--- title: "JA Solar JAM72D40-575/GB Solar Panel: Specs & Datasheet | ComparePV" description: "JA Solar JAM72D40-575/GB solar panel. Specs: 22.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ja-solar-jam72d40-575-gb" image: "https://comparepv.com/og/panel/ja-solar-jam72d40-575-gb.png" updated: 2026-09-11 --- # JA Solar JAM72D40-575/GB Middle of its segment, weak in heat 256 panels in the segment N-type 550-600 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAM72D40-575/GB - **Series:** DEEP BLUE 4.0 - **Rated power:** 575 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 550-600 W (256 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 575 W | 580 W | Typical | | | Module efficiency | 22.30% | 22.45% | Typical | 5,161 | | Power density | 222.6 | 224.5 | Typical | 5,612 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 17% | 6,152 | | Weight (kg) | 31.8 kg | 30.2 kg | Weak - bottom 19% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.30% | 22.45% | Typical | 5,161 | | Power density | 222.6 | 224.5 | Typical | 5,612 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 17% | 6,152 | | Weight per kWp | 55.3 | 52.5 | Weak - bottom 19% | 9,846 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 17% of the N-type 550-600 W segment, against a median of -0.290. - **55.3 kg per kWp** - Bottom 19% of the N-type 550-600 W segment, against a median of 52.5. - **Best for:** Residential, commercial and utility-scale. - **Not ideal for:** Hot climates and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 575 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 42.85 V - **Current at Pmax (Imp):** 13.42 A - **Open-circuit voltage (Voc):** 51.15 V - **Short-circuit current (Isc):** 14.30 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/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:** N-type - **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:** 222.6 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:** 503 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5161 of 14129 | | Power density | 5612 of 14129 | | Temperature coefficient | 6152 of 14129 | | Weight | 9846 of 14129 | | Warranty | 21 of 14129 | ## Pros - **N-type Bycium+ (TOPCon) cells** - Bycium+ n-type cells achieve up to 25.3% cell efficiency in mass production and deliver ~3.9% higher annual energy yield compared to standard p-type PERC modules. Minimal light-induced degradation (LID) and a low temperature coefficient of -0.30%/°C translate into measurably higher output on hot, high-irradiance days. - **Module efficiency 21.5-22.5% - segment leader** - The 21.5-22.5% module efficiency range places this series at the very top of its peer group: Emmvee Titanium Duo/Clear tops out at 22.45% and ZNShine ZXM7-UHLD144 at 22.44%. DEEP BLUE 4.0 matches its closest competitors with no meaningful efficiency gap, while benefiting from JA Solar's global supply chain scale. - **30-year linear power warranty** - JA Solar guarantees first-year degradation ≤1% and annual degradation ≤0.40%/year thereafter, with a minimum of 87.4% rated power after 30 years. This long-term performance commitment is a key driver of LCOE reduction for both residential prosumers and utility-scale projects. - **Bifacial design - albedo energy gain** - The bifacial module construction harvests reflected irradiance from the rear surface (roofing material, gravel, snow). With typical albedo values of 10-25%, bifacial gain ranges from 5% to 15% over equivalent monofacial modules in the same power class, at no additional BoS cost. - **BNEF Tier-1 - consistent bankability** - JA Solar (founded 2005) has maintained a continuous presence on BloombergNEF's quarterly Tier-1 list and ranks among the five largest PV module manufacturers globally (annual nameplate capacity >30 GW). Tier-1 bankable status reduces non-recourse financing risk and ensures long-term service and spare-parts availability. ## Cons - **Only 12-year product warranty** - JA Solar's 12-year workmanship warranty is the shortest among leading Tier-1 manufacturers: REC Solar offers 20 years, Qcells and Panasonic both offer 25 years, and the market median for the premium segment is approximately 25 years. For commercial projects with extended financing horizons, this gap may increase perceived counterparty risk during due diligence. ## About this series JA Solar DEEP BLUE 4.0 series photovoltaic panels introduce a new level of quality thanks to the use of advanced **n-type cells in Bycium+ technology**. This innovation directly translates into significantly higher efficiency and excellent operational stability in difficult lighting conditions. This series was designed to maximize investor profits through a **reduced LCOE**, making it one of the most cost-effective solutions on the market. A key advantage over older technologies is **minimal light-induced degradation**, thanks to which the modules maintain high performance over decades of use. This solves the problem of long-term yield loss, offering full certainty of return on investment. Thanks to a low temperature coefficient, these panels generate more energy during hot days compared to standard p-type modules. It is an ideal choice for both large-scale industrial farms and modern home installations, where every watt of power obtained from limited roof space counts. **High mechanical