Light for its output, no clear weak spot
AIKO Stellar ABC N-Type Mono-Glass panels introduce revolutionary All Back Contact technology, which completely eliminates cell shading by front busbars. By moving all contacts to the back of the module, ABC technology ensures a maximum light absorption surface, which directly translates into the highest energy conversion efficiency available on the market. It is an ideal solution for investors seeking maximum yields from limited roof space, effectively solving the problem of energy losses found in traditional designs. The Stellar series stands out with its partial shading optimization function, allowing the system to operate efficiently even in difficult lighting conditions or with periodic surface dirt. The use of pure N-type silicon guarantees minimal degradation and an excellent temperature coefficient, ensuring that the modules maintain power stability even during summer heat. An aesthetic finish and elegant design without visible silver connections make the panels blend perfectly with modern premium architecture. This product is dedicated to demanding residential users and dynamic enterprises, where long-term reliability and the lowest levelized cost of energy matter. Compared to the competition, Stellar stands out with its unique cell architecture, which physically prevents the occurrence of hot-spots, significantly increasing fire safety and the durability of the entire photovoltaic installation.
Ranking
Signals from the data
Residential, commercial, utility-scale, hot-climate and shaded-installations.
Top 13% of the N-type 650-700 W segment, against a median of 50.9.
Top 17% of the N-type 650-700 W segment, against a median of 233.2.
Top 17% of the N-type 650-700 W segment, against a median of 23.30%.
The Stellar series achieves up to 24.4% module efficiency – a result confirmed by TaiyangNews as the highest among mass-produced modules globally (a ranking maintained since March 2023, and reconfirmed at SNEC 2025). The ABC technology eliminates shading of cells caused by the front collective rails, which is a physical advantage that cannot be achieved by competing LONGi Hi-MO 9 and Canadian Solar TOPBiHiKu6 modules based on TOPCon.
This is the lowest temperature coefficient among mass-produced modules – approximately 13% better than the standard TOPCon (-0.30%/°C) and approximately 24% better than PERC (-0.34%/°C). At typical operating temperatures for modules in Poland (55–65°C during the summer peak), this translates to a real increase of approximately 1.5–2% in energy generation during the summer months compared to the competition (TOPCon).
The annual degradation rate of ≤0.35% (LID below 1% in the first year) outperforms standard TOPCon (≤0.40%/year) and PERC (≤0.45%/year). Over a 30-year linear power guarantee, this translates to a cumulative loss of approximately 1.5% lower than typical TOPCon, resulting in approximately 450-600 kWh more energy production over the entire lifespan, particularly in a 10 kWp installation.
AIKO holds Tier 1 BloombergNEF status, confirmed for Q1 2026 – an award given to approximately 2% of the 17,000 solar manufacturers globally. This status is a standard requirement for obtaining bank financing for PV projects and protects investors from the risk of the manufacturer's bankruptcy within the 30-year warranty period.
ABC architecture moves all electrical contacts to the rear of the cell, physically preventing the formation of hot spots. TÜV Nord confirmed a 30% higher energy yield compared to traditional technology under full shading of a single cell – a key advantage in installations with chimneys, skylights, or nearby vegetation.
The Stellar Mono-Glass series offers a 15-year product warranty (on materials and workmanship), while AIKO for other series and the market standard tier-1 (LONGi Hi-MO 9, Canadian Solar TOPBiHiKu6) offers a 25-year warranty. The 10-year difference in warranty coverage translates to a significantly higher risk of incurring non-refundable module replacement costs during the 16th to 25th year of operation.
The Mono-Glass (is_bifacial: false) configuration excludes reflected light from the back, which both the Sunpro TOPCon 210 BIFACIAL and the Canadian Solar TOPBiHiKu6 offer in ground-mounted and carport installations (+5–15% additional annual energy yield with a ground albedo of 0.2–0.5). In projects where bifaciality is a key design factor, this series loses its relative advantage compared to selected comparable products.
The production cost of ABC technology is higher than that of mass-produced TOPCon. In European markets, AIKO ABC modules are priced approximately 15–25% higher per Wattpeak compared to comparable TOPCon modules (e.g., Canadian Solar TOPBiHiKu6), increasing the CAPEX for installations. The premium is justified due to limited roof space, but it reduces profitability in large commercial projects with ample available space.
- Efficiency of 24.4% is 1.1pp above the N-type 650-700W median (23.3%)
- 244.3 W/m² power density - 11.1 W/m² more than N-type 650-700W median (233.2 W/m²), more power per roof area
- At -0.26%/°C (vs median -0.29%/°C), loses ~1% less power in hot conditions
- Weight of 31.5 kg (2.0 kg below N-type 650-700W median of 33.5 kg) allows easier transport and roof mounting
- #99 for efficiency, #511 for temperature performance out of 14005 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 660 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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