--- title: "JA Solar JAM72D20-435/MB/1500V 435W Solar Panel - Specs & Review | ComparePV" description: "JA Solar JAM72D20-435/MB/1500V 435W solar panel. Specs: 19.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam72d20-435-mb-1500v" updated: 2026-09-11 --- # JA Solar JAM72D20-435/MB/1500V Warranty pick, heavy for its output 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAM72D20-435/MB/1500V - **Series:** JAM72D20 435-460/MB/1500V - **Rated power:** 435 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 435 W | 410 W | Strong - top 22% | | | Module efficiency | 19.50% | 20.60% | Weak - bottom 5% | 12,663 | | Power density | 195.3 | 206.2 | Weak - bottom 6% | 12,634 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 27.3 kg | 22.0 kg | Weak - bottom 4% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.50% | 20.60% | Weak - bottom 5% | 12,663 | | Power density | 195.3 | 206.2 | Weak - bottom 6% | 12,634 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 62.8 | 53.0 | Weak - bottom 4% | 12,820 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Strengths - **30 year performance warranty** - Top 17% of the PERC 400-450 W segment, against a median of 25 yrs. ### Watch out for - **62.8 kg per kWp** - Bottom 4% of the PERC 400-450 W segment, against a median of 53.0. Ranked 12,820th in the whole database. - **19.50% module efficiency** - Bottom 5% of the PERC 400-450 W segment, against a median of 20.60%. Ranked 12,663rd in the whole database. - **195.3 watts per square metre** - Bottom 6% of the PERC 400-450 W segment, against a median of 206.2. Ranked 12,634th in the whole database. - **Best for:** Commercial and shaded-installations. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 435 W - **Efficiency:** 19.50 % - **Voltage at Pmax (Vmp):** 40.28 V - **Current at Pmax (Imp):** 10.80 A - **Open-circuit voltage (Voc):** 49.15 V - **Short-circuit current (Isc):** 11.29 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.272 %/degC - **Temperature coefficient of Isc:** 0.044 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 2117 mm - **Width:** 1052 mm - **Thickness:** 35 mm - **Weight:** 27.3 kg - **Area:** 2.23 m2 - **Power density:** 195.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 370 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12663 of 14005 | | Power density | 12634 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 12820 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Bifacial glass-glass construction** - 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. - **Half-cut PERC technology (144 cells)** - 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. - **1500 V DC system compatibility** - 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. - **30-year linear power warranty** - 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 – BNEF Tier-1 manufacturer** - 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. ## Cons - **Discontinued series (since 2022)** - 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. - **19.5% efficiency — well below current 435 Wp peers** - 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. - **PERC — previous-generation cell technology** - 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. ## About this series 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)) ## Notable figures - 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 ## Questions ### What warranty does the JA Solar JAM72D20 435-460/MB/1500V series come with? The JAM72D20 435-460/MB/1500V series carries a 12-year product warranty covering defects in materials and workmanship. The linear power warranty extends to 30 years, guaranteeing at least 85% of nominal power output at end of term. These are standard warranty conditions for a Tier 1 manufacturer like JA Solar. ### What real-world benefit does the bifacial design offer in the JAM72D20 series? The bifacial design allows the module to generate electricity not only from direct sunlight on the front side, but also from light reflected off the ground (albedo effect). On reflective surfaces such as light-colored gravel, concrete, or snow, the bifacial gain can add several to over ten percent of additional energy yield. The glass-glass construction also protects the rear cell surface and extends module service life compared to backsheet designs. ### Why is the JAM72D20 rated for 1500V systems, and what does that mean for installation design? The 1500V system voltage (versus the standard 1000V) allows more modules to be connected in a single string. In practice this means longer strings, fewer DC cables and connectors, and lower balance-of-system (BoS) costs. The advantage is most significant in commercial rooftop and utility-scale PV installations where every reduction in BoS expenditure matters. ### How does the JAM72D20 435-460/MB perform in cold weather and overcast conditions? The temperature coefficient of Pmax is -0.35%/°C, meaning the module loses relatively little output on cold, sunny days — it actually operates more efficiently in winter cold than during peak summer heat. The PERC cell technology and 144 half-cut cell layout also improve response to diffuse light on overcast days and reduce losses under partial shading. ### What are the dimensions and weight of the JAM72D20 460W panel — is it suitable for a pitched roof? The module measures 2117×1052×35 mm and weighs 27.3 kg. Due to its large footprint and the added mass of the glass-glass construction (heavier than comparable backsheet modules), this series is primarily suited to ground-mount and commercial rooftop installations. Mounting on an industrial pitched roof is feasible, but requires a suitably rated racking structure and a roof load assessment. ### Is the JA Solar JAM72D20 435-460/MB/1500V series still available for purchase? The JAM72D20 435-460/MB/1500V series has been discontinued. JA Solar no longer manufactures new modules in this series. Limited stock may still be available through some distributors, but for larger projects it is advisable to consider current JA Solar series that offer higher wattage and updated specifications. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/39500e31c0981dc-218d0c6fb457.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | Cooler, lighter, +4.8 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | Cooler, lighter, +4.8 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | Cooler, lighter, +4.8 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | Cooler, lighter, +4.8 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +50 W, cooler, +4.8 pp | | [JA Solar MYM6144-430](https://comparepv.com/panel/ja-solar-mym6144-430) | 430 W | Hotter, lighter, -5 yr warranty | | [JA Solar MYM6144-435](https://comparepv.com/panel/ja-solar-mym6144-435) | 435 W | Hotter, lighter, -5 yr warranty | | [JA Solar JAM72D20-440/MB/1500V](https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam72d20-440-mb-1500v) | 440 W | +0.3 pp | | [JA Solar MYM6144-440](https://comparepv.com/panel/ja-solar-mym6144-440) | 440 W | Hotter, +0.4 pp, -5 yr warranty | | [JA Solar JAM72S20-445/MR](https://comparepv.com/panel/ja-solar-jam72s20-445-mr-1) | 445 W | Lighter, +0.5 pp, -5 yr warranty | | [JA Solar JAM72D20-445/MB/1500V](https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam72d20-445-mb-1500v) | 445 W | +10 W, +0.5 pp | | [JA Solar MYM6144-445](https://comparepv.com/panel/ja-solar-mym6144-445) | 445 W | Hotter, +0.6 pp, -5 yr warranty | | [JA Solar JAM72S20-450/MR](https://comparepv.com/panel/ja-solar-jam72s20-450-mr-1) | 450 W | Lighter, +0.8 pp, -5 yr warranty | | [JA Solar JAM72D20-450/MB/1500V](https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam72d20-450-mb-1500v) | 450 W | +15 W, +0.7 pp | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +155 W, cooler, +4.3 pp | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +150 W, cooler, +4.1 pp | --- Source: https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam72d20-435-mb-1500v Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.