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JA Solar JAM54S40-415/GR/1500V
JA Solar Brand review

JAM54S40-415/GR/1500V

415 Wp N-type
ComparePV verdict

Middle of its segment, short guarantee

Rank 11,485 of 14,129
Compare panels Datasheet PDF
Power (Wp)
415
Weak · bottom 13%
Efficiency (%)
21.30
Weak · bottom 19%
Density (Wp/m²)
212.5
Weak · bottom 17%
Temp (%/°C)
-0.300
Weak · bottom 25%
Weight (kg)
21.5
Typical · median 22.0 kg
Warranty (yrs)
25
Weak · bottom 11%

The JA Solar JAM54S40 410-435/GR/1500V series is designed for maximum yield from limited rooftop surfaces - compact modules featuring a modern cell architecture and high efficiency in real-world conditions. The use of N-type TOPCon cells helps limit performance degradation over time, translating to more predictable energy production year after year. The 108-cell format construction supports better performance under partial shading and reduces the risk of losses caused by micro-shading from chimneys, window frames, or railings.

In practice, these panels simplify installation design - thanks to their compatibility with modern inverters and strings, as well as the 1500 V standard, which is particularly important in larger systems. This is an excellent choice for both residential and commercial installations, where aesthetics (options with elegant finishes), stable performance in hot weather, and robust construction for operation in harsher atmospheric conditions matter. This product stands out from the competition by combining TOPCon technology, practical format, and finely tuned operational parameters without compromising on installation.

Ranking

322 panels in the segment N-type 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.30% 21.95% Weak · bottom 19% 8,585
Power density 212.5 218.4 Weak · bottom 17% 8,858
Temperature coefficient -0.300 -0.290 Weak · bottom 25% 6,152
Weight per kWp 51.8 51.2 Typical 5,203
Performance warranty 25 yrs 30 yrs Weak · bottom 11% 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

4 positive · 5 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Owners who want a long output guarantee, roofs where every square metre has to count and tight roof space.

Watch-outs
25 year performance warranty

Bottom 11% of the N-type 400-450 W segment, against a median of 30 yrs.

212.5 watts per square metre

Bottom 17% of the N-type 400-450 W segment, against a median of 218.4.

21.30% module efficiency

Bottom 19% of the N-type 400-450 W segment, against a median of 21.95%.

What owners get
N-type TOPCon: low temperature coefficient

N-type TOPCon cells deliver a temperature coefficient of Pmax of -0.30 %/°C versus a typical -0.35 %/°C for PERC modules. Under real-world summer heat conditions, this translates to several additional percentage points of annual yield compared to previous-generation modules. The N-type architecture also eliminates LID (Light-Induced Degradation), which historically suppressed output during the first months of operation in P-type panels.

Global #1 manufacturer, BNEF Tier 1

JA Solar ranked #1 in the Wood Mackenzie Global Solar Module Manufacturer ranking for H1 2025, scoring 91.7/100, with a production capacity exceeding 100 GW per year. Continuous BNEF Tier 1 status ensures project bankability and guarantees module availability and warranty coverage throughout the full 25-year system lifetime.

Up to 22.3% efficiency - top of peer segment

The highest-power variant reaches 22.3% module efficiency, marginally outperforming direct competitors in this power class: ZNShine ZXM7-UHLDD108 (22.28%), Luxen LUXPOWER N5 (22.28%), and Solitek SOLID Blackstar (22.27%). For roof space-constrained installations, each 0.1 pp of efficiency gains translates to meaningful additional generation without adding another panel.

108 half-cut cells + 1500 V DC

The 108 half-cut cell format (182 mm wafer) reduces resistive losses and limits the impact of partial shading from chimneys, dormers, or railings - each half-cell operates semi-independently. The 1500 V system voltage enables longer string configurations, fewer MPPT inputs, and lower BoS costs, simplifying inverter selection for both commercial and larger residential systems.

Trade-offs
Monofacial only - no bifacial gain

The JAM54S40 GR is a monofacial module with no rear-side power generation. In installations over high-albedo surfaces (gravel, snow, white TPO membrane), bifacial equivalents in the same power class typically deliver 5-15% additional energy yield. Even within JA Solar's own lineup, the JAM54D40 series offers a bifacial variant with comparable front-side cell specifications.

12-year product warranty - below current benchmark

The series carries a 12-year product (workmanship) warranty, while newer JA Solar lines - such as the JAM54D40 LB BF 15Y - already include a 15-year product warranty. Over a 25-year system lifetime, the 3-year gap in coverage is a meaningful factor for investors evaluating TCO and residual warranty risk during the second decade of operation.

