Skip to main content
Sunpro Power SPDG645-BC132R12
Sunpro Power Brand review

SPDG645-BC132R12

645 Wp Back Contact Bifacial 2500%
ComparePV verdict

Solid all-round for its segment

Rank 280 of 14,005
Compare panels Datasheet PDF
Power (Wp)
645
Strong · top 11%
Efficiency (%)
23.88
Typical · median 23.70%
Density (Wp/m²)
238.8
Typical · median 236.9
Temp (%/°C)
-0.260
Typical · median -0.260
Weight (kg)
33.5
Typical · median 32.3 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Sunpro SPDG(640/665)-BC132R12 series is a breakthrough bifacial glass-glass solution that combines powerful rated power with exceptional durability in harsh environmental conditions. The use of advanced large-format cell technology allows for generating significant energy yields while optimizing the structural costs of the entire installation. A key differentiator of this series is its bifacial module activity, enabling energy harvesting from light reflected off the ground, which directly translates into higher investment profitability compared to standard single-sided panels. The double-glass construction guarantees maximum resistance to PID degradation and micro-cracks, effectively eliminating typical system longevity issues in the demanding Polish climate. These panels are designed for professional photovoltaic farms and modern industrial facilities, where the key factor is maximizing yield from the available area. Thanks to low temperature coefficients, the devices maintain very high efficiency even during intense sunlight and summer heat. Choosing this series is a guarantee of stable energy production for decades, clearly distinguishing it from less durable solutions available on the market. It is an ideal proposition for investors focusing on high-performance N-type technology and long-term capital security.

Ranking

72 panels in the segment Back Contact 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.88% 23.70% Typical 394
Power density 238.8 236.9 Typical 356
Temperature coefficient -0.260 -0.260 Typical 511
Weight per kWp 51.9 50.4 Typical 5,361
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 · 0 caution
Best for

Commercial and utility-scale.

Notes from the database
  • Efficiency of 23.9% matches the Back Contact 600-650W median
  • At 238.8 W/m² power density, roof space requirements are typical for Back Contact 600-650W panels
  • At -0.26%/°C, hot weather performance is typical for Back Contact 600-650W panels
  • Weight of 33.5 kg is 1.2 kg above Back Contact 600-650W median (32.3 kg) - verify structural support
  • In the top 3% for efficiency among all Back Contact panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 645 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.88 % Typical Segment median 23.70%
Vmpp · Impp 40.88 V · 15.78 A Operating point at max power
Voc · Isc 49.62 V · 16.46 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2382×1134×30 mm · 2.70 m² of roof
Weight 33.5 kg Typical Typical · median 32.3 kg
Cells 132 · Back Contact Monocrystalline
Bifaciality 2500 % Rear output as a share of front
Coefficient Pmax -0.260 %/°C Typical median -0.260 of its segment
Coefficient Voc · Isc -0.200 · 0.050 %/°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 88.8 % Equals 573 W guaranteed
Degradation 1.00 → 0.35 % 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 645 Wp appear here. The rest cover the whole series.

Linear performance warranty of 30 years Linear performance warranty of 30 years 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
-0.260 %/°C against a segment median of -0.260
-
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 SPDG645-BC132R12 645 W 23.88% -0.260 33.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Lighter, +1.3 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +35 W, lighter, +1.3 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +30 W, lighter, +1.1 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Lighter, +1.1 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +50 W, heavier, +1.0 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +25 W, lighter, +0.9 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +25 W, lighter, +0.9 pp
SP600W-210R-132DS 600 W 22.21% -0.240 32.6 kg -45 W, cooler, -1.7 pp
SP610W-210R-132DS 610 W 22.58% -0.240 32.6 kg -35 W, cooler, -1.3 pp
SPDG620-N132R12 620 W 22.95% -0.300 32.4 kg -25 W, hotter, -0.9 pp
SPDG625-N132R12 625 W 23.14% -0.300 32.4 kg -20 W, hotter, -0.7 pp
SPDG630-N132R12 630 W 23.32% -0.300 32.4 kg -15 W, hotter, -0.6 pp
SPDG635-N132R12 635 W 23.51% -0.300 32.4 kg Hotter, lighter, -0.4 pp
SPDG640-BC132R12 640 W 23.69% -0.260 33.5 kg Very close match
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +55 W, heavier, +1.1 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +25 W, lighter, +0.9 pp

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

Common questions

6 answered
Is the Sunpro SPDG(640/665)-BC132R12 panel series still available for purchase?
No, the SPDG(640/665)-BC132R12 series has been discontinued. Remaining warehouse stock may still be available through distributors, but Sunpro Power has replaced this line with newer models. When planning to expand an existing installation, check availability with local suppliers quickly, as remaining stock is limited and may sell out fast.
How does Back Contact technology in this series differ from classic PERC or TOPCon panels?
In Back Contact technology, all connecting elements, including busbars, are located on the rear side of the cell, leaving the front surface fully exposed to light. This eliminates shading losses caused by metallization grid lines, resulting in higher efficiency and a cleaner appearance compared to standard PERC or TOPCon panels.
What warranty comes with the Sunpro SPDG(640/665)-BC132R12 panels?
The manufacturer offers a 25-year product warranty and a 30-year power output warranty. This means that even after three decades of operation, the panel should retain a guaranteed percentage of its original rated power, a result above average for standard monocrystalline panels on the market.
How much extra energy can you realistically gain from the bifacial design of these panels?
Thanks to the glass-glass construction and bifacial cell design, the module can generate an additional 5-25% of energy from the rear side, depending on ground albedo, mounting height, and tilt angle. Best results occur over bright gravel, white roofing membrane, or snow, making this series particularly attractive for ground-mounted PV farms.
Will the BC132R12 series perform well in hot summer climates?
Yes, thanks to a low temperature coefficient, the panels' power output drops more slowly than typical modules during heat waves. This matters in summer when cell temperatures can exceed 60 degrees Celsius, causing panels with worse thermal parameters to lose as much as several percent of their output.
Is it worth buying 665 Wp panels despite the series being discontinued?
If the price is attractive and enough units are available to complete or expand an existing installation, it can still be a good decision, especially since the 665 Wp power rating and N-type Back Contact technology remain among the market's top-tier specs. However, confirm that the seller provides full warranty support despite the series no longer being in active production.
Add to compare