--- title: "AIKO AIKO-A620-MAE72Dw 620W Solar Panel - Specs & Review | ComparePV" description: "AIKO AIKO-A620-MAE72Dw 620W solar panel. Specs: 24.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/aiko-aiko-a620-mae72dw" updated: 2026-09-11 --- # AIKO AIKO-A620-MAE72Dw Efficiency leader, no clear weak spot 72 panels in the segment Back Contact 600-650 W ## Identity - **Manufacturer:** AIKO - **Model:** AIKO-A620-MAE72Dw - **Series:** Comet 3N+72e (AIKO-A-MAE72Dw) - **Rated power:** 620 W - **Cell technology:** Back Contact ## How it compares Compared against segment Back Contact 600-650 W (72 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 620 W | 635 W | Weak - bottom 21% | | | Module efficiency | 24.00% | 23.70% | Strong - top 22% | 303 | | Power density | 240.0 | 236.9 | Strong - top 22% | 332 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight (kg) | 31.5 kg | 32.3 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 24.00% | 23.70% | Strong - top 22% | 303 | | Power density | 240.0 | 236.9 | Strong - top 22% | 332 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight per kWp | 50.8 | 50.4 | Typical | 4,216 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **24.00% module efficiency** - Top 22% of the Back Contact 600-650 W segment, against a median of 23.70%. - **240.0 watts per square metre** - Top 22% of the Back Contact 600-650 W segment, against a median of 236.9. - **Best for:** Commercial, utility-scale, hot-climate and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 620 W - **Efficiency:** 24.00 % - **Voltage at Pmax (Vmp):** 45.20 V - **Current at Pmax (Imp):** 13.72 A - **Open-circuit voltage (Voc):** 54.57 V - **Short-circuit current (Isc):** 14.46 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** Back Contact - **Cell count:** 144 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.5 kg - **Area:** 2.58 m2 - **Power density:** 240.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 88.8 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.35 % - **Output after 30 years:** 551 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 303 of 14005 | | Power density | 332 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 4216 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Highest efficiency within the segment (24–25%)** - The series achieves an efficiency of 24–25%, while direct competitors in this power class are noticeably behind: BYD HALO 22.79%, Runergy HY-DH156N8 23.1%, Canadian Solar HiHero+ 23.9%. A difference of 1–2 percentage points in efficiency translates to a real increase of 4–9% in energy production from the same roof area or ground space. - **ABC N-type technology with 0BB** - The absence of front-side contacts (All Back Contact, 0BB) eliminates shadowing of the cell by metallic grids, ensuring complete light absorption across the entire front surface. The temperature coefficient is only -0.26%/°C, which, at typical module operating temperatures of 60°C, results in a loss of approximately 8% instead of the ~11% in standard PERC modules (-0.35%/°C). - **30-year linear power guarantee ≥88.85%** - AIKO guarantees ≥88.85% of its rated capacity after 30 years, with a degradation rate of 0.35%/year (after 1 year). For a 1 MWp C&I project, this translates to predictable and modelable revenue throughout the financing period, which directly improves the bankability of the project. - **The dual-glass (Dw) construction, which enhances durability.** - Using double glazing instead of a rear film eliminates the risk of PID degradation, reduces moisture permeability, and extends mechanical resistance to snow and wind loads. This is particularly important in industrial and PV installations, where the operating cycle exceeds 25 years. - **Tier-1, bankable, with over 34+ months of leadership at TaiyangNews** - AIKO has consistently held the top position in the TaiyangNews module efficiency ranking for over 34 months (as of 2025) and is listed in the BNEF Tier-1 Bankable Manufacturers, which directly facilitates project financing by banks and infrastructure funds. ## Cons - **Lack of bifaciality in dual-glass construction** - Despite using two glass modules (dual-glass), the module is monofacial (is\_bifacial: false), meaning it does not generate additional power from reflected light from the ground. The direct competitor – Canadian Solar HiHero+ Bifacial HJT (645 Wp, 23.9%) – offers bifaciality and can increase energy yield by 5–20% in ground-mounted systems with a reflective surface. For ground-mounted farms, the lack of bifaciality represents a real economic loss. - **15-year product warranty – standard, not premium** - The product warranty is 15 years, while some premium manufacturers (e.g., REC Group, certain lines from Canadian Solar) offer 25 years. For projects with a 20+ year financing horizon, a shorter product warranty can be a negotiating point for institutional investors or insurers. ## About this series The AIKO Comet 3N+72e (AIKO-A-MAE72Dw) is a bifacial double-junction module designed for maximum energy yield on limited surfaces and stable performance in both rooftop and ground-mounted installations. Central to its design is the **N-type All Back Contact (ABC) technology**-the absence of front busbars improves light utilization, while its aesthetics and uniform surface go hand-in-hand with higher operational efficiency during daylight hours. In practice, the Comet 3N+72e handles typical installation challenges better: **optimized performance under partial shading** minimizes losses from dirt, leaves, or shadowing from roof elements, and **excellent performance at high temperatures** helps maintain yield during summer months. The application of **dual-glass construction** enhances durability in demanding environments and improves operational