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JA Solar JAM72D10-400/MB/1500V
JA Solar Brand review

JAM72D10-400/MB/1500V

400 Wp PERC Bifacial 70%
ComparePV verdict

Warranty pick, modest efficiency

Rank 12,289 of 14,129
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 9%
Efficiency (%)
19.50
Weak · bottom 5%
Density (Wp/m²)
195.4
Weak · bottom 6%
Temp (%/°C)
-0.354
Weak · bottom 20%
Weight (kg)
25.0
Weak · 3.0 kg above median
Warranty (yrs)
30
Strong · top 17%

JA Solar JAM72D10 390-410/MB/1500V bifacial modules are designed to truly increase energy yield, even under non-ideal roof or ground conditions. Featuring a double glass construction, these modules utilize mono PERC cells and half-cell technology to minimize losses from micro-cracks and hotspots, while improving performance under partial shading - a key advantage for installations near chimneys, roof terraces, or with variable light incidence angles.

The key advantage of this series is its dual-sided operation. By harnessing reflected light from a light-colored surface (e.g., roof membrane, gravel, concrete), these modules achieve higher energy output without increasing installation area. Designed for modern 1500V strings, they facilitate cable management and voltage drop optimization in large-scale projects.

This is an excellent choice for commercial and industrial installations, utility-scale PV farms, and flat roofs, where reliability, durability, and predictable long-term performance are paramount.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 19.50% 20.60% Weak · bottom 5% 12,751
Power density 195.4 206.2 Weak · bottom 6% 12,717
Temperature coefficient -0.354 -0.350 Weak · bottom 20% 12,365
Weight per kWp 62.5 53.0 Weak · bottom 5% 12,876
Performance warranty 30 yrs 25 yrs Strong · top 17% 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 6 caution
Best for

Commercial and shaded-installations.

Not ideal for

Tight roof space, weight-limited structures and roofs where every square metre has to count.

Strengths
30 year performance warranty

Top 17% of the PERC 400-450 W segment, against a median of 25 yrs.

Watch-outs
19.50% module efficiency

Bottom 5% of the PERC 400-450 W segment, against a median of 20.60%. Ranked 12,751st in the whole database.

62.5 kg per kWp

Bottom 5% of the PERC 400-450 W segment, against a median of 53.0. Ranked 12,876th in the whole database.

195.4 watts per square metre

Bottom 6% of the PERC 400-450 W segment, against a median of 206.2. Ranked 12,717th in the whole database.

What owners get
BNEF Tier-1 bankable manufacturer

JA Solar has maintained BNEF Tier-1 status continuously and, as of Q1 2026, ranks among manufacturers exceeding 80 GW of annual shipments. Tier-1 bankability simplifies project financing with commercial banks without requiring additional module-level due diligence - a key factor for commercial and utility-scale projects.

Bifacial double glass, 70% bifaciality

The double glass construction with 70% bifaciality (±5%) enables rear-side energy generation - particularly effective over high-albedo surfaces (TPO membrane, gravel, concrete). In ground-mounted installations, this can realistically deliver 5-15% additional annual yield versus a monofacial equivalent at the same footprint.

Half-cut MBB PERC, 144 cells

The half-cut layout (144 cells, 6×24) combined with MBB (Multi-Busbar) technology reduces series resistance and susceptibility to microcracks, lowering losses under partial shading and improving performance at elevated temperatures (NOCT 45±2°C).

1500 V DC system voltage

Support for 1500 V DC (IEC) allows more modules per string, reducing BoS costs (cabling, protection devices) and voltage drop losses in commercial and utility-scale PV installations above 100 kWp.

30-year linear power warranty

The manufacturer provides a 30-year linear power warranty alongside a 12-year product warranty - a premium standard for commercial and industrial projects that supports long-cycle financing models across the full asset lifetime.

Trade-offs
Series discontinued (2022)

The JAM72D10 390-410/MB series ceased production in 2022. Availability of new modules is limited to distributor stock; sourcing replacement components (frames, junction boxes) is increasingly difficult, and JA Solar's technical support for this generation is restricted.

Lower efficiency vs. current peers

The series peaks at 20.0% efficiency, while currently available peer comparables reach 20.4% (VDS-S144/FNH), 21.0% (Sunket SKT410~430), and 21.33% (Luxor Eco Line N-type TOPCon). The 0.4-1.33 pp gap translates to measurably lower watts per m² for the same installation footprint.

PERC vs. N-type TOPCon peers

Mono PERC cells are a generation behind the N-type TOPCon technology offered by competing series (e.g., Luxor Eco Line). N-type cells exhibit lower LID (Light Induced Degradation), a better temperature power coefficient, and superior low-irradiance performance.