resistance** and a sealed construction make Deep Blue 4.0 stand out from the competition with exceptional durability and reliability in the variable Polish climate. This is a solution for those seeking the technological optimum between price and innovation. ## Notable figures - Efficiency of 22.3% matches the \*\*N-type 550-600W\*\* median - At 222.6 W/m² power density, roof space requirements are typical for \*\*N-type 550-600W\*\* panels - At -0.30%/°C, hot weather performance is typical for \*\*N-type 550-600W\*\* panels - Weight of 31.8 kg is 1.5 kg above \*\*N-type 550-600W\*\* median (30.3 kg) - verify structural support - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What is the warranty on JA Solar DEEP BLUE 4.0 panels? JA Solar provides a 12-year product workmanship warranty and a 30-year linear power warranty for the DEEP BLUE 4.0 series. After 30 years of operation, modules are guaranteed to retain at least 87.4% of their rated output. First-year degradation is approximately 1%, followed by only 0.40% annually - ensuring predictable, stable energy yields throughout the entire investment lifecycle. ### How do JA Solar DEEP BLUE 4.0 panels differ from older p-type PERC modules? The key difference is the use of n-type Bycium+ cells instead of conventional p-type PERC cells. N-type cells offer minimal light-induced degradation (LID), module efficiency of around 22.5%, and a lower temperature coefficient of -0.30%/°C compared to -0.35 to -0.40%/°C typical of PERC. In practice, this means more kilowatt-hours generated annually, especially during overcast days common in central European climates. ### Will the bifacial JA Solar DEEP BLUE 4.0 perform well on a sloped roof with dark corrugated metal? DEEP BLUE 4.0 panels are well-suited for sloped roofs, though the bifacial gain - extra output from the rear side - is greatest on ground-mount systems or installations over highly reflective surfaces. On a dark metal roof, rear-side contribution will be minimal. Structurally, the modules handle snow loads up to 5400 Pa and wind loads up to 2400 Pa, making them reliable on all standard residential rooftops. ### How does the low temperature coefficient of JA Solar DEEP BLUE 4.0 affect energy output during hot summer days? The power temperature coefficient is -0.30%/°C, meaning the panel loses only 0.30% of rated power per degree above 25°C. On hot summer days when module temperature reaches 60-70°C, this advantage over standard p-type modules with a -0.37%/°C coefficient translates to several percent of additional seasonal energy. This is especially relevant when optimizing LCOE in commercial and utility-scale installations. ### How much does a JA Solar DEEP BLUE 4.0 580W panel weigh and can a standard pitched roof handle it? The JAM72D40-580 model weighs approximately 31.8 kg with dimensions of 2278 x 1134 x 30 mm. The glass-glass bifacial construction is slightly heavier than single-glass backsheet modules of comparable wattage. A structural assessment by the installer is always recommended, but most standard residential roof structures handle this load without issue. The IP68-rated junction box with MC4-EVO2A connectors ensures weatherproofing in variable climates. ### Is JA Solar's Bycium+ in DEEP BLUE 4.0 the same as TOPCon technology, and is it worth the premium over PERC? Bycium+ is JA Solar's proprietary trade name for their n-type TOPCon cell implementation. Compared to PERC, it delivers higher conversion efficiency, lower LID, and better performance under diffuse light conditions. The investment in n-type modules pays off through higher annual energy yields and slower degradation backed by a 30-year power warranty, resulting in a lower LCOE over the full system lifetime. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/20221124101212393-b0ba0e0fd0e5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +2.5 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +2.3 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, 16 kg lighter, +2.1 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +2.1 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | Cooler, lighter, +2.1 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | Cooler, lighter, +2.0 pp | | [AIKO AIKO-A625-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a625-mah72dw) | 625 W | +50 W, cooler, +1.9 pp | | [JA Solar JAM72D30-525/MB/1500V](https://comparepv.com/panel/ja-solar-jam72d30-525-mb-1500v) | 525 W | -50 W, hotter, -2.0 pp | | [JA Solar JAM72S30-530/MR](https://comparepv.com/panel/ja-solar-jam72s30-530-mr) | 530 W | Hotter, -1.8 pp, -5 yr warranty | | [JA Solar JAM72S30-535/MR](https://comparepv.com/panel/ja-solar-jam72s30-535-mr) | 535 W | Hotter, -1.6 pp, -5 yr warranty | | [JA Solar JAM72S30-540/MR](https://comparepv.com/panel/ja-solar-jam72s30-540-mr) | 540 W | Hotter, -1.4 pp, -5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +75 W, lighter, +2.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +70 W, lighter, +2.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +65 W, lighter, +2.5 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +60 W, lighter, +2.3 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +55 W, cooler, +2.1 pp | --- Source: https://comparepv.com/panel/ja-solar-jam72d40-575-gb Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.