safety, which is crucial for commercial projects. This is an excellent choice for C&I installations, solar farms, and projects prioritizing fast ROI, high power density, and predictable energy production-especially in locations where competitive modules suffer more from shading and intense heat. ## Notable figures - Efficiency of 24.0% matches the \*\*Back Contact 600-650W\*\* median - 240.0 W/m² power density - 3.1 W/m² more than \*\*Back Contact 600-650W\*\* median (236.9 W/m²), more power per roof area - Temperature coefficient of -0.26%/°C matches the \*\*Back Contact 600-650W\*\* median - #303 for efficiency, #511 for temperature performance out of 14005 panels ## Questions ### What is the ABC technology used in Aiko Comet 3N+72e panels, and what practical benefits does it offer? ABC (All Back Contact) is a technology in which all the electrodes of the solar cells are located on the back of the module, leaving the front surface free of conductive strips. This allows the AIKO Comet 3N+72e panel to absorb more light and achieve efficiencies of up to approximately 25%. In practice, this means more energy from the same square meter of roof or ground compared to standard PERC or TOPCon panels with similar dimensions. ### What is the warranty on Aiko Comet 3N+72e panels, and what does it cover? AIKO provides a 15-year product warranty, covering material and manufacturing defects, as well as a 30-year linear warranty on power output. In practice, this means that the power degradation is strictly controlled throughout the entire lifespan of the panels, and after 30 years, the panels should maintain more than 87% of their nominal power output. This is a key factor to consider when evaluating the return on investment in a commercial installation. ### How does the AIKO Comet 3N+72e perform in high temperatures during the summer months? The temperature coefficient of power is -0.26%/°C, which is among the better results for premium modules. This means that if the module's temperature increases by 10°C above the test value of 25°C, the panel loses less than 2.6% of its power. In practice, during the summer months when roofs can reach temperatures significantly above 60°C, the Comet 3N+72e maintains a relatively higher energy yield compared to many P-type modules. ### Is AIKO a reliable manufacturer, and is it worth entrusting them with an installation that will last for 25-30 years? AIKO Solar holds Tier 1 certification from independent industry agencies, which signifies compliance with strict financial and quality criteria. The company is one of the few manufacturers producing Back Contact cells in large quantities, and it supplies modules to major commercial projects worldwide. However, when planning a long-term investment, it is advisable to verify the warranty terms directly with an authorized distributor in Poland. ### Which types of installations are best suited for the AIKO Comet 3N+72e series, with a maximum power output of 645 Wp? The Comet 3N+72e series is primarily designed for commercial and industrial (C&I) applications, ground-mounted solar farms, and large rooftop installations, where maximizing power density and predictable energy production are key. With a power output of up to 645 Wp and an efficiency of around 25%, this series enables the generation of more energy from a limited area, while optimized performance under partial shading minimizes losses in complex rooftop or ground conditions. ### What advantages does the dual-glass construction in the AIKO Comet 3N+72e offer, and are the panels more difficult to install? The dual-glass construction, which features a module sealed on both sides with glass instead of a backsheet film, provides better protection against moisture, UV radiation, and PID degradation. This results in more stable performance throughout the product's lifespan, which is particularly important in commercial projects. The panel is slightly heavier than a monosheet panel, so when installing, it's essential to ensure that the supporting structure and roof hooks have sufficient load-bearing capacity. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/comet-3n-plus-72e-aiko-a-mae72dw-620w-645w-20240617-75b5be1a3e84.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +30 W, lighter, +1.2 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +25 W, lighter, +1.0 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +50 W, lighter, +0.8 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +50 W, lighter, +0.8 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +20 W, lighter, +0.8 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +50 W, heavier, +0.8 pp | | [AIKO M530M-144](https://comparepv.com/panel/aiko-m530m-144) | 530 W | -90 W, hotter, -3.5 pp | | [AIKO M535M-144](https://comparepv.com/panel/aiko-m535m-144) | 535 W | -85 W, hotter, -3.3 pp | | [AIKO M540M-144](https://comparepv.com/panel/aiko-m540m-144) | 540 W | -80 W, hotter, -3.1 pp | | [AIKO M545M-144](https://comparepv.com/panel/aiko-m545m-144) | 545 W | -75 W, hotter, -2.9 pp | | [AIKO M550M-144](https://comparepv.com/panel/aiko-m550m-144) | 550 W | -70 W, hotter, -2.7 pp | | [AIKO AIKO-A-600-MAH72Mw](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a-600-mah72mw) | 600 W | Hotter, lighter, -0.8 pp | | [AIKO AIKO-A-605-MAH72Mw](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a-605-mah72mw) | 605 W | Hotter, lighter, -0.6 pp | | [AIKO AIKO-A-610-MAH72Mw](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a-610-mah72mw) | 610 W | Hotter, lighter, -0.4 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +15 W, lighter, +0.6 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +10 W, heavier, +0.4 pp | --- Source: https://comparepv.com/panel/aiko-aiko-a620-mae72dw Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.