review.solar · Sourced values document
DeepBlue 4.0 Pro 54D40 LR/AU
470–475 W · 54-cell · N-type TOPCon · Dual-glass · Monofacial
JA Solar
Global Tier-1
Released 2026 · Evidence checked 2026-08-09 · Scored to Solar Analytica panel rubric v2.10.0
60/100
Good
Overall
Score by category
Architecture & Design
69
Efficiency & Yield
64
Durability (verified)
52
Performance & Degradation
73
Guarantee & Backbone
44
Sustainability
46
Sourced specification values
Published power range470–475 W
Scored benchmark475 W
Module efficiency23.8%
Temp. coefficient Pmax-0.29 %/°C
First-year degradation1%
Annual degradation0.4 %/yr
Product warranty15 yr
Performance warranty30 yr
EncapsulationGlass-glass (framed)
Hail resistanceIEC 61215 standard (25mm)

Some values are estimated where independent verification was not available: see the full scorecard and review.solar/terms.

Page 2 · Audit sheet: complete sourced record

DeepBlue 4.0 Pro 54D40 LR/AU · every criterion scored by the live rubric (Solar Analytica panel rubric v2.10.0), with its recorded value, evidence status, and any linked source. Page 1 carries the buying-decision summary; this page is the full record for verification and right of reply.

Architecture & Design
Cell technology tierTOPCon tierdatasheetSource
Encapsulation & frame constructionGlass-glass (framed)datasheetSource
Fire classification (IEC 61730)CertifieddatasheetSource
Efficiency & Yield
Module efficiency (%)23.8datasheetSource
Temp coefficient Pmax (%/C)-0.29datasheetSource +1
Durability (verified)
Positive loading (MQT16, Pa)5400datasheetSource
Negative loading (MQT16, Pa)2400datasheetSource
Hail resistanceIEC 61215 standard (25mm)datasheetSource
Performance & Degradation
Guaranteed end-of-warranty output (%)87.4datasheetSource
First-year degradation (%)1.0datasheetSource
Annual degradation (%/yr)0.4datasheetSource
Performance guarantee period (yrs)30datasheetSource +1
Guarantee & Backbone
Guarantee period (yrs)15datasheetSource
Guarantee assuranceParts & ServicedatasheetSource

review.solar · audit sheet · Solar Analytica panel rubric v2.10.0 · https://review.solar/cards/ja-solar-deepblue-4-pro-jam54d40-lr-au-470-475