Middle of its segment, heavy for its output
The JA Solar JAM72D10 405-425/TB/1500V series are bifacial glass-glass modules, designed for stable energy production not only from the front side but also from the rear side via reflected radiation-truly enhancing yield in ground-mounted installations, membrane-covered roofs, or with well-designed structures. The use of N-type monocrystalline cells translates to lower susceptibility to degradation and better performance consistency over time, which is crucial where predictable energy balance over years is key. The half-cell with multi-busbar construction helps minimize losses due to partial shading and supports higher module reliability in challenging operating conditions. A key advantage of this series is its compatibility with 1500 V systems, facilitating longer string designs and optimizing BOS components in larger installations. This is an excellent choice for PV farms, commercial projects, and investors seeking the benefits of bifacial technology without compromising on durability and parameter stability.
Ranking
Signals from the data
Commercial and shaded-installations.
Weight-limited structures, tight roof space and roofs where every square metre has to count.
Bottom 4% of the N-type 400-450 W segment, against a median of 51.2. Ranked 12,280th in the whole database.
Bottom 6% of the N-type 400-450 W segment, against a median of 21.95%. Ranked 11,389th in the whole database.
Bottom 6% of the N-type 400-450 W segment, against a median of 218.4. Ranked 11,375th in the whole database.
Bifacial modules with 70%±5% bifaciality factor deliver a real energy yield gain of 5-15% in installations on reflective surfaces (TPO membrane, light-colored gravel) compared to monofacial equivalents. The glass-glass encapsulation enhances mechanical durability and minimizes moisture ingress.
N-type cell technology eliminates Light-Induced Degradation (LID) typical of P-type PERC cells, resulting in higher actual output in the first years of operation. Annual degradation for N-type is typically <0.45%/yr vs ~0.55%/yr for PERC - over a 30-year lifespan this translates to approximately 3 percentage points more retained power.
The 1500 V system voltage enables longer string configurations (up to ~28 modules/string with a typical 1500 V inverter), directly reducing BoS costs - fewer cables, fewer combiners, and lower resistive losses. A critical feature for utility-scale PV farms and commercial installations above 100 kWp.
The series carries a 30-year linear power warranty and a 12-year product warranty. JA Solar maintains continuous BNEF Tier-1 status (confirmed on the Q2 2026 list), ensuring bankability for project financing and reducing warranty recourse risk for investors and lenders.
Half-cut cell splitting reduces resistive losses (I²R) and limits the impact of partial shading on the full string - each half-row operates independently. Multi-busbar design shortens current path length and reduces the risk of degradation from microcracks.
The JAM72D10 405-425/TB/1500V was discontinued in 2022 after only two years of production (2020-2022). This limits availability of replacement modules for system expansions, raises the risk of power mismatch if a single module needs replacing, and may complicate warranty service fulfillment for the identical product.
Maximum series efficiency is 20.8%, while direct competitors in the same segment achieve: Hyundai DG G12 PERC Shingled - 21.4%, Trina Vertex S - 21.3%, Tongwei TERRA 5K - 21.4%. The 0.5-0.6 pp gap translates to a larger required roof or land area to achieve the same peak power output.
- Efficiency of 20.5% is 1.4pp below the N-type 400-450W median (21.9%)
- Power density of 205.2 W/m² is 13.2 W/m² below N-type 400-450W median (218.4 W/m²) - needs more roof space
- Temperature coefficient of -0.31%/°C is 0.02pp worse than N-type 400-450W median (-0.29%/°C) - higher losses in summer heat
- At 25.0 kg, this panel is 3.0 kg heavier than the N-type 400-450W median (22.0 kg) - more demanding for installation crews
- Bifacial design (75% factor) captures reflected light - adds 4-11% yield on ground-mount or white roof
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 405-425/TB/1500V series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.