--- title: "JA Solar JAM72D30-545/MB Solar Panel: Specs & Prices | ComparePV" description: "JA Solar JAM72D30-545/MB solar panel: 1 shop offer from 199 C$. Specs: 21.10% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/ja-solar-technology-co-ltd-jam72d30-545-mb" image: "https://comparepv.com/og/panel/ja-solar-technology-co-ltd-jam72d30-545-mb.png" updated: 2026-10-26 --- # JA Solar JAM72D30-545/MB Strong in heat, no clear weak spot 709 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAM72D30-545/MB - **Series:** JAM72D30 MB - **Rated power:** 545 W - **Cell technology:** PERC - **Bifacial:** yes ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWp | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [www.modernoutpost.com](https://comparepv.com/go/199004) | Canada | 199 C$ net | 365.14 C$/kWp | In stock | Last read 26 Oct 06:43 | ## How it compares Compared against segment PERC 500-550 W (709 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 545 W | 535 W | Strong - top 12% | | | Module efficiency | 21.10% | 20.90% | Strong - top 21% | 9,365 | | Power density | 211.0 | 209.0 | Strong - top 18% | 9,380 | | Temperature coefficient | -0.290 | -0.350 | Strong - top 1% | 2,220 | | Weight (kg) | 31.8 kg | 28.3 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.10% | 20.90% | Strong - top 21% | 9,365 | | Power density | 211.0 | 209.0 | Strong - top 18% | 9,380 | | Temperature coefficient | -0.290 | -0.350 | Strong - top 1% | 2,220 | | Weight per kWp | 58.3 | 53.0 | Typical | 11,795 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.290 %/°C temperature coefficient** - Top 1% of the PERC 500-550 W segment, against a median of -0.350. Ranked 2,220th in the whole database. - **211.0 watts per square metre** - Top 18% of the PERC 500-550 W segment, against a median of 209.0. - **21.10% module efficiency** - Top 21% of the PERC 500-550 W segment, against a median of 20.90%. - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 545 W - **Efficiency:** 21.10 % - **Voltage at Pmax (Vmp):** 41.80 V - **Current at Pmax (Imp):** 13.04 A - **Open-circuit voltage (Voc):** 49.75 V - **Short-circuit current (Isc):** 13.93 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.8 kg - **Area:** 2.58 m2 - **Power density:** 211.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 476 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9365 of 14129 | | Power density | 9380 of 14129 | | Temperature coefficient | 2220 of 14129 | | Weight | 11795 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Bifacial double glass with 10-25% energy boost** - The bifacial design (dual-side PERC cells) delivers a 10-25% annual yield gain over monofacial modules of the same STC rating, depending on ground albedo (0.2-0.4 typical). The double glass encapsulation eliminates the backsheet, significantly improving PID resistance, moisture ingress protection, and UV stability - resulting in a flatter degradation curve over the full 30-year service life. - **Half-cut cells + 11BB multi-busbar** - Splitting cells in half reduces series resistance and thermal losses, while the 11-busbar (11BB) layout shortens current paths and improves resistance to microcracks. In practice, the series outperforms standard 9BB half-cut configurations under partial shading and shows lower mismatch losses within strings. - **30-year linear power warranty / 0.45%/yr degradation** - The declared linear degradation of 0.45%/yr is among the lowest in the P-type PERC class (industry average for PERC is 0.55-0.60%/yr per manufacturer data). After 30 years, the module retains >86.5% of nameplate power - on par with all three peer comparables in this segment (ET Solar Elite PLUS, Boviet VEGA Series, BYD AURO, all rated at 30 years). - **JA Solar BNEF Tier-1 - bankable since 2012** - JA Solar has maintained continuous BNEF Tier-1 bankable status since 2012, demonstrating consistent eligibility for bank-financed utility-scale PV projects. For commercial and utility installations this translates to lower lender risk premiums, easier project finance approval, and more favorable insurance underwriting. ## Cons - **Series discontinued (EOL 2024)** - Per manufacturer data, the JAM72D30 MB series reached end-of-life in 2024. For new projects this means limited availability of current-production modules, increased risk of non-identical replacements under warranty claims, and potential difficulty expanding existing installations with matched modules in the future. - **P-type PERC susceptible to LID - up to 2.5% initial loss** - PVEL's 2025 dataset shows that 78% of P-type PERC BOMs degrade 1.5-2.5% under the LID (light-induced degradation, boron-oxygen defect) test protocol. Competing N-type TOPCon modules introduced since 2024 are LID-free and carry warranted degradation of ~0.40%/yr versus this series' 0.45%/yr - a meaningful LCOE difference over 30 years. - **12-year product warranty below current benchmark** - The product (materials & workmanship) warranty covers only 12 years, while most modules entering the market in 2023-2025 - including JA Solar's own N-type DeepBlue 4.0 generation - offer 15-25-year product coverage. For installations with a payback period exceeding 12 years, this creates a real gap in manufacturer-backed service protection. ## About this series JA Solar JAM72D30 MB Bifacial Modules are designed for maximum real-world performance - not just on paper. Thanks to the **double glass** construction, the panels better withstand