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AC-450TGBL/108BB

450 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, weak in heat

Rank 5,180 of 14,005
Compare panels Datasheet PDF
Power (Wp)
450
Weak · bottom 9%
Efficiency (%)
22.52
Typical · median 22.52%
Density (Wp/m²)
225.2
Typical · median 225.2
Temp (%/°C)
-0.310
Weak · bottom 6%
Weight (kg)
25.0
Weak · 1.0 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Axitec AXIblackbiperfect GL series represents a breakthrough combination of aesthetics and the highest energy efficiency, dedicated to the most demanding rooftop systems. The use of innovative N-Type TOPCon cells allows for achieving excellent performance parameters at high temperatures and a better response to diffused light, which guarantees stable yields throughout the year. A key differentiator is the double-sided glass-glass construction, which ensures extreme resistance to mechanical loads and aggressive environmental factors, eliminating the risk of rapid degradation. Thanks to the use of bifacial technology, these modules effectively utilize energy reflected from the ground, which significantly increases the total efficiency of the installation compared to traditional panels. Visually, the series impresses with its deep black Full Black standard, making the cells almost invisible against the roof covering. This is an ideal solution for investors looking for a premium product that combines fire safety with many years of reliability. By choosing these modules, you eliminate concerns about component durability, opting for technology resistant to the passage of time and changing weather conditions. This is the optimal choice for modern single-family homes, where every watt of power and perfect design matter.

Ranking

1,089 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.52% 22.52% Typical 4,108
Power density 225.2 225.2 Typical 4,225
Temperature coefficient -0.310 -0.290 Weak · bottom 6% 8,005
Weight per kWp 55.6 52.2 Weak · bottom 11% 9,909
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 4 caution
Best for

Residential and hot-climate.

Not ideal for

Hot climates and weight-limited structures.

Watch-outs
-0.310 %/°C temperature coefficient

Bottom 6% of the TOPCon 450-500 W segment, against a median of -0.290. Ranked 8,005th in the whole database.

55.6 kg per kWp

Bottom 11% of the TOPCon 450-500 W segment, against a median of 52.2.

What owners get
22.02–23.02% Efficiency – Segment-Leading Performance

The top-tier variant (460 Wp, 23.02%) matches the SunKean SKT440~460M12-96D4 (23.02%) and marginally outperforms the Risen RSM96-11 (23.00%), while surpassing the Zonergy ZPM MH3-72 by 1.86 percentage points (21.16%). Even the base 440 Wp variant (22.02%) places the series above the segment median.

N-type TOPCon: Low Temperature Coefficient

The datasheet-confirmed temperature coefficient of -0.31%/°C for Pmpp outperforms typical P-type PERC modules (-0.35 to -0.37%/°C), resulting in lower power losses on hot days. Degradation of ≤1% in the first year and ≤0.40%/year thereafter guarantees retention of >87.4% of rated power after 30 years of operation.

30-Year Product and Power Warranty

Axitec provides a full 30-year product warranty alongside a 30-year linear power warranty — a standard that exceeds the offering of many major players (Trina Solar, JA Solar) that stop at 25 years. With degradation of ≤0.40%/year, investors can accurately model energy yields over the full loan term.

Glass-Glass Bifacial Construction – Durability and Additional Yield

Dual 2.0 mm glass panes eliminate the risk of backsheet degradation (EVA yellowing), PID, and microcracks under extreme mechanical loads. Bifacial technology enables up to 30% additional energy yield (per manufacturer datasheet) in installations with high-albedo ground surfaces, such as white roofing membranes or gravel.

Full Black Without Performance Compromise

The series combines a full-black aesthetic (black cells, black cell gaps, black frame) with 22.02–23.02% efficiency — most lower-cost full-black solutions based on P-type PERC achieve only 20–21%. An optimal choice for premium residential applications where appearance is as important as performance.

Trade-offs
No BNEF Tier-1 Status (Q1 2026)

Axitec does not appear on the BNEF bankable Tier-1 list (confirmed for Q1 2026), unlike direct competitor Risen Energy. This may complicate the structuring of project finance for commercial installations >100 kWp, where financial institutions require Tier-1 status as a condition for lending.

Higher Module Weight with Glass-Glass Construction (25 kg)

Modules weigh 25 kg — approximately 10–15% more than comparable glass-backsheet variants (~21–22 kg, e.g., the Risen RSM96-11 in its standard version). For installations on older rooftops with limited load-bearing capacity, a prior structural engineering assessment is required, generating additional project costs.

