Tấm pin quang điệnPhotovoltaic panels · BàiLesson 3/7
Solar Panel Product Comparison
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Solar Knowledge HubSo sánh sản phẩm tấm pinComparing panel products
Ba sản phẩm tiêu biểu trên thị trường Việt Nam, JA 640W, AIKO 655W và AE 730W: phục vụ ba ưu tiên khác nhau, với thông số đối chiếu datasheet.Three representative Vietnamese-market panels, JA 640W, AIKO 655W, AE 730W: serve three different priorities, with datasheet-verified specs.
| Thông sốParameter | JA 640W (JAM72D42-LB)JA 640W (JAM72D42-LB) | AIKO 655W (GRH66Dw)AIKO 655W (GRH66Dw) | AE 730W (CME-132BDS)AE 730W (CME-132BDS) |
|---|---|---|---|
| Công nghệTechnology | TOPCon N-typeTOPCon N-type | ABC back-contact N-typeABC back-contact N-type | TOPCon N-typeTOPCon N-type |
| Hiệu suất moduleModule efficiency | 22.9%22.9% | 24.2%24.2% | khoảng 23.5%about 23.5% |
| VocVoc | 52.87V52.87V | 49.80V49.80V | 49.50V49.50V |
| VmpVmp | 44.29V44.29V | 40.80V40.80V | 41.70V41.70V |
| IscIsc | 15.31A15.31A | 16.72A16.72A | 18.49A18.49A |
| ImpImp | 14.45A14.45A | 16.06A16.06A | 17.51A17.51A |
| Kích thướcDimensions | 2465×1134×30 mm2465×1134×30 mm | 2382×1134×30 mm2382×1134×30 mm | 2383×1302×30 mm2383×1302×30 mm |
| Trọng lượngWeight | 34.6 kg34.6 kg | 32.5 kg32.5 kg | 37 kg37 kg |
| Suy giảm/nămAnnual degradation | khoảng 0.40%about 0.40% | khoảng 0.35%about 0.35% | khoảng 0.40%about 0.40% |
Infographic gốc ghi hiệu suất AE 730W là 24.7%: cao hơn cả AIKO. Đây là sai số nghiêm trọng. Với kích thước 2383×1302mm, 730W chỉ tương ứng khoảng 23.5% (datasheet AE tối đa 23.37–23.53%). Bản gốc cũng ghi sai độ dày AE là 35mm, đúng là 30mm. Kết luận AIKO hiệu suất cao nhất vẫn đúng, nhưng vì AIKO 24.2% > AE 23.5%, không phải so với AE 24.7%.The original infographic listed AE 730W efficiency as 24.7%: higher than AIKO. This is a serious error. Given dimensions 2383×1302mm, 730W corresponds to only about 23.5% (AE datasheet max 23.37–23.53%). The original also incorrectly stated AE thickness as 35mm; the correct value is 30mm. The conclusion that AIKO leads in efficiency is still correct, but because AIKO 24.2% > AE 23.5%, not vs. AE 24.7%.
Tấm dòng cao đặt ra ràng buộc riêng: AE 730W có Imp 17.51A, cao hơn AIKO 16.06A và JA 14.45A. Mỗi bộ MPPT biến tần có giới hạn dòng đầu vào, với tấm dòng cao phải kiểm tra dòng chuỗi không vượt giới hạn đó, nếu không sẽ bị cắt bớt công suất. Lợi ích hai mặt (bifacial) thực tế khoảng 5–15% (hệ số hai mặt ~80%), không phải 10–25% như bản gốc, mức trên 25% gần như không đạt trong dự án thực.High-current panels add a design constraint: AE 730W has Imp 17.51A, higher than AIKO 16.06A and JA 14.45A. Each inverter MPPT has an input current limit, check that string current doesn't exceed it, or power is clipped. Bifacial gain is realistically 5–15% (bifaciality factor ~80%), not 10–25% as the original stated, exceeding 25% is nearly unachievable in real projects.
Đừng để khách chọn theo riêng công suất một tấm: 730W của AE đến từ tấm khổ lớn hơn, không phải hiệu suất cao hơn. Cùng diện tích mái thì hiệu suất quyết định tổng watt lắp được: ở tiêu chí đó AIKO dẫn đầu. Khi khách hỏi vì sao AIKO đắt hơn: hiệu suất cao nhất, thẩm mỹ đẹp nhất, suy giảm thấp nhất.Don't let customers choose by single-panel wattage alone: AE's 730W comes from a bigger panel, not higher efficiency. Same roof area → efficiency determines total installed watts, and AIKO leads there. When asked why AIKO costs more: highest efficiency, best aesthetics, lowest degradation.
When consulting customers, one of the most common questions is which panel to choose among the models currently on offer. This document compares three representative products on the Vietnamese market (JA 640W, AIKO 655W, and AE 730W) with specifications cross-checked against official datasheets, then draws conclusions about which product suits which application.
