Middle of its segment, needs the roof space
AIKO Stellar 1N+66 is an advanced series of modules utilizing groundbreaking All-Back-Contact (ABC) cell technology, which completely eliminates energy losses resulting from front-side shading by busbars. By moving the contacts to the rear, the entire front surface of the module actively absorbs light, translating into unrivaled power density. A key innovation distinguishing this line is the partial shading optimization function, allowing modules to work efficiently in conditions where standard panels drastically lose efficiency. This solves the real problem of production drops caused by architectural elements, chimneys, or leaves. The Stellar series is primarily dedicated to large commercial installations and solar farms, where maximum return on investment matters most. What sets these panels apart from competing solutions is the exceptional minimal power degradation over time and excellent performance parameters at high temperatures. The use of N-type silicon in combination with a unique architecture makes AIKO Stellar 1N+66 an innovative premium-class solution for the most demanding investors. By choosing this technology, you are opting for energy production stability and the highest aesthetics without visible silver tracks. It is currently one of the most technologically advanced products available on the market.
Ranking
Price offers
| Shop | Country | Price | Per kWp | Stock | Offer updated | Link to shop |
|---|---|---|---|---|---|---|
| 7Sun | Poland | 466.07 zł incl. VAT | 717.03 zł/kWp | In stock | 8h ago | Visit shop |
| SolVolte Sklep | Poland | 516 zł incl. VAT | 793.85 zł/kWp | In stock | 22h ago | Visit shop |
Signals from the data
Commercial, utility-scale, shaded-installations, hot-climate and cold-climate.
Roofs where every square metre has to count and tight roof space.
Bottom 14% of the Back Contact 650-700 W segment, against a median of 244.3.
Bottom 20% of the Back Contact 650-700 W segment, against a median of 24.40%.
The series achieves peak efficiencies comparable to those of Longi Hi-MO 9 and Canadian Solar TOPBiHiKu6 (both 24.4%), while also exceeding Sunpro TOPCon 210 (23.32%) by more than 1 percentage point. Higher efficiency directly reduces the required roof or ground space for the same power output.
Standard TOPCon panels from comparable manufacturers (Longi, Canadian Solar) achieve -0.30%/°C. This 0.04% advantage means that at a module temperature of 70°C (typical summer, dark roof), AIKO losses are approximately 2% lower – resulting in a significant increase in yield during hot months on large-scale farms.
Guaranteed power loss below 1% in the first year and a maximum of 0.35%/year in years 2-30. Typical TOPCon panels degrade at approximately 0.40%/year, which after 30 years results in approximately 87% – a difference of 1.85% translates to an additional 12 MWh of energy per MW of installed capacity over the investment horizon.
Transferring all contacts to the rear of the cell eliminates the shadow cast by the metal contact frames, which cover 5–8% of the surface area in front-facing technologies (TOPCon, PERC). The entire active surface absorbs light, and the back contact architecture provides better performance under partial shading compared to competitors of the same power class.
The 2mm front and back glass eliminates the risk of delamination of the backsheet film and moisture ingress – common problems with backsheet modules after 15+ years of use. The bifacial design, up to 70%, allows for an additional energy gain of up to 25% from reflection off the ground, which is particularly cost-effective on ground-mounted farms with clear soil or snow.
The ABC technology requires dedicated, more expensive production lines. Market data from 2025 indicates a premium of 10–20% compared to comparable power modules in the TOPCon segment (e.g., Canadian Solar TOPBiHiKu6 or Longi Hi-MO 9). For projects where the key performance indicator (KPI) is the cost of capital expenditure (CAPEX) rather than maximum power output, the technological advantage may not offset the higher investment cost.
- Efficiency of 24.1% matches the Back Contact 650-700W median
- Power density of 240.6 W/m² is 3.7 W/m² below Back Contact 650-700W median (244.3 W/m²) - needs more roof space
- Temperature coefficient of -0.26%/°C matches the Back Contact 650-700W median
- 55% bifaciality enables rear-side power generation, boosting yield by 3-8% on reflective surfaces
- Ranked #219 out of 14005 panels for efficiency in the database
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 650 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
Found 1119 panels of the same or similar size to this one, within ±10 mm. See them here Found 1125 panels of the same or similar size to this one, within ±25 mm. See them here Found 1236 panels of the same or similar size to this one, within ±50 mm. See them here Found 1917 panels of the same or similar size to this one, within ±100 mm. See them here