Warranty pick, heavy for its output
The JA Solar JAM72D20 435-460/MB/1500V series is designed for achieving high efficiency in real-world operating conditions - especially where every additional percentage of energy from the same surface area counts. This module features a double-sided design with a glass-glass construction, enabling it to effectively utilize reflected light from the ground and operate more reliably year after year in demanding environments. The use of monocrystalline wafers in PERC technology and a pol- cell configuration helps minimize losses during partial shading and reduces the risk of hotspot formation, leading to safer system operation.
The 1500V version allows for longer string configurations, simplifies the DC design, and reduces equipment and installation costs - particularly in commercial and utility-scale projects. This series is an excellent choice for investors seeking modules with enhanced durability, predictable performance, and a construction better suited to withstand various loads and changing weather conditions. ([enfsolar.com](https://www.enfsław.com/pv/panel-datasheet/crystalline/49262?utm_source=openai))
Ranking
Signals from the data
Commercial and shaded-installations.
Weight-limited structures, tight roof space and roofs where every square metre has to count.
Top 17% of the PERC 400-450 W segment, against a median of 25 yrs.
Bottom 4% of the PERC 400-450 W segment, against a median of 53.0. Ranked 12,820th in the whole database.
Bottom 5% of the PERC 400-450 W segment, against a median of 20.60%. Ranked 12,663rd in the whole database.
Bottom 6% of the PERC 400-450 W segment, against a median of 206.2. Ranked 12,634th in the whole database.
The module harvests ground-reflected irradiance (albedo effect), delivering a typical bifacial gain of 5–15% depending on mounting surface. The glass-glass laminate provides superior mechanical strength (snow/wind load up to 5,400 Pa) and virtually eliminates moisture ingress compared to conventional polymer backsheets.
The 144 half-cut PERC cell layout halves the operating current per string, lowering resistive losses and improving shade tolerance. Compared to a standard 72-cell format, this configuration significantly reduces hotspot risk and maintains higher output under partial shading conditions.
Support for 1500 V system voltage enables longer strings with more modules per MPPT input, reducing DC cable runs, MC4 connector count, and overall BoS costs — an especially meaningful advantage in commercial rooftop and ground-mount projects above 100 kWp.
JA Solar guarantees at least 85% of nominal power output after 30 years, with an annual degradation rate of ≤0.55%. This is among the longer warranty terms available for PERC modules from the 2020–2022 product generation and supports favorable LCOE calculations for long-duration projects.
JA Solar maintains a continuous Tier-1 listing on the Bloomberg NEF solar module bankability ranking (confirmed Q1–Q2 2026), shipping in excess of 80 GW annually. Tier-1 status enables project financing with major international lenders and provides access to a global service and warranty support network.
The JAM72D20 435-460/MB/1500V series reached end-of-life in 2022, just two years after its 2020 launch. New units are available only through secondary market channels, making it difficult to source additional modules for capacity extensions. Official technical support for this specific model is progressively being wound down by the manufacturer.
At the same 435 Wp nameplate power, comparable current-generation modules achieve 22.27–22.28% efficiency (Luxen LUXPOWER N5, ZNShine ZXM7-UHLDD108, Solitek SOLID Blackstar). The ~2.8 percentage-point gap means the JAM72D20 requires approximately 14% more roof or ground area to deliver the same installed capacity — a meaningful constraint on space-limited projects.
The 435 Wp segment is now dominated by TOPCon and HJT modules, which offer lower LID/LETID degradation, a superior temperature coefficient (down to -0.28%/°C vs. -0.35%/°C for PERC), and higher bifacial gain factors. Specifying a PERC module in 2025–2026 represents an investment in technology that has been commercially superseded.
- At 19.5% efficiency, this panel is 1.1pp below the PERC 400-450W median of 20.6%
- Power density of 195.3 W/m² is 10.9 W/m² below PERC 400-450W median (206.2 W/m²) - needs more roof space
- Temperature coefficient of -0.35%/°C matches the PERC 400-450W median
- At 27.3 kg (5.3 kg above PERC 400-450W median of 22.0 kg), requires checking roof load capacity
- Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface
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 76 panels of the same or similar size to this one, within ±10 mm. See them here Found 335 panels of the same or similar size to this one, within ±25 mm. See them here Found 345 panels of the same or similar size to this one, within ±50 mm. See them here Found 949 panels of the same or similar size to this one, within ±100 mm. See them here