For: sales staff comparing products for customers, technicians selecting panels for system design, newcomers who want to see how technology translates into real products.
Quick Summary
The three panels serve three different priorities. AIKO 655W uses back-contact ABC technology, delivering the highest efficiency and a clean front surface, making it ideal for townhouses and villas where the roof is visible. JA 640W uses TOPCon, balancing efficiency, stability, and price, suitable for residential, SME, and commercial rooftop segments. AE 730W is also TOPCon but in a large format with higher power per panel and higher current, optimised for large-scale systems.
In terms of efficiency, the correct ranking is: AIKO at 24.2% highest, then AE at approximately 23.5%, then JA at 22.9%. This corrects an error in the original source, which incorrectly attributed 24.7% to AE.
High-current panels such as the AE 730W, with an operating current of up to 17.5 A, require a check of the MPPT current limit on the inverter when designing strings.
The Three Products and Their Technologies
JA Solar 640W, model JAM72D42-LB, is an N-type TOPCon double-glass bifacial panel. TOPCon adds a thin oxide layer and polycrystalline silicon on the rear surface to reduce electron recombination, resulting in high efficiency, low degradation, and good temperature performance.
AIKO 655W, model AIKO-A-GRH66Dw, is an N-type ABC (All Back Contact) double-glass bifacial panel. All electrodes are located on the rear, so the front surface has no busbars, delivering the highest efficiency and superior aesthetics.
AE Solar 730W, model AE CME-132BDS, is a large-format N-type TOPCon double-glass bifacial panel. Its strengths are high power per panel and high current output, optimised for large-scale systems.
Datasheet-Verified Specifications
| Parameter | JA 640W | AIKO 655W | AE 730W |
|---|---|---|---|
| Model | JAM72D42-LB | AIKO-A-GRH66Dw | AE CME-132BDS |
| Technology | TOPCon | ABC back-contact | TOPCon |
| Pmax | 640 W | 655 W | 730 W |
| Voc | 52.87 V | 49.80 V | 49.50 V |
| Vmp | 44.29 V | 40.80 V | 41.70 V |
| Isc | 15.31 A | 16.72 A | 18.49 A |
| Imp | 14.45 A | 16.06 A | 17.51 A |
| Efficiency | 22.9% | 24.2% | approx. 23.5% |
| Dimensions | 2465×1134×30 mm | 2382×1134×30 mm | 2383×1302×30 mm |
| Weight | 34.6 kg | 32.5 kg | 37 kg |
| Annual degradation | approx. 0.40% | approx. 0.35% | approx. 0.40% |
The original infographic lists the AE 730W efficiency as 24.7%, higher even than AIKO. This is a serious error. Given the panel dimensions of 2383×1302 mm and a rated power of 730 W, the efficiency works out to approximately 23.5%, and AE datasheets confirm a maximum of approximately 23.37% to 23.53%. The conclusion that AIKO has the highest efficiency still holds: AIKO’s 24.2% exceeds AE’s 23.5%, not because AE reaches 24.7%. The original also incorrectly states AE’s thickness as 35 mm; the datasheet specifies 30 mm.
Double Glass and Real-World Benefits
All three panels are double-glass bifacial modules that generate power from both surfaces. The rear side captures reflected light from the ground, adding to overall yield. It is important to be realistic about the magnitude of this benefit. The bifaciality factor of these panels is approximately 80%, and real-world bifacial gain typically falls in the range of 5% to 15%, depending on ground reflectance (albedo), mounting height, and row spacing. The original source claims gains of 10% to 25% for AIKO and AE, which is an overstatement: gains above 25% are virtually unachievable in real projects.
High-current panels impose specific design constraints. The AE 730W has an operating current (Imp) of 17.51 A, higher than AIKO’s 16.06 A and JA’s 14.45 A. Each MPPT input on an inverter has a maximum input current rating, so when using high-current panels, the string current must be verified not to exceed that limit, otherwise the inverter will derate output. This is why high-current panels, though powerful, are more selective about inverter compatibility.
Choosing the Right Panel
Choose based on the application, not the largest number on the label. AIKO 655W suits customers who prioritise maximum efficiency on a limited roof area and want attractive aesthetics on a visible roof, such as townhouses and villas, at a higher price point. JA 640W suits applications that need a balance of stable efficiency and competitive price, with easy system integration, fitting most residential and commercial rooftop projects. AE 730W suits applications requiring high power per panel for large-scale systems such as factories and solar farms, provided the inverter can handle the high current.
Do not let customers choose purely on single-panel wattage, because the AE’s 730 W comes from a larger panel format, not from higher efficiency. The fair comparison is: for the same roof area, efficiency determines total installable watts, and on that metric, AIKO leads. When a customer asks why AIKO is more expensive, the three selling points are: highest efficiency, best aesthetics, and lowest annual degradation.