Light for its output, no clear weak spot
The AIKO Comet 2U (AIKO-G-MCH72Mw) is a monocrystalline mono-glass module series designed for maximum yield from the same rooftop or ground area. Its key advantage is the n-type ABC (All-Back Contact) technology - all the metalization is located on the rear side of the cell, leaving the front side free from busbars and fingers, which improves light absorption and the aesthetics of the installation. In practice, this translates to higher energy production in real-world conditions, especially where every square meter counts.
The Comet 2U addresses typical challenges faced by installers and investors: thanks to better performance at high temperatures, the modules maintain their power output more steadily during summer, and the refined structure supports resistance to micro-cracks, limiting the risk of performance degradation over time. This is the series for demanding projects - from homes with limited roof pitches, through commercial roofs with high self-consumption targets, to utility-scale farms where BOS costs and long-term reliability matter. Compared to many TOPCon or PERC solutions, it stands out for its focus on yield, safety, and longevity, rather than just catalog parameters.
Ranking
Signals from the data
Residential, commercial, utility-scale and hot-climate.
Top 5% of the Back Contact 650-700 W segment, against a median of 49.8. Ranked 205th in the whole database.
Top 12% of the Back Contact 650-700 W segment, against a median of 24.40%.
Top 12% of the Back Contact 650-700 W segment, against a median of 244.3.
The Comet 2U series achieves an efficiency of 24.6-24.8%, while direct benchmarks in this segment (Hiwatt HW-M12/132H, Runergy Lumina I, Techwise Summit) reach 21.57-21.6%. This difference of approximately 3% translates to around 14% more energy production from the same area, which is crucial when roof space is limited or the cost of land is high.
A value of -0.26°C/°C is among the lowest figures for silicon-based modules in mass production - standard PERC modules achieve -0.35°C/°C, while most TOPCon modules range from -0.28 to -0.30°C/°C. In typical Polish summer conditions (module temperature of 60-70°C), this translates to a real increase of several percentage points in energy yield compared to standard PERC modules with the same rated power.
The manufacturer guarantees a degradation of ≤1% in the first year and ≤0.35%/year from the second year, with a minimum power output of ≥88.85% of the nominal value after 30 years. For comparison, typical mass-produced modules in the PERC and older TOPCon segments (PERC, older TOPCon) typically have a power output of 84-87% after 25-30 years. The lower degradation is due, in part, to the absence of LID (Light Induced Degradation), which is characteristic of P-type solar cells.
Transferring the entire metallization to the back of the cell eliminates front shading caused by fingers and busbars (estimated losses of 2-4% in conventional modules) and completely eliminates LID/LeTID susceptibility. The result is higher absorption at diffuse light and more stable operation throughout the entire lifespan of the installation - an advantage that cannot be achieved in either PERC or standard TOPCon architectures.
AIKO is listed on the BNEF Tier 1 PV Module Manufacturers list since Q3 2025 (confirmed in Q1 2026), which means it has the ability to secure financing from independent commercial banks. The "bankability" status is required by most financial institutions funding PV farm projects exceeding 1 MWp, and it reduces the cost of capital for the investor.
The standard product warranty is 15 years (with the option to extend to 25 years under separate terms), while premium manufacturers such as REC Group and Q Cells offer a 25-year product warranty as standard, without any additional fees. For projects with a 20+ year financing horizon, extending the warranty should be considered as an additional cost or contractual risk.
- Efficiency of 24.8% matches the Back Contact 650-700W median
- 248.0 W/m² power density - 3.7 W/m² more than Back Contact 650-700W median (244.3 W/m²), more power per roof area
- At -0.26%/°C, hot weather performance is typical for Back Contact 650-700W panels
- 28.2 kg weight - 4.6 kg lighter than Back Contact 650-700W median (32.8 kg), reducing installation effort
- #13 for efficiency, #515 for temperature performance out of 14129 panels
Specifications
Datasheet charts
Measured curves published by AIKO in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 670 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Found 1144 panels of the same or similar size to this one, within ±10 mm. See them here Found 1150 panels of the same or similar size to this one, within ±25 mm. See them here Found 1261 panels of the same or similar size to this one, within ±50 mm. See them here Found 1942 panels of the same or similar size to this one, within ±100 mm. See them here
About the Comet 2U (AIKO-G-MCH72Mw) series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.