Skip to main content
Huasun Brand review

RS425S8-108GANT

425 Wp TOPCon Bifacial
ComparePV verdict

Middle of its segment, heavy for its output

Rank 10,070 of 14,129
Compare panels Datasheet PDF
Power (Wp)
425
Typical for its class
Efficiency (%)
21.76
Typical · median 22.00%
Density (Wp/m²)
217.6
Typical · median 220.2
Temp (%/°C)
-0.310
Weak · bottom 10%
Weight (kg)
24.5
Weak · 2.5 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Huasun Aurora Pro RS420~445S8-108GANT series is designed for high energy production in locations where every square meter of installation space matters. The use of a dual-sided design allows for better utilization of reflected light from the ground, which translates directly into higher yields compared to standard single-sided modules. Another key advantage is the N-type cell technology, which reduces typical performance drops at startup and ensures more stable production over a longer period.

In practice, these modules address two common issues in Polish conditions: weaker generation in cloudy weather and power losses in hot weather. This is facilitated by excellent performance even in low-light conditions and favorable temperature characteristics. The dual-glass construction increases resistance to environmental conditions, while the refined manufacturing process supports high PID resistance.

This is an ideal choice for premium rooftop installations, PV farms, and C&I projects where durability, predictable yields, and a better energy balance throughout the year are priorities.

Ranking

1,220 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.76% 22.00% Typical 7,349
Power density 217.6 220.2 Typical 7,235
Temperature coefficient -0.310 -0.290 Weak · bottom 10% 8,069
Weight per kWp 57.6 51.5 Weak · bottom 10% 11,411
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

4 positive · 5 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Weight-limited structures and hot climates.

Watch-outs
57.6 kg per kWp

Bottom 10% of the TOPCon 400-450 W segment, against a median of 51.5. Ranked 11,411th in the whole database.

-0.310 %/°C temperature coefficient

Bottom 10% of the TOPCon 400-450 W segment, against a median of -0.290.

What owners get
Highest efficiency in peer group

Peak module efficiency of 22.79% outperforms Q-Cells Q.TRON BLACK (22.3%) by 0.49 pp and Solitek SOLRIF D Satin (22.06%) by 0.73 pp, placing the series at the top of all four peer comparables in the 108-cell TOPCon segment.

Bifacial N-type TOPCon cell technology

N-type TOPCon cells eliminate LID (Light Induced Degradation) present in PERC modules, reducing year-1 power loss. Bifacial design adds a typical 5-25% bifacial gain depending on ground albedo, which is especially valuable for ground-mount systems with bright gravel ballast or white roofing membranes.

30-year linear power warranty

The 30-year power warranty extends yield certainty 5 years beyond Q-Cells Q.TRON BLACK, which guarantees linear performance for 25 years (to 90.58% of nominal power at 0.33%/year degradation). The extended horizon has a direct positive impact on LCOE calculations for C&I and utility-scale projects.

BNEF Tier 1 - full bankability (Q1 2025)

Huasun confirmed BNEF Tier 1 manufacturer status for Q1 2025, enabling project finance for PV systems built with these modules and satisfying the approved manufacturer list (AML) requirements of infrastructure funds and senior lenders.

Trade-offs
Shorter product warranty than segment leader

The product warranty covers 15 years, while Q-Cells Q.TRON BLACK offers a 25-year product warranty - 10 years longer. For C&I and industrial installations, the reduced coverage against manufacturing defects and physical failures may be a disqualifying factor during supplier selection.

Short operating history vs. 30-year warranty obligation

Huasun was founded in 2020, giving the company approximately 5 years of track record, while the 30-year power warranty requires confidence in the manufacturer's financial viability through approximately 2053+. By comparison, Q-Cells (est. 1999) has over 25 years of operating history and Solitek (est. 2011) over 13 years.

TOPCon as a secondary line at an HJT-focused manufacturer

Huasun is the global HJT leader with 20 GW of production capacity and the flagship Himalaya HJT series achieving 24.75% module efficiency. Aurora Pro TOPCon is a complementary offering, which may imply lower dedicated R&D investment, slower product iteration, and reduced technical support resources compared to the primary HJT line.