Notes from the database
  • At 21.3% efficiency, this panel is 0.6pp below the N-type 400-450W median of 21.9%
  • At 212.5 W/m², this panel generates 5.9 W/m² less per unit area than N-type 400-450W median (218.4 W/m²)
  • Temperature coefficient of -0.30%/°C matches the N-type 400-450W median
  • #8585 for efficiency, #6152 for temperature performance out of 14129 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 415 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.30 % Weak Segment median 21.95%
Vmpp · Impp 31.59 V · 13.14 A Operating point at max power
Voc · Isc 37.92 V · 14.02 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 21.5 kg Typical Typical · median 22.0 kg
Cells 108 · N-type Monocrystalline
Coefficient Pmax -0.300 %/°C Weak bottom 25% of its segment
Coefficient Voc · Isc -0.260 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Weak bottom 11% · median 30 yrs
End-of-warranty output 84.8 % Equals 363 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.300 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
JA Solar JAM54S40-415/GR/1500V 415 W 21.30% -0.300 21.5 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +50 W, +2.5 pp, +5 yr warranty
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg +50 W, +2.5 pp, +5 yr warranty
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg +45 W, +2.3 pp, +5 yr warranty
LX-465M/182R188-108+ GG 465 W 23.60% -0.290 24.5 kg +50 W, +2.3 pp, +5 yr warranty
JST-EDMH-(445-465)W-TD (460W class) 460 W 23.56% -0.300 20.5 kg +45 W, +2.3 pp, +5 yr warranty
LX-460M/182R-96+ GG 460 W 23.55% -0.260 23.5 kg +45 W, +2.2 pp, +5 yr warranty
PS-MNB108(HCBF)-460W 460 W 23.53% -0.290 20.5 kg +45 W, +2.2 pp, +5 yr warranty
JAT54S40-460/LR 460 W 23.50% -0.260 19.3 kg +45 W, +2.2 pp, +5 yr warranty
JAM54S31-380/MR 380 W 19.50% -0.350 19.5 kg -35 W, hotter, -1.8 pp
JAM54S31-385/MR 385 W 19.70% -0.350 19.5 kg -30 W, hotter, -1.6 pp
JAM54D30-390/MB/1500V 390 W 19.90% -0.350 23.6 kg Hotter, -1.4 pp, +5 yr warranty
JAM54S31-390/MR 390 W 20.00% -0.350 19.5 kg -25 W, hotter, -1.3 pp
JAM54D30-395/MB/1500V 395 W 20.20% -0.350 23.6 kg Hotter, -1.1 pp, +5 yr warranty
JAM54S31-395/MR 395 W 20.20% -0.350 19.5 kg -20 W, hotter, -1.1 pp
JAM54S30-400/MR 400 W 20.50% -0.350 19.5 kg Hotter, lighter, -0.8 pp
JAM54D30-400/MB/1500V 400 W 20.40% -0.350 23.6 kg Hotter, -0.9 pp, +5 yr warranty
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +95 W, cooler, +3.7 pp

Found 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1928 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here

About the JAM54S40 410-435/GR/1500V series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What warranty comes with the JA Solar JAM54S40 410-435/GR/1500V series?
JA Solar provides a 12-year product warranty covering material and workmanship defects, plus a 25-year linear power output warranty. At the end of the 25-year period, modules are guaranteed to retain at least 84.8% of their original rated power. Actual warranty service conditions depend on the authorized distributor in your region.
What is N-type TOPCon technology and how does it compare to standard PERC modules?
TOPCon (Tunnel Oxide Passivated Contact) uses a thin tunnel oxide layer to suppress charge carrier recombination, delivering higher efficiency and a lower annual degradation rate than conventional PERC cells. In real-world terms, you get more energy from the same roof area and more predictable output over the full 25-year warranty period - an important factor when modeling the financial return of a solar installation.
How well do the JAM54S40 435W panels handle partial shading from chimneys or dormers?
The 108 half-cut cell format splits each module into two independent electrical sections. Shading from a chimney, dormer, or railing affects only the shaded section, leaving the rest of the module producing at full capacity. This is a meaningful advantage over full-cell modules, where even a small shadow across a single bypass diode zone can significantly reduce output for an entire string.
Do the JAM54S40 GR panels lose significant power output in hot summer weather?
N-type TOPCon cells carry a power temperature coefficient of approximately -0.30 %/°C, which is lower than the -0.35 %/°C typical of PERC. At a module operating temperature of 70°C on a hot day, the TOPCon panels lose measurably less power. Across a full year this can translate to tens of additional kWh compared to an equivalent PERC installation of the same rated capacity.
Are the JAM54S40 410-435/GR/1500V modules compatible with common residential string inverters?
Yes. The 1500 V system voltage rating allows longer strings, which is particularly valued in larger prosumer and commercial systems. The modules are compatible with string inverters from major brands (Fronius, SMA, Huawei, SolarEdge, and others) that support input voltages up to 1000 V or 1500 V. Always verify the MPPT voltage range of your chosen inverter against the module's Voc and Vmpp specifications before system design.
What are the dimensions and weight of the JA Solar JAM54S40 435W panel - will it fit on a standard pitched roof?
The JAM54S40 series measures approximately 1722 × 1134 × 30 mm and weighs around 21-22 kg, which is typical for 108-cell half-cut modules. A standard pitched roof section of 30 m² can accommodate roughly 12-14 panels, yielding a system in the 5-6 kWp range at 435 Wp per module. The compact, lightweight format simplifies handling on the roof and is compatible with common aluminum racking systems.
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