Skip to main content
Sunpro Power SPDG635-N144RX10
Sunpro Power Brand review

SPDG635-N144RX10

635 Wp TOPCon Bifacial 1500%
ComparePV verdict

Middle of its segment, weak in heat

Rank 910 of 14,005
Compare panels Datasheet PDF
Power (Wp)
635
Strong · top 16%
Efficiency (%)
22.72
Typical · median 22.80%
Density (Wp/m²)
227.2
Typical · median 227.7
Temp (%/°C)
-0.300
Weak · bottom 19%
Weight (kg)
33.6
Typical · median 32.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Sunpro 199R TOPCon BIFACIAL series is an advanced solution based on rectangular N-type cells that maximize module surface utilization. Thanks to the use of bifacial dual glass technology, these panels effectively generate additional energy from both sides, making them an ideal choice for ground-mounted installations and flat roofs with bright roofing. A key differentiator is the use of TOPCon cells, which guarantee higher conversion efficiency and excellent performance even in low light conditions, which is a priority in the Polish climate zone. These modules effectively eliminate light-induced degradation, offering users minimal power loss over several decades of operation. The robust dual-glass construction ensures extraordinary resistance to corrosive factors and extreme mechanical loads, significantly surpassing standard monofacial modules. This series was created for investors seeking maximum power density while reducing BOS system costs. What sets them apart from the competition is the unique cell format, which simplifies logistics and installation, making these panels the most cost-effective choice for professional photovoltaic farms and modern enterprises focusing on energy self-consumption.

Ranking

1,086 panels in the segment TOPCon 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.72% 22.80% Typical 3,245
Power density 227.2 227.7 Typical 3,252
Temperature coefficient -0.300 -0.290 Weak · bottom 19% 6,093
Weight per kWp 52.9 53.1 Typical 6,627
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 1 caution
Best for

Utility-scale and commercial.

Not ideal for

Hot climates.

Watch-outs
-0.300 %/°C temperature coefficient

Bottom 19% of the TOPCon 600-650 W segment, against a median of -0.290.

Notes from the database
  • At 22.7% efficiency, this panel is on par with typical TOPCon 600-650W modules
  • Power density of 227.2 W/m² matches the TOPCon 600-650W median
  • Temperature coefficient of -0.30%/°C matches the TOPCon 600-650W median
  • In the top 23% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 635 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.72 % Typical Segment median 22.80%
Vmpp · Impp 44.07 V · 14.41 A Operating point at max power
Voc · Isc 52.65 V · 15.23 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2465×1134×33 mm · 2.80 m² of roof
Weight 33.6 kg Typical Typical · median 32.7 kg
Cells 144 · TOPCon Monocrystalline
Bifaciality 1500 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 19% of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 555 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Sunpro Power in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 635 Wp appear here. The rest cover the whole series.

Linear Power Warranty: SUNPRO TOPCon Module vs Common Module Linear Power Warranty: SUNPRO TOPCon Module vs Common Module 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
-0.300 %/°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
Sunpro Power SPDG635-N144RX10 635 W 22.72% -0.300 33.6 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +2.5 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +45 W, lighter, +2.5 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +40 W, lighter, +2.3 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +2.3 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +2.1 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg Cooler, lighter, +2.1 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Cooler, lighter, +2.1 pp
SPDG625-N144RX10 625 W 22.36% -0.300 33.6 kg -10 W, -0.4 pp
SPDG630-N144RX10 630 W 22.54% -0.300 33.6 kg Very close match
SPDG640-N144RX10 640 W 22.90% -0.300 33.6 kg Very close match
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +65 W, cooler, +2.3 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +60 W, cooler, +2.2 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +35 W, cooler, +2.1 pp

Found 616 panels of the same or similar size to this one, within ±10 mm. See them here Found 616 panels of the same or similar size to this one, within ±25 mm. See them here Found 616 panels of the same or similar size to this one, within ±50 mm. See them here Found 1813 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does the Sunpro 199R TOPCon BIFACIAL panel differ from standard monofacial modules?
The 199R series uses bifacial dual glass technology, meaning the module generates power from both the front and rear sides. With proper installation, such as on a light-colored ground surface or flat roof, this results in a higher energy yield compared to standard monofacial panels of similar surface area.
What is the maximum power output of the 199R TOPCon BIFACIAL series?
Panels in this series reach up to 640 Wp of maximum power output. This is a high value for a single module, achieved through rectangular N-type TOPCon cells that make better use of the available surface area and deliver higher conversion efficiency.
What warranty applies to the Sunpro 199R TOPCon BIFACIAL panels?
The manufacturer offers a 25-year product warranty and a 30-year linear power output warranty. This means that over three decades of use, the panel maintains its guaranteed power level, with minimal degradation thanks to TOPCon technology reducing light-induced degradation.
Are the 199R bifacial TOPCon panels suitable for a sloped roof installation?
These panels are primarily designed for ground-mounted systems and flat roofs with light-colored surfaces, where the bifacial gain is best utilized. On a sloped roof with a dark surface, the rear side won't receive enough reflected light, so the benefit of bifacial technology will be limited.
Do TOPCon panels perform well in low-irradiance climates like Poland's?
Yes, N-type TOPCon cells offer better performance under low irradiance and lower temperatures compared to older PERC technology. This is a significant advantage in Poland's climate, where much of the year involves diffuse or weaker sunlight, yet the module still generates power efficiently.
Who manufactures Sunpro Power panels, and are they a Tier 1 supplier?
Sunpro Power is headquartered in China and classified as a Tier 1 manufacturer, indicating financial stability, large production capacity, and years of experience in the solar industry. Tier 1 status is an important criterion for project bankability and the long-term reliability of warranty claims.
Add to compare