Notes from the database
  • At 21.8% efficiency, this panel is on par with typical TOPCon 400-450W modules
  • At 217.6 W/m² power density, roof space requirements are typical for TOPCon 400-450W panels
  • -0.31%/°C temperature coefficient - 0.02pp worse than TOPCon 400-450W median (-0.29%/°C), expect higher hot weather losses
  • Weight of 24.5 kg is 2.5 kg above TOPCon 400-450W median (22.0 kg) - verify structural support
  • In the top 52% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 425 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.76 % Typical Segment median 22.00%
Vmpp · Impp 31.82 V · 13.36 A Operating point at max power
Voc · Isc 38.21 V · 14.13 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×35 mm · 1.95 m² of roof
Weight 24.5 kg Weak Weak · 2.5 kg above median
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.310 %/°C Weak bottom 10% of its segment
Coefficient Voc · Isc -0.260 · 0.046 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 371 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

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
-

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
-

Alternatives

All Huasun panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Huasun RS425S8-108GANT 425 W 21.76% -0.310 24.5 kg You are here
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +50 W, +2.2 pp, +10 yr warranty
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +40 W, lighter, +2.0 pp
JAT54S40-475/LR 475 W 23.80% -0.260 19.3 kg +50 W, lighter, +2.0 pp
TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg +50 W, cooler, +2.0 pp
CHSM48RN(DG)/F-BH-475 475 W 23.80% -0.290 24.5 kg +50 W, cooler, +2.0 pp
AIKO-A475-MCE54Mw 475 W 23.80% -0.260 21.0 kg +50 W, cooler, +2.0 pp
AIKO-A475-MAH54Mw 475 W 23.80% -0.260 21.5 kg +50 W, cooler, +2.0 pp
RS420S8-108GANT 420 W 21.51% -0.310 24.5 kg -0.2 pp
RS430S8-108GANT 430 W 22.02% -0.310 24.5 kg +0.3 pp
RS435S8-108GANT 435 W 22.28% -0.310 24.5 kg +10 W, +0.5 pp
RS440S8-108GANT 440 W 22.53% -0.310 24.5 kg +15 W, +0.8 pp
RS445S8-108GANT 445 W 22.79% -0.310 24.5 kg +20 W, +1.0 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +85 W, cooler, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +70 W, cooler, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +80 W, cooler, +2.9 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +80 W, cooler, +2.9 pp

Found 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1928 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here

About the Aurora Pro RS420~445S8-108GANT series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What warranty does Huasun offer on the Aurora Pro RS420~445S8-108GANT series?
Huasun provides a 15-year product warranty on the Aurora Pro RS420~445S8-108GANT modules, covering manufacturing defects and material failures. The linear power output warranty extends to 30 years, guaranteeing a gradual and predictable degradation curve. N-type TOPCon cells inherently exhibit lower degradation rates compared to PERC modules, so real-world energy yields remain higher throughout the system's lifetime.
What does TOPCon technology in the Aurora Pro RS420~445S8-108GANT mean, and how does it compare to PERC?
The N-type TOPCon cells used in the Aurora Pro RS420~445S8-108GANT deliver higher conversion efficiency and a better temperature coefficient than standard P-type PERC cells. This translates to lower power losses on hot days and eliminates the initial Light-Induced Degradation (LID) typical of PERC technology. In practice, TOPCon modules generate more kilowatt-hours per year at the same rated peak power.
Is the Aurora Pro RS420~445S8-108GANT a bifacial panel, and when does it actually pay off?
Yes, the Aurora Pro RS420~445S8-108GANT is a bifacial module. The rear side captures light reflected from the ground surface (albedo), potentially boosting annual energy yield by several percentage points. The gain is greatest over light-colored surfaces such as gravel, concrete, or snow. On a dark bituminous roof the bifacial gain is smaller but still measurable and contributes to a better overall LCOE.
Do the Huasun Aurora Pro RS420~445S8-108GANT panels perform well in overcast conditions and Central European climates?
Yes. N-type TOPCon cells demonstrate superior low-light performance compared to P-type technologies, which is particularly relevant in climates where a significant share of annual irradiation comes from diffuse light on cloudy days. The dual-glass construction also provides enhanced moisture resistance, making these modules well-suited for humid or variable weather conditions.
Are the Aurora Pro RS420~445S8-108GANT modules suitable for pitched roof installations, and what are the panel dimensions?
The Aurora Pro RS420~445S8-108GANT series is designed for both rooftop and ground-mounted installations. The 108 half-cut cell format fits into typical dimensions of approximately 1722 × 1134 mm, making transport and installation on pitched roofs straightforward. The glass-glass construction adds weight compared to glass-backsheet variants, so verifying roof load capacity with a structural engineer is recommended before installation.
Does the Huasun Aurora Pro RS420~445S8-108GANT actually reach 445 W under real-world conditions?
The 445 W peak power rating is measured under Standard Test Conditions (STC: 1000 W/m², 25°C). Field output depends on actual irradiance, ambient temperature, and angle of incidence. However, the favorable temperature coefficient of N-type TOPCon cells means power losses at elevated temperatures are lower than with PERC modules, keeping real-world production closer to nameplate ratings on warm, sunny days.
Add to compare