is an access barrier, not a finding of unavailability. A China overlay is not opened from this pass.
2 changes to this record · 118 products changed in this update
Independent energy yield: Evidence sources
- Before
- https://www.jasolar.com/uploadfile/2024/0112/20240112034704258.pdf
- After
- https://scorecard.pvel.com/methodology/; https://scorecard.pvel.com/top-performers/; https://scorecard.pvel.com/wp-content/uploads/2022-PVEL-PV-Module-Reliability-Scorecard-Summary.pdf; https://scorecard.pvel.com/wp-content/uploads/2024-PV-Module-Reliability-Scorecard.pdf
Independent energy yield
- Before
- Not independently yield-tested
- After
- No public independent yield result found in reviewed sources
9 changes to this record · 34 products changed in this update
End-of-life & recycling disclosure: Evidence sources
- Before
- After
- https://www.jasolar.com/uploadfile/2024/0112/20240112034704258.pdf; https://www.jasolar.com/uploadfile/publish/events/2025_JA_Sustainability_and_ESG_Report_EN.pdf
Salt mist (IEC 61701): Evidence status
- Before
- sourced
- After
- reviewed_absence
Salt mist (IEC 61701): Evidence sources
- Before
- https://www.prnewswire.com/news-releases/ja-solar-releases-its-next-generation-module-deepblue-4-0-pro-301835340.html
- After
- https://www.jasolar.com/uploadfile/2024/0112/20240112034704258.pdf
Salt mist (IEC 61701)
- Before
- Severity 1
- After
- Not Listed
Source revision
- Before
- JA Solar AUS-EN-20230731A and Australian warranty annex reviewed 2026-08-06
- After
- DeepBlue 4.0 Pro exact JAM54D41/LB sheet and JA Solar 2025 sustainability report rechecked 2026-08-23; company scope clarified and unsupported salt Severity 1 withdrawn.
Manufacturing track record: Evidence sources
- Before
- After
- https://www.jasolar.com/uploadfile/2024/0112/20240112034704258.pdf; https://www.jasolar.com/uploadfile/publish/events/2025_JA_Sustainability_and_ESG_Report_EN.pdf
Financial strength & warranty backing: Evidence sources
- Before
- After
- https://www.jasolar.com/uploadfile/2024/0112/20240112034704258.pdf; https://www.jasolar.com/uploadfile/publish/events/2025_JA_Sustainability_and_ESG_Report_EN.pdf
2 changes to this record · 65 products changed in this update
6 changes to this record · 106 products changed in this update
Awards
- Before
- Major International Award specific to product
- After
- No longer recorded
Awards: Evidence sources
- Before
- https://www.jasolar.com/index.php?a=show&c=index&catid=399&id=198&m=content
- After
- No longer recorded
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.
- Core scorecard evidence checked
- US market evidence checked
- DE market evidence checked
- AU market evidence checked
- Series benchmark evidence checked
- Plain-language warranty summary checked
Scored by Solar Analytica Research
Stay across the benchmark.
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Our reading
DeepBlue 4.0 Pro scores 68, placing 19 of 66 in the Global Tier-1 class against a class average of 63.1. Its strongest scoring dimension is architecture & design (84), running 12.7 points above the class average on this dimension. Durability (verified) (58) is the dimension with the most room to move. Underlying specifications include a module efficiency of 22.8%, N-type TOPCon cell technology, 15-year product warranty backed by a 30-year performance term.
Dietreich Farquharson · review.solar