Solar panels

JA Solar DeepBlue 4.0 Pro

Name: JA Solar DeepBlue 4.0 Pro
Brand: JA Solar

440–540 W · 29 versions · best for hot roofs: low heat loss

8.2Very good#4 of 22 panel series we rank · EnergyUpgrade Score out of 10

4.8 out of 5 from 895 owner reviews of JA Solar solar panels

Efficiency: 23.9%
Temp. coeff.: -0.26%/°C
Year 25: 90.6%

Get quotes for this Datasheet Manufacturer's copy

Why it scores 8.2.

Rated on JAT60S41-xxx/LR, its best home version. Each part comes from the datasheet with a published rule; anything not stated scores zero.

How we rate solar panels

Output guaranteed at year 25
8.2 · 25%
What the panel promises to still produce after 25 Australian summers. It compounds every year.
Rule: Worked out from the datasheet's first-year and annual degradation: 84% scores 0, 92% scores 10.
Product warranty
7.5 · 25%
Covers defects in the panel itself. Twelve years is the floor; the best give 25 or more.
Rule: Years of product warranty: 10 scores 0, 30 scores 10.
Heat performance
8.6 · 20%
Panels lose output as they heat up, and roof panels often pass 65°C in summer.
Rule: Temperature coefficient of Pmax: -0.38%/°C scores 0, -0.24%/°C scores 10.
Efficiency
7.6 · 20%
More watts from each square metre, which matters most on small or broken-up roofs.
Rule: Highest module efficiency in the range: 20.5% scores 0, 25% scores 10.
Performance warranty length
10.0 · 10%
How long the output guarantee runs.
Rule: Years: 25 scores 0, 30 scores 10.

Full specifications.

For JAT60S41-xxx/LR, the version we rate. 135 approved models · Australian datasheet

Power: 520–530 W
Highest efficiency: 23.9%
Temperature coefficient (Pmax): -0.26%/°C
First-year degradation: 1%
Annual degradation after year 1: 0.35%
Output at year 25 (our calculation): 90.6%
Product warranty: 25 years
Performance warranty: 30 years
Cell technology: Half-Cell
Size: 1953 × 1134 mm
Weight: 23.5 kg
All-black look: Yes

Every version (29).

Same series in different sizes, finishes or generations. Check which version is on your quote.

JAT60S41-xxx/LR
520–530 W · the version we rate
8.2
Efficiency: 23.9%Temp. coeff.: -0.26%/°CYear 25: 90.6% Datasheet
JAT54S41-xxx/LR
465–475 W
8.1
Efficiency: 23.8%Temp. coeff.: -0.26%/°CYear 25: 90.6% Datasheet
JAM54D40-xxx/LR/AU
470–475 W
7.3
Efficiency: 23.8%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAT60S40-xxx/LR
530–540 W
7.1
Efficiency: 24.4%Temp. coeff.: -0.26%/°CYear 25: 90.6% Datasheet
JAM54D41-xxx/LR
445–465 W
7.1
Efficiency: 23.3%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAT54S40-xxx/LR
475–485 W
7.1
Efficiency: 24.3%Temp. coeff.: -0.26%/°CYear 25: 90.6% Datasheet
JAM54D40-xxx/LB
440–475 W
6.1
Efficiency: 23.8%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM54D40-xxx/LR
460–475 W
6.1
Efficiency: 23.8%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM60S40-xxx/LR
485–515 W
5.8
Efficiency: 23.3%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM54S40-xxx/LR
440–475 W
5.7
Efficiency: 23.0%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM54D41-xxx/LB
440–455 W
5.6
Efficiency: 22.8%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM54S42-xxx/LR
475–480 W
5.6
Efficiency: 22.7%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM54S43-xxx/LR
470–475 W
5.5
Efficiency: 22.5%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM60D40-xxx/LB
490–515 W
5.5
Efficiency: 23.3%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM54S41-xxx/LR
440–445 W
5.4
Efficiency: 22.3%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM60D41-xxx/LB
495–505 W
5.2
Efficiency: 22.8%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM60S42-xxx/LR
535–545 W · commercial
5.8
Efficiency: 23.3%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM66D45-xxx/LB
600–650 W · commercial
5.8
Efficiency: 24.1%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM72D40-xxx/LB
590–620 W · commercial
5.5
Efficiency: 23.4%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM60D42-xxx/LB
515–545 W · commercial
5.5
Efficiency: 23.3%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM72D42-xxx/LB
625–650 W · commercial
5.5
Efficiency: 23.3%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM66D42-xxx/MB
580–600 W · commercial
5.4
Efficiency: 23.2%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM66D46-xxx/LB
710–720 W · commercial
5.4
Efficiency: 23.2%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM72D40-xxx/MB
570–610 W · commercial
5.3
Efficiency: 23.0%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM72D40-xxx/GB
560–580 W · commercial
5.1
Efficiency: 22.5%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM72S40-xxx/MR
595–615 W · commercial
4.7
Efficiency: 23.8%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM66S45-xxx/LR
630–635 W · commercial
4.6
Efficiency: 23.5%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM72S42-xxx/LR
635–650 W · commercial
4.5
Efficiency: 23.3%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet
JAM72S40-xxx/LR
585–600 W · commercial
4.2
Efficiency: 22.7%Temp. coeff.: -0.29%/°CYear 25: 89.4% Datasheet

About the brand

JA Solar solar panels

Consistently good panels with one of the strongest independent test records, at a mainstream price. Not the most efficient, but a safe, sensible pick.

Read the JA Solar review

7.4

Brand rating#5 of 8 brands for solar panels