--- title: "Sunpro Power SPDG635-N132R12 635W Solar Panel - Specs & Review | ComparePV" description: "Sunpro Power SPDG635-N132R12 635W solar panel. Specs: 23.51% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunpro-spdg635-n132r12" updated: 2026-09-11 --- # Sunpro Power SPDG635-N132R12 Efficiency leader, weak in heat 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Sunpro Power - **Model:** SPDG635-N132R12 - **Series:** TOPCon 210R BIFACIAL - **Rated power:** 635 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 635 W | 620 W | Strong - top 16% | | | Module efficiency | 23.51% | 22.80% | Strong - top 8% | 696 | | Power density | 235.1 | 227.7 | Strong - top 9% | 741 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 19% | 6,093 | | Weight (kg) | 32.4 kg | 32.7 kg | Strong - top 24% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.51% | 22.80% | Strong - top 8% | 696 | | Power density | 235.1 | 227.7 | Strong - top 9% | 741 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 19% | 6,093 | | Weight per kWp | 51.0 | 53.1 | Strong - top 24% | 4,372 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **23.51% module efficiency** - Top 8% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 696th in the whole database. - **235.1 watts per square metre** - Top 9% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 741st in the whole database. - **51.0 kg per kWp** - Top 24% of the TOPCon 600-650 W segment, against a median of 53.1. ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 19% of the TOPCon 600-650 W segment, against a median of -0.290. - **Best for:** Utility-scale, commercial and hot-climate. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 635 W - **Efficiency:** 23.51 % - **Voltage at Pmax (Vmp):** 41.95 V - **Current at Pmax (Imp):** 15.14 A - **Open-circuit voltage (Voc):** 49.97 V - **Short-circuit current (Isc):** 16.03 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 15.00 ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 32.4 kg - **Area:** 2.70 m2 - **Power density:** 235.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 555 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 696 of 14005 | | Power density | 741 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 4372 of 14005 | | Warranty | 21 of 14005 | ## About this series Sunpro TOPCon 210R BIFACIAL panels are an advanced solution based on **rectangular N-type cells**, which redefine efficiency standards in utility-scale and commercial installations. The use of TOPCon technology allows for a significant reduction in recombination losses, resulting in higher efficiency even in challenging lighting conditions and under heavy cloud cover. A key feature of this series is its **bifacial double-sided design**, enabling the generation of additional energy from radiation reflected off the ground, which is particularly effective on ground-mounted farms and roofs covered with bright membranes. Thanks to the use of the innovative 210R format, these modules offer an optimal power-to-area ratio, effectively solving the problem of limited mounting space while reducing structure and cabling costs. This series eliminates the risk of LID and LeTID effects, guaranteeing **minimal annual degradation** and exceptional yield stability over years of operation. Compared to competing solutions, Sunpro TOPCon 210R BIFACIAL provides a **better temperature coefficient**, making them an ideal choice for investors seeking maximum return on capital in the Polish climate. This is professional equipment dedicated to photovoltaic farms and industrial facilities focusing on the highest durability and **maximum reduction of LCOE cost** thanks to high power density. ## Notable figures - At 23.5% efficiency, this panel is 0.7pp above typical \*\*TOPCon 600-650W\*\* modules (median: 22.8%) - At 235.1 W/m² power density, this panel generates 7.4 W/m² more per unit area than \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 600-650W\*\* panels - #696 for efficiency, #6093 for temperature performance out of 14005 panels ## Questions ### What is the maximum power output of Sunpro TOPCon 210R BIFACIAL panels? Modules in this series reach up to 635 Wp of maximum power. This is achieved through N-type TOPCon cell technology in the 210R format combined with a bifacial double-sided design, which further increases energy yield by generating current from the rear side of the panel. Thanks to the high power density per square meter, these panels are particularly well suited for utility-scale projects where optimal use of available space matters. ### How does a bifacial panel differ from a standard monofacial panel? A bifacial panel, unlike a standard monofacial module, generates energy from both the front and rear sides. The Sunpro TOPCon 210R BIFACIAL captures reflected radiation from the ground surface, which is especially effective on ground-mounted farms with light-colored terrain or gravel, as well as on roofs covered with white membrane. In practice this translates into an additional energy gain of a few up to over ten percent compared to a single-sided module of the same nominal power. ### What warranty comes with Sunpro TOPCon 210R BIFACIAL panels? Sunpro Power provides a 25-year product warranty along with a 30-year power output warranty. This means that over three decades of operation, minimal annual degradation is guaranteed, and the module itself is covered against material and manufacturing defects. This is a significant factor for investors planning PV farms with a long-term return-on-investment horizon. ### What is TOPCon technology and is it worth choosing panels built with it? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces recombination losses through an additional passivation layer on the rear side of the cell. In practice this results in higher efficiency, better performance under low and diffuse light conditions, and lower annual degradation compared to older PERC-based technologies. For investors, this means higher and more stable energy yield throughout the entire lifetime of the installation. ### Do Sunpro TOPCon 210R BIFACIAL panels perform well in high summer temperatures? Yes, this series features a favorable temperature coefficient, resulting in a smaller power drop at high operating temperatures compared to competing modules based on older technologies. This is especially important in summer, when cell temperature can significantly exceed STC conditions, and stable performance translates into higher real-world energy yield throughout the season. ### What type of installations are Sunpro TOPCon 210R BIFACIAL panels best suited for? Due to their high unit power, 210R format, and bifacial design, this series is primarily dedicated to solar farms and industrial or commercial sites where minimizing LCOE is the priority. High power density reduces the number of modules needed as well as mounting structure and cabling costs, which is especially significant for utility-scale installations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/topcon-spdgxxx-n132r12-620-635w-silver-frame-white-mesh-30mm-3e7ea51b533c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +1.7 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +45 W, cooler, +1.7 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +40 W, cooler, +1.5 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +1.5 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +1.3 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | Cooler, lighter, +1.3 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +1.3 pp | | [Sunpro Power SP600W-210R-132DS](https://comparepv.com/panel/sunpro-sp600w-210r-132ds) | 600 W | -35 W, cooler, -1.3 pp | | [Sunpro Power SP610W-210R-132DS](https://comparepv.com/panel/sunpro-sp610w-210r-132ds) | 610 W | -25 W, cooler, -0.9 pp | | [Sunpro Power SPDG620-N132R12](https://comparepv.com/panel/sunpro-spdg620-n132r12) | 620 W | -15 W, -0.6 pp | | [Sunpro Power SPDG625-N132R12](https://comparepv.com/panel/sunpro-spdg625-n132r12) | 625 W | -10 W, -0.4 pp | | [Sunpro Power SPDG630-N132R12](https://comparepv.com/panel/sunpro-spdg630-n132r12) | 630 W | Very close match | | [Sunpro Power SPDG640-BC132R12](https://comparepv.com/panel/sunpro-spdg640-bc132r12) | 640 W | Cooler, heavier | | [Sunpro Power SPDG645-BC132R12](https://comparepv.com/panel/sunpro-spdg645-bc132r12) | 645 W | Cooler, heavier, +0.4 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +65 W, cooler, +1.5 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +60 W, cooler, +1.4 pp | --- Source: https://comparepv.com/panel/sunpro-spdg635-n132r12 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.