Warranty pick, heavy for its output
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
Signals from the data
Commercial and shaded-installations.
Weight-limited structures, roofs where every square metre has to count and tight roof space.
Top 13% of the PERC 350-400 W segment, against a median of 25 yrs.
Bottom 14% of the PERC 350-400 W segment, against a median of 55.8.
Bottom 15% of the PERC 350-400 W segment, against a median of 199.0.
Bottom 16% of the PERC 350-400 W segment, against a median of 19.90%.
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.
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.
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).
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.
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.
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.
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.
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.
- Efficiency of 19.1% matches the PERC 0-400W median
- At 190.5 W/m², this panel generates 3.7 W/m² less per unit area than PERC 0-400W median (194.2 W/m²)
- Temperature coefficient of -0.35%/°C matches the PERC 0-400W median
- At 25.0 kg, this panel is 4.5 kg heavier than the PERC 0-400W median (20.5 kg) - more demanding for installation crews
- 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
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
These answers cover the whole series. Where a figure differs, the specification above is this module's own.