--- title: "JA Solar JAM66D30-490/MB/1500V Solar Panel: Specs & Datasheet | ComparePV" description: "JA Solar JAM66D30-490/MB/1500V solar panel. Specs: 20.60% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam66d30-490-mb-1500v" image: "https://comparepv.com/og/panel/shanghai-ja-solar-technology-co-ltd-jam66d30-490-mb-1500v.png" updated: 2026-09-11 --- # JA Solar JAM66D30-490/MB/1500V Warranty pick, heavy for its output 452 panels in the segment PERC 450-500 W ## Identity - **Manufacturer:** JA Solar - **Model:** JAM66D30-490/MB/1500V - **Series:** DEEP BLUE 3.0 - **Rated power:** 490 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 450-500 W (452 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 490 W | 460 W | Strong - top 15% | | | Module efficiency | 20.60% | 20.82% | Weak - bottom 24% | 11,172 | | Power density | 205.8 | 208.5 | Weak - bottom 21% | 11,227 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight (kg) | 29.0 kg | 24.5 kg | Weak - bottom 12% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 20% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.60% | 20.82% | Weak - bottom 24% | 11,172 | | Power density | 205.8 | 208.5 | Weak - bottom 21% | 11,227 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight per kWp | 59.2 | 53.1 | Weak - bottom 12% | 12,132 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 20% | 21 | ### Strengths - **30 year performance warranty** - Top 20% of the PERC 450-500 W segment, against a median of 25 yrs. ### Watch out for - **59.2 kg per kWp** - Bottom 12% of the PERC 450-500 W segment, against a median of 53.1. - **205.8 watts per square metre** - Bottom 21% of the PERC 450-500 W segment, against a median of 208.5. - **20.60% module efficiency** - Bottom 24% of the PERC 450-500 W segment, against a median of 20.82%. - **Best for:** Residential, utility-scale and shaded-installations. - **Not ideal for:** Weight-limited structures, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 490 W - **Efficiency:** 20.60 % - **Voltage at Pmax (Vmp):** 37.99 V - **Current at Pmax (Imp):** 12.90 A - **Open-circuit voltage (Voc):** 45.33 V - **Short-circuit current (Isc):** 13.79 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.275 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 2100 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 29.0 kg - **Area:** 2.38 m2 - **Power density:** 205.8 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:** 416 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11172 of 14129 | | Power density | 11227 of 14129 | | Temperature coefficient | 10489 of 14129 | | Weight | 12132 of 14129 | | Warranty | 21 of 14129 | ## Pros - **BNEF Tier-1 manufacturer, 100 GW capacity** - JA Solar appears on the BNEF Q1 2026 bankable Tier-1 list with a stated production capacity of 100 GW/year, placing it alongside Jinko and LONGi at the top of the global ranking. This guarantees supply continuity, straightforward non-recourse project financing, and reliable service availability across the full module lifecycle. - **Gallium doping eliminates LID** - Ga-doped cells reduce first-year light-induced degradation (LID) to ~2% versus ~3% for standard boron-doped PERC, and limit the annual degradation rate to ~0.5%/year versus ~0.7%/year thereafter. Over a 25-year lifetime this translates to measurably higher cumulative energy yield and a lower LCOE. - **Half-cut MBB 182mm - low resistive losses & mechanical strength** - The 144-cell half-cut layout combined with multi-busbar (MBB) design reduces resistive losses, improves partial-shading tolerance, and limits microcrack propagation. The module is rated for snow loads up to 5,400 Pa and wind loads up to 2,400 Pa, meeting the structural requirements of Central and Northern European climate zones. - **Up to 21.5% efficiency - peer-group leader** - The top efficiency of 21.5% exceeds ET Solar Elite PLUS (21.4%) and Boviet VEGA (21.3%), and is essentially on par with BYD AURO (21.48%). The series thus competes at the very top of its M10 PERC peer group without charging a premium for N-type technology. - **Linear power warranty up to 30 years** - Select variants carry a 30-year linear power warranty, while ET Solar Elite PLUS and Boviet VEGA cap out at the standard 25 years. The extended warranty horizon directly lowers LCOE in utility-scale financial models and facilitates bankability for long-tenor project debt. ## Cons - **PERC technology - previous generation** - Launched in 2020, the series is based on P-type PERC, whereas the premium market has largely moved to N-type TOPCon (efficiency 22-23.5%, degradation ~0.4%/year, temperature coefficient -0.32%/°C) and HJT (-0.26%/°C, ~0.25-0.30%/year degradation). For new installations prioritizing maximum long-term yield - especially in hot climates - current N-type alternatives offer measurably better performance parameters. - **Monofacial only - no bifacial yield potential** - Direct peer BYD AURO/MLBK-36 (up to 555 Wp, 21.48% efficiency) offers a bifacial dual-glass construction enabling 5-20% additional backside yield depending on ground albedo. As a monofacial module, DEEP BLUE 3.0 cannot capture this potential - a meaningful limitation for ground-mounted projects with high-reflectivity surfaces. ## About this series The JA Solar DEEP BLUE 3.0 photovoltaic panel series is an advanced solution based on M10 silicon wafers that sets the standard for LCOE energy cost optimization. Thanks to the use of **gallium-doped cells**, this technology effectively eliminates the problem of light-induced degradation (LID), which translates into long-term yield stability and higher module longevity. This series utilizes **half-cut cell architecture** and multi-busbar (MBB) design, which significantly reduces resistance losses and improves resistance to micro-cracks and shading. DEEP BLUE 3.0 solves the dilemma between high power and ease of installation - the 182 mm format provides the ideal balance between efficiency and logistics. These modules are dedicated to both prosumer installations and large-scale solar farms, where maximizing the use of available space is key. What sets them apart from the competition is a precise **combination of high efficiency and excellent mechanical parameters**, guaranteeing operational safety in harsh weather conditions. This is the choice for investors relying on proven **next-generation PERC technology**, ensuring a fast return on investment thanks to high energy generation even in low sunlight. ## Notable figures - At 20.6% efficiency, this panel is on par with typical \*\*PERC 450-500W\*\* modules - At 205.8 W/m² power density, roof space requirements are typical for \*\*PERC 450-500W\*\* panels - Temperature coefficient of -0.35%/°C matches the \*\*PERC 450-500W\*\* median - At 29.0 kg, this panel is 4.5 kg heavier than the \*\*PERC 450-500W\*\* median (24.5 kg) - more demanding for installation crews - Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface ## Questions ### What is the maximum power output of the JA Solar DEEP BLUE 3.0 and how does it differ from older JA Solar models? The top variant of the DEEP BLUE 3.0 series reaches 555 Wp. Compared to older JA Solar modules, the key improvements are the M10 wafer size (182 mm), half-cut cell architecture combined with MBB (multi-busbar) technology, and gallium-doped cells. These upgrades push module efficiency to approximately 21.5% and significantly reduce losses from light-induced degradation (LID). ### What is the warranty on JA Solar DEEP BLUE 3.0 panels? JA Solar provides a 12-year product warranty covering material and manufacturing defects, along with a 30-year linear power output warranty on the DEEP BLUE 3.0 series. This means the Tier 1 manufacturer stands behind the module's performance for three decades of operation, placing it among the most competitive power warranties available for PERC technology in the European market. ### Do DEEP BLUE 3.0 panels perform well on cloudy days and in low-irradiance conditions? Yes, the DEEP BLUE 3.0 series is engineered to maintain solid energy yield under diffuse light. Half-cut cell architecture and gallium-doped cells minimize internal losses, while a low temperature coefficient of power (-0.35%/°C) means the modules actually deliver higher relative performance in cool, overcast conditions typical of Central European climates. ### Are JA Solar DEEP BLUE 3.0 panels resistant to snow loads and strong winds? Yes, DEEP BLUE 3.0 modules are certified to withstand a front snow load of up to 5,400 Pa and a wind load of up to 2,400 Pa, handling heavy wet snow typical of Polish winters with ease. The IP68-rated junction box provides additional moisture and corrosion protection under harsh weather conditions. ### Is the DEEP BLUE 3.0 series suitable for a residential rooftop installation on a pitched roof? The DEEP BLUE 3.0 series is available in multiple form factors, including smaller 54-cell variants weighing around 19.5 kg that are purpose-built for residential pitched-roof installations. The M10 cell format maximizes energy yield per square meter of roof space, and the panels are compatible with standard racking systems and MPPT inverters widely available in the European market. ### What does it mean that DEEP BLUE 3.0 cells are gallium-doped, and why does it matter for long-term system performance? Conventional boron-doped PERC cells suffer from light-induced degradation (LID) during the first months of operation, which can permanently reduce output by 2-3%. Gallium-doped cells used in the DEEP BLUE 3.0 series virtually eliminate this effect, delivering more stable long-term energy yield across the full 30-year warranted lifetime and improving the overall return on investment. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/20210706053403574-9b84f031ec32.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +4.4 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +4.2 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +4.1 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.9 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.9 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +3.9 pp | | [JA Solar JAM66S30-480/MR](https://comparepv.com/panel/ja-solar-jam66s30-480-mr) | 480 W | Lighter, -0.4 pp, -5 yr warranty | | [JA Solar JAM66D30-480/MB/1500V](https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam66d30-480-mb-1500v) | 480 W | -10 W, -0.4 pp | | [JA Solar JAM66S30-485/MR](https://comparepv.com/panel/ja-solar-jam66s30-485-mr) | 485 W | Lighter, -0.2 pp, -5 yr warranty | | [JA Solar JAM66D30-485/MB/1500V](https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam66d30-485-mb-1500v) | 485 W | -0.2 pp | | [JA Solar JAM66S30-490/MR](https://comparepv.com/panel/ja-solar-jam66s30-490-mr) | 490 W | Lighter, -5 yr warranty | | [JA Solar JAM66S30-495/MR](https://comparepv.com/panel/ja-solar-jam66s30-495-mr) | 495 W | Lighter, +0.3 pp, -5 yr warranty | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +100 W, cooler, +3.2 pp | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +95 W, cooler, +3.0 pp | | [Bisol BGO 580](https://comparepv.com/panel/bisol-bgo-580) | 580 W | +90 W, cooler, +2.9 pp | --- Source: https://comparepv.com/panel/shanghai-ja-solar-technology-co-ltd-jam66d30-490-mb-1500v 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.