Notes from the database
  • At 19.5% efficiency, this panel is 1.1pp below the PERC 400-450W median of 20.6%
  • 195.4 W/m² power density is 10.8 W/m² below PERC 400-450W median (206.2 W/m²) - requires larger installation area
  • At -0.35%/°C, hot weather performance is typical for PERC 400-450W panels
  • At 25.0 kg, this panel is 3.0 kg heavier than the PERC 400-450W median (22.0 kg) - more demanding for installation crews
  • Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.50 % Weak Segment median 20.60%
Vmpp · Impp 42.02 V · 9.52 A Operating point at max power
Voc · Isc 49.57 V · 10.14 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2037×1005×30 mm · 2.05 m² of roof
Weight 25.0 kg Weak Weak · 3.0 kg above median
Cells 144 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.354 %/°C Weak bottom 20% of its segment
Coefficient Voc · Isc -0.272 · 0.044 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Strong top 17% · median 25 yrs
End-of-warranty output 83.0 % Equals 332 W guaranteed
Degradation 2.50 → 0.50 % 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
-
With bifacial gain
-

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

Heat losses
-0.354 %/°C against a segment median of -0.350
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
JA Solar JAM72D10-400/MB/1500V 400 W 19.50% -0.354 25.0 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +40 W, cooler, +3.6 pp
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, cooler, +3.6 pp
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg +50 W, cooler, +3.5 pp
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, cooler, +3.5 pp
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, cooler, +3.5 pp
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg +50 W, cooler, +3.5 pp
JAM72D10-390/MB/1500V 390 W 19.10% -0.354 25.0 kg -10 W, -0.4 pp
JAM72D10-395/MB/1500V 395 W 19.30% -0.354 25.0 kg Very close match
JAM72D10-405/MB/1500V 405 W 19.80% -0.354 25.0 kg +0.3 pp
JAM72D10-410/TB/1500V 410 W 20.00% -0.310 25.0 kg +10 W, cooler, +0.5 pp
JAM72D10-415/MB/1500V 415 W 20.30% -0.354 25.0 kg +15 W, +0.8 pp
JAM72D10-420/MB/1500V 420 W 20.50% -0.354 25.0 kg +20 W, +1.0 pp
MS480NC-HJTPBFT 480 W 22.10% -0.260 23.0 kg +80 W, cooler, +2.6 pp
MS475NC-HJTPBFT 475 W 21.90% -0.260 23.0 kg +75 W, cooler, +2.4 pp
430W 430 W 21.62% -0.350 22.0 kg +30 W, lighter, +2.1 pp
MS470NC-HJTPBFT 470 W 21.60% -0.260 23.0 kg +70 W, cooler, +2.1 pp

Found 30 panels of the same or similar size to this one, within ±10 mm. See them here Found 56 panels of the same or similar size to this one, within ±25 mm. See them here Found 222 panels of the same or similar size to this one, within ±50 mm. See them here Found 824 panels of the same or similar size to this one, within ±100 mm. See them here

About the JAM72D10 390-410/MB/1500V Series series

6 answered

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

Is the JA Solar JAM72D10 390-410/MB/1500V series still available for purchase?
The JAM72D10 390-410/MB/1500V series has been discontinued by JA Solar and is no longer in production. Limited stock may still be available through distributors with remaining inventory. Availability should be verified directly with the seller before committing to a project. For new installations, JA Solar offers newer series with higher wattage and improved cell technology.
What is the warranty on JA Solar JAM72D10 390-410/MB panels?
JA Solar provides a 12-year product warranty covering material defects and workmanship, along with a 30-year linear power output warranty. After 30 years of operation, the panel is guaranteed to retain at least 80.7% of its nominal rated power. This is one of the longer warranty packages available in the bifacial module segment, reflecting confidence in the double glass construction.
What does bifacial mean for the JAM72D10 and how much extra energy can I expect from the rear side?
Bifacial means the module generates power from both the front and rear surfaces - the rear side harvests light reflected from the ground (white TPO membrane, gravel, concrete, snow). For the JAM72D10 series, JA Solar specifies a rear-side bifacial gain of 5-25%, depending on ground albedo and tilt angle. The best results come from elevated mounting configurations, such as flat rooftop ballasted systems or ground-mount arrays.
Does the double glass design of the JAM72D10 make installation significantly harder due to extra weight?
Double glass modules are heavier than standard backsheet modules. The JAM72D10 390-410/MB weighs approximately 26-27 kg at dimensions of 2015×1002 mm, typically requiring two installers on the rooftop. The tradeoff is substantially better mechanical durability - the module withstands static loads up to 5400 Pa on the front and 2400 Pa on the rear, making it well-suited for high-wind or high-snow-load environments.
Are the JAM72D10 390-410/MB/1500V panels compatible with standard string inverters?
This series is rated for a 1500 V DC system voltage, which requires an inverter with a 1500 V maximum input. Older 1000 V string inverters used in smaller residential systems are not compatible. The 1500 V architecture allows longer strings with more modules per MPPT input, reducing BoS costs and resistive losses - a configuration standard in commercial, industrial, and utility-scale PV projects.
How does the half-cut cell layout in the JAM72D10 help when part of the roof is shaded?
The JAM72D10 uses 144 half-cut PERC cells, which halves the current per cell string, reducing resistive and thermal losses. Under partial shading - for example from a chimney or parapet - the shaded section has less impact on output from the unshaded half of the module. This translates to measurably better daily energy yield on rooftops where complete shade avoidance is not achievable.
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