Light for its output, no clear weak spot
AIKO Nebular 2P (Mono-Facial Module 430W-460W) was designed for maximum yield per square meter, without complicating the installation project. Its key feature is the use of n-type ABC (All Back Contact) cells, where the conductive elements are placed on the back of the cell - this allows the front of the module to better utilize light while maintaining an elegant, uniform appearance. In practice, this translates to higher efficiency and greater power output from the same surface area, which is particularly important for rooftops with limited space.
The Nebular 2P also focuses on optimization for partial shading, helping maintain production when shade appears locally (e.g., from a chimney, antenna, or tree). Additionally, the construction is designed for resistance to microcracking, supporting stable parameters over time. This is an excellent choice for residential and commercial rooftop installations where high yield, aesthetics, and reliable performance under real-world conditions are key.
Ranking
Signals from the data
Residential, commercial, hot-climate and cold-climate.
Top 3% of the Back Contact 400-450 W segment, against a median of 48.2. Ranked 72nd in the whole database.
Top 9% of the Back Contact 400-450 W segment, against a median of -0.290. Ranked 511th in the whole database.
The ABC (All Back Contact) N-type technology achieves a Pmax temperature coefficient of -0.26%/°C, compared to the typical -0.30%/°C for TOPCon and -0.35%/°C for PERC. In the Polish climate (with surface temperatures of 50–60°C in summer), this translates to a significantly higher power output on hot days compared to most Tier-1 panels in this power segment.
The 460W module weighs only 8.6 kg, while standard panels with similar power (e.g., Risen RSM96-11-460BNDG) typically weigh around 20-23 kg. This allows for installation on roofs with limited load-bearing capacity and significantly reduces installation costs and time (lighter sub-structures, one-person installation).
N-type ABC cells exhibit an annual degradation rate of approximately 1% in year 1 and ~0.35%/year in years 2–25, which is approximately 1.2 percentage points better than comparable TOPCon modules after 25 years (data from AIKO, confirmed by independent analysis by TaiyangNews 2024). The power warranty covers ≥90.6% of the nominal power after 25 years, which exceeds the typical 84.8–87% for 25-year warranty TOPCon models on the market.
Placing all electrical contacts on the back of the cell eliminates shading caused by bus bars and metallic fingers, which in traditional modules absorb 4–6% of incident light. This results in a module efficiency of up to 23% – on par with direct competitors (Risen 23%, SunKean 23.02%) while simultaneously eliminating LID (Light-Induced Degradation), a characteristic issue for P-type silicon modules.
The manufacturer subjects the modules to tests that go beyond IEC standards, with a particular focus on resistance to acid corrosion and PID (Potential-Induced Degradation). As a Tier-1 supplier listed on the BNEF (Bloomberg New Energy Finance) list, the manufacturer guarantees access to project financing and a stable supply chain.
The Nebular 2P series offers a 12-year product warranty, while many Tier-1 manufacturers in the premium N-type segment (including Risen, Jinko, and LONGi) have increased their warranties to 15 years since 2023. For commercial installations financed by banks, this could be a contractual risk factor.
The series is not bifacial (is_bifacial: false), which eliminates the possibility of obtaining an additional 5-15% of energy from the ground's albedo. In ground-mounted or rooftop installations (e.g., gravel, metal), bifacial alternatives in a similar price range (e.g., those from Risen or SunKean) can generate significantly higher annual yields.
- At 22.0% efficiency, this panel is on par with typical Back Contact 400-450W modules
- At 220.2 W/m² power density, roof space requirements are typical for Back Contact 400-450W panels
- At -0.26%/°C (vs median -0.29%/°C), loses ~1% less power in hot conditions
- At 8.6 kg, this panel is 12.2 kg lighter than Back Contact 400-450W median (20.8 kg) - easier handling during installation
- In the top 47% for efficiency among all Back Contact panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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