Notes from the database
  • Efficiency of 22.5% matches the TOPCon 450-500W median
  • Power density of 225.2 W/m² matches the TOPCon 450-500W median
  • At -0.31%/°C, loses 0.02pp more power per degree than TOPCon 450-500W median (-0.29%/°C)
  • At 25.0 kg, weight matches the TOPCon 450-500W median
  • 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 450 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.52 % Typical Segment median 22.52%
Vmpp · Impp 33.24 V · 13.54 A Operating point at max power
Voc · Isc 39.98 V · 14.25 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1762×1134×30 mm · 2.00 m² of roof
Weight 25.0 kg Weak Weak · 1.0 kg above median
Cells 108 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.310 %/°C Weak bottom 6% of its segment
Coefficient Voc · Isc -0.260 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 30 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 393 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Axitec in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 450 Wp appear here. The rest cover the whole series.

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.310 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Axitec AC-450TGBL/108BB 450 W 22.52% -0.310 25.0 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +45 W, cooler, +2.3 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +40 W, cooler, +2.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +50 W, cooler, +2.0 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +50 W, cooler, +2.0 pp
GK-3-54HGb-500M 500 W 24.50% -0.260 21.4 kg +50 W, cooler, +2.0 pp
GCL-NR10R/54BGDF 500 W 24.50% -0.260 24.6 kg +50 W, cooler, +2.0 pp
AC-440TGBL/108BB 440 W 22.02% -0.310 25.0 kg -10 W, -0.5 pp
AC-445TGBL/108BB 445 W 22.27% -0.310 25.0 kg -0.2 pp
AC-455TGBL/108BB 455 W 22.77% -0.310 25.0 kg +0.2 pp
AC-460TGBL/108WB 460 W 23.02% -0.310 25.0 kg +10 W, +0.5 pp
AC-465TGBL/108WB 465 W 23.27% -0.310 25.0 kg +15 W, +0.8 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +60 W, cooler, +2.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +55 W, cooler, +2.2 pp

Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty is offered on Axitec AXIblackbiperfect GL panels?
The AXIblackbiperfect GL series comes with a 30-year product warranty and a 30-year power output warranty. The manufacturer guarantees that after 30 years of operation the module will retain more than 87.4% of its original rated power. Degradation is capped at a maximum of 1% in the first year and no more than 0.4% per year in subsequent years. This is one of the longest warranties currently available in the photovoltaic panel market.
What advantages does N-Type TOPCon technology offer in the AXIblackbiperfect GL panels compared to conventional cells?
N-Type TOPCon cells deliver higher efficiency of approximately 22%, improved performance at elevated operating temperatures, and significantly reduced susceptibility to LID (Light-Induced Degradation) during initial light exposure. In practice, this translates to greater annual energy yield compared to conventional P-Type PERC cells of the same rated power, particularly on overcast days and under diffuse irradiance conditions.
How much additional energy can be gained from the bifacial design of the AXIblackbiperfect GL panels?
Thanks to bifacial technology, the rear side of the module captures light reflected from the ground surface, rooftop, or surrounding environment. Axitec states an energy yield gain of up to 30% relative to a standard monofacial panel, though the actual gain depends on the albedo of the mounting surface and the installation tilt angle. The effect is most pronounced over white roofing membranes or light-colored gravel, while the gain is more modest on dark roofing substrates.
Can Axitec AXIblackbiperfect GL panels withstand heavy snow loads and strong wind pressure?
Yes, the glass-glass construction provides exceptional mechanical resilience. The modules are tested to withstand a front-side load of 5,400 Pa and a rear-side suction load of 2,400 Pa, corresponding to extreme weather conditions. The absence of a back-sheet eliminates the risk of delamination and microcracks caused by thermomechanical stress. This makes the AXIblackbiperfect GL series a reliable choice for both high-snowfall regions and high-wind locations.
Does the AXIblackbiperfect GL series integrate aesthetically with modern rooftops, and what does it look like up close?
The series is designed to a Full Black standard: black cells, black inter-cell spacing on the rear side, and a black anodized aluminum frame. As a result, the modules form a uniformly black surface that blends almost seamlessly with dark roofing materials. This solution is highly valued by owners of modern single-family homes and by architects who are unwilling to compromise between visual appearance and system performance.
Is Axitec a trustworthy manufacturer, and how does warranty service work in Poland?
Axitec is a German-headquartered brand that has been active in the photovoltaic market for over a decade. The company is not classified in the Bloomberg NEF Tier 1 ranking; however, its modules are distributed through a network of authorized distributors with a presence in Poland. Before purchasing, it is advisable to confirm that the selected installer or distributor provides support throughout the warranty claims process, as manufacturer warranty service is handled exclusively through official sales channels.
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