It gathers light on the front and on the back, so it extracts extra energy on open surfaces. 660 W, 24.4% efficiency, double glass, for ground or carport mounting.
A photovoltaic panel converts sunlight into electricity. This is a bifacial model: it has glass on the back too, so it also uses the light reflected by the ground, not only the light falling directly on the front. The cells are of the back-contact type, that is all the current-collecting wires are hidden behind the cell, not on the front, so the surface exposed to the sun remains whole and the panel looks uniform. The glass-glass construction makes it more durable over time than a classic panel with a backsheet.
Each module gives 660 W, so ten modules mean 6.6 kWp installed. At 2382 x 1134 mm and about 33 kg each it is a large format, designed for the ground, a carport or a hall: on a small residential roof it is hard to handle and requires two people for installation. The gain from the back appears only when space remains under the panel and there is a light-coloured surface reflecting the light (good albedo) — light gravel, white membrane, snow; above a dark surface the bonus is, as a guide, small. The very low temperature coefficients mean that in summer, when the panel heats up, it loses less power than an ordinary module, and the warranty is 15 years for the product and 30 years for performance, with degradation below 1% in the first year and below 0.35% per year afterwards.
Module with 144 N-type ABC cells in a 6 x 24 configuration, glass-glass laminate 2.0 + 2.0 mm tempered, 30 mm anodised aluminium frame, bifaciality factor 65 +/- 5%, mass approx. 33 kg. Temperature coefficients: Pmax -0.26 %/°C, Voc -0.22 %/°C, Isc +0.05 %/°C; maximum system voltage 1500 V DC; mechanical load 5400 Pa front / 2400 Pa back; MC4 EVO2 / MC4 EVOA connectors. The absence of the metal grid on the front of the cell reduces the risk of microcracks and hot spots and gives a better tolerance to partial shading. Design note: the individual electrical values (Voc/Isc/Vmp/Imp) have not been confirmed on the individual datasheet of this SKU, the data being those of the Stellar 1N+72 Dual-Glass series — string sizing is done from the batch datasheet.
Suitable for ground, carport or industrial hall installations, where there is space under the modules and a light-coloured surface reflecting the light; less suitable for small residential roofs, because of the 2.38 m size and the 33 kg.
| Rated power (STC) | 660 W |
|---|---|
| Module efficiency | 24,4% |
| Cell technology | N-type ABC (All Back Contact), 144 celule (6 x 24) |
| Dimensions | 2382 x 1134 x 30 mm |
| Weight | cca. 33 kg |
| Construction | Sticla dubla calita 2,0 + 2,0 mm |
| Bifaciality factor | 65 +/- 5% |
| Temperature coefficients | Pmax -0,26 %/grad C, Voc -0,22 %/grad C, Isc +0,05 %/grad C |
| Maximum system voltage | 1500 V DC |
| Mechanical load | 5400 Pa fata / 2400 Pa spate |
| Connector | MC4 EVO2 / MC4 EVOA |
| Degradation | sub 1% primul an, sub 0,35%/an |
15 years product warranty / 30 years performance warranty
Series-level specifications — valid for the product family
AIKO-G660-MCH72Dw is the maximum power version of the Stellar 1N+72 Dual-Glass series (635-660 W), a bifacial module with 144 N-type ABC (All Back Contact) cells in a 6 x 24 configuration. On the 2382 x 1134 x 30 mm footprint the 660 W correspond to a front efficiency of 24.4%, the peak value of the series.
The laminate is glass-glass, with two tempered 2.0 mm sheets and a 30 mm anodised aluminium frame; the bifaciality factor declared on the platform is 65 +/-5%, so on surfaces with good albedo the rear face adds extra energy. The temperature coefficients are -0.26 %/grad C for power, -0.22 %/grad C for Voc and +0.05 %/grad C for Isc - among the best values on the market, which translates into smaller losses in the peak hours of summer.
The module withstands 5400 Pa front load and 2400 Pa on the back, has a maximum system voltage of 1500 V DC and MC4 EVO2 / EVOA connectors. The mass is about 33 kg. The absence of the metal grid on the front of the cell reduces the risk of microcracks and hot spots and offers a good tolerance to partial shading. The manufacturer declares degradation below 1% in the first year and below 0.35% per year afterwards. Note: the individual electrical values (Voc/Isc/Vmp/Imp) of this SKU have not been confirmed on the individual datasheet; the data above are those valid for the Stellar 1N+72 Dual-Glass series.
More energy from the same roof area: 600 W from a single module, at 23.2% efficiency, with the contacts moved to the back for a fully active front face.
Fewer parts and faster installation for the same power: 615 W per module, at 23.8% efficiency, in a panel of 27 kg and 2278x1134x30 mm.
455 W and 22.8% efficiency in a 21.5 kg panel, with cells without metal contacts on the front and low losses in heat.
The front of the panel has no metal stripes: 450 W, 22,6% efficiency and only 21,5 kg, with good behaviour under partial shading.