moisture, temperature fluctuations, and mechanical stress, reducing the risk of microcracks and power performance degradation in the following years. The application of **monocrystalline PERC cells** in a **half-cut** configuration improves performance under partial shading and reduces losses, particularly benefiting installations on rooftops with obstacles or east-west layouts. Additionally, the **multi-busbar** technology increases resistance to degradation and stabilizes parameters over the long term. The JAM72D30 MB is an excellent choice for PV farms and larger commercial installations, where predictable power output and better use of reflected ground light are key. It stands out from many competitive modules due to its emphasis on structural durability and practical tolerance for challenging operating conditions. ## Notable figures - Efficiency of 21.1% matches the \*\*PERC 500-550W\*\* median - At 211.0 W/m² power density, roof space requirements are typical for \*\*PERC 500-550W\*\* panels - At -0.29%/°C (vs median -0.35%/°C), loses ~2% less power in hot conditions - At 31.8 kg, this panel is 3.5 kg heavier than the \*\*PERC 500-550W\*\* median (28.3 kg) - more demanding for installation crews - 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces ## Questions ### Is the JA Solar JAM72D30 MB series still available for purchase? The JAM72D30 MB series has been discontinued and is no longer offered as a new product by JA Solar. It may still be found through distributors as residual stock or on the secondary market. If you are planning a large-scale project and require supply certainty, consider JA Solar's current lineup featuring comparable monocrystalline PERC or TOPCon technology. ### What warranty does the JA Solar JAM72D30 MB come with? JA Solar provides a 12-year product warranty and a 30-year linear power output warranty for the JAM72D30 MB modules. The power warranty guarantees at least 87.4% of nominal output after 30 years, with a linear annual degradation schedule. These are standard Tier 1 conditions and are considered reliable for long-term financial modeling of solar projects. ### What does bifacial mean for the JAM72D30 MB and does it actually improve energy yield? Bifacial means the module generates electricity from both the front and rear surfaces by capturing light reflected off the ground or mounting surface. The JAM72D30 MB has a bifaciality factor of approximately 70%, which can increase annual energy yield by several to over ten percent depending on ground albedo and tilt angle. Ground-mounted systems over light-colored surfaces or elevated roof installations benefit the most. ### Are JA Solar JAM72D30 MB panels suitable for rooftops with partial shading? Yes. The half-cut cell design splits each cell into two smaller halves wired in parallel, so shading on one section of the module does not shut down the entire string. Combined with the multi-busbar layout, shading losses are noticeably lower than in conventional 72-cell full-cell modules. The JAM72D30 MB is a solid choice for rooftops with chimneys, dormers, or east-west split orientations. ### Why does the JAM72D30 MB use double glass instead of a backsheet, and does it matter for durability? The double glass construction replaces the polymer backsheet with a second layer of tempered glass, which does not absorb moisture or degrade under UV exposure the way polymer films can. This significantly reduces the risk of micro-cracks, delamination, and PID over time. It is especially advantageous in humid climates or installations subject to large temperature swings and mechanical loads. ### What inverter should be used with a utility-scale PV plant built on JAM72D30 MB 555W modules? The JAM72D30 MB operates at up to 1500 V DC system voltage, so a 1500 V-rated inverter is required. With 555 Wp per module and typical string lengths of 20-28 panels, the inverter MPPT input range should cover approximately 600-1400 V. Compatible solutions for utility-scale and large commercial plants include 1500 V string and central inverters from SMA, Huawei, Sungrow, and Fronius. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ca887fb80c47-56ad2ae30ac9.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.9 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | -50 W, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.6 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | -40 W, lighter, +3.6 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.4 pp | | [JA Solar JAM72D30-525/MB/1500V](https://comparepv.com/panel/ja-solar-jam72d30-525-mb-1500v) | 525 W | -20 W, hotter, -0.8 pp | | [JA Solar JAM72S30-530/MR](https://comparepv.com/panel/ja-solar-jam72s30-530-mr) | 530 W | Hotter, lighter, -5 yr warranty | | [JA Solar JAM72S30-535/MR](https://comparepv.com/panel/ja-solar-jam72s30-535-mr) | 535 W | Hotter, lighter, -5 yr warranty | | [JA Solar JAM72S30-540/MR](https://comparepv.com/panel/ja-solar-jam72s30-540-mr) | 540 W | Hotter, lighter, -5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +105 W, lighter, +4.1 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +100 W, lighter, +3.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +95 W, lighter, +3.7 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +90 W, lighter, +3.5 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +85 W, cooler, +3.3 pp | --- Source: https://comparepv.com/panel/ja-solar-technology-co-ltd-jam72d30-545-mb 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.