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Global Tier-1

DeepBlue 4.0 Pro

430–455 W · 54-cell · N-type TOPCon · Bifacial · Dual-glass

JA SolarReleased 2022

73/ 100

Very good

Global

15+ Yrs Field-ProvenPVEL Top PerformerBifacialGlass-Glass

The verdict. In our Global Tier-1 class, JA Solar DeepBlue 4.0 Pro leads on architecture & design.

23thof 29 in Global Tier-1Bottom quarterclass average 73.5
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The assessment

How it scores, by category

Architecture & Design77
Efficiency & Yield71
Durability (verified)72
Performance & Degradation73
Guarantee & Backbone74
Sustainability66

Market position

23thof 29 in Global Tier-1Bottom quarter
607379

Our reading

DeepBlue 4.0 Pro scores 73, placing 23 of 29 in the Global Tier-1 class against a class average of 73.5. Its strongest scoring dimension is architecture & design (77), above the class average of 76. Sustainability scores 66, the lowest pillar for this product. The class average on sustainability is 86. Underlying specifications include a module efficiency of 22.8%, TOPCon cell architecture, 25-year product warranty backed by a 30-year performance term.

The data

Power
455W
Efficiency
22.8%
Cell
TOPCon
Temp coeff
-0.29%/°C

Performance guarantee: 30-year linear output

455 Wrated398W at yr 30
80859095100Guaranteed floor 87.4%Product 25yr87.4%0yr5yr10yr15yr20yr25yr30yr
Projected outputGuaranteed floor: 87.4% at yr 30Product warranty ends yr 25

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

406W367W

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 (1000W/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 (43°C) and temperature coefficient (-0.29%/°C), giving an estimated cell temperature of 59°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

30°C
1000 W/m²
Year1510152025
Watts406 W400 W392 W383 W375 W367 W
% of rated89.3%87.9%86.1%84.3%82.5%80.6%
Before you buy

Two things to check

Local positionUse a market view to check local availability, approvals and warranty scope.

Ask the installer: Will the quote name the exact DeepBlue 4.0 Pro model and wattage, and who covers labour if the module warranty is used?

Verification & sources

Market context

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 2026-07-16

Limited evidence coverage

8 of 28 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.

Help strengthen this record

These are published evidence gaps, not private submissions. A source is reviewed under the same methodology whether it comes from a reader, installer or manufacturer.

View the open evidence register

Evidence timeline

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

  1. Core scorecard evidence checked
  2. Series benchmark source checked
  3. AU market evidence checked
  4. Plain-language warranty summary checked

Scored by Solar Analytica Research

Further reading from Signals

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