--- title: "Gamko New Energy GKA132N-PRO 640W Solar Panel: Specs & Datasheet | ComparePV" description: "Gamko New Energy GKA132N-PRO 640W solar panel. Specs: 23.69% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gamko-new-energy-gka132n-pro-640w" image: "https://comparepv.com/og/panel/gamko-new-energy-gka132n-pro-640w.png" updated: 2026-09-11 --- # Gamko New Energy GKA132N-PRO 640W Space saver, weak in heat 1,085 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Gamko New Energy - **Model:** GKA132N-PRO 640W - **Series:** GKA132N-PRO - **Rated power:** 640 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1085 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 640 W | 620 W | Strong - top 9% | | | Module efficiency | 23.69% | 22.80% | Strong - top 5% | 612 | | Power density | 236.9 | 227.7 | Strong - top 4% | 553 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 1% | 8,846 | | Weight (kg) | 33.5 kg | 32.8 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.69% | 22.80% | Strong - top 5% | 612 | | Power density | 236.9 | 227.7 | Strong - top 4% | 553 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 1% | 8,846 | | Weight per kWp | 52.3 | 53.1 | Typical | 5,874 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **236.9 watts per square metre** - Top 4% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 553rd in the whole database. - **23.69% module efficiency** - Top 5% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 612th in the whole database. ### Watch out for - **-0.340 %/°C temperature coefficient** - Bottom 1% of the TOPCon 600-650 W segment, against a median of -0.290. Ranked 8,846th in the whole database. - **Best for:** Commercial and utility-scale. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 640 W - **Efficiency:** 23.69 % - **Voltage at Pmax (Vmp):** 41.90 V - **Current at Pmax (Imp):** 15.30 A - **Open-circuit voltage (Voc):** 50.11 V - **Short-circuit current (Isc):** 16.18 A ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 - **Bifacial:** yes ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 33.5 kg - **Area:** 2.70 m2 - **Power density:** 236.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 612 of 14129 | | Power density | 553 of 14129 | | Temperature coefficient | 8846 of 14129 | | Weight | 5874 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Up to 24.06% Efficiency - Best-in-Class Performance** - The peak module efficiency of 24.06% (650 Wp variant) matches the Jinko Solar Tiger Neo 66HL4M-BDX (24.06%) and surpasses both the Astronergy ASTRO N5 (23.3%) and the BYD AURO N NLBK-39 (23.25%). Even the entry-level variant in the series (630 Wp, 23.18%) exceeds the median efficiency of both direct competitors. - **30-Year Linear Power Output Warranty** - The manufacturer provides a 30-year linear power output warranty - the same coverage as the Jinko Tiger Neo and above the 25-year standard commonly offered by mid-tier manufacturers. The product workmanship warranty is 12 years. - **N-Type TOPCon Cell Technology with Bifacial Design** - N-type TOPCon cells exhibit lower light-induced degradation (LID) and superior high-temperature performance compared to P-type PERC. The bifacial construction enables additional energy yield from ground-reflected irradiance, typically delivering a 5-25% energy gain depending on the installation's albedo conditions. - **Mechanical Strength: 2,400 / 5,400 Pa Load Rating** - The GKA132N-PRO series datasheet (ENF Solar) confirms a wind load resistance of 2,400 Pa and a snow load resistance of 5,400 Pa - specifications well-suited for installations in Polish climatic zones subject to heavy snowfall and high wind exposure. - **Full EU Market Certification Package** - Modules carry IEC 61215, IEC 61730, CE-EMC, CE-LVD, RoHS, ISO 9001, and ISO 14001 certifications, enabling unrestricted placement on the European market and satisfying the requirements of the majority of PV installation insurers. ## Cons - **Not Listed on BNEF Tier 1 Solar Module Manufacturers** - Gamko New Energy does not appear on the BNEF Tier 1 Solar Module Manufacturers list (Q1 2026 edition), despite an annual production capacity of approximately 1.2 GW (2023), unlike all three peer comparables - Jinko Solar, Astronergy, and BYD. For projects requiring project finance or corporate due diligence audits, the absence of Tier 1 status may be a disqualifying factor or necessitate the procurement of additional manufacturer risk insurance. ## About this series The Gamko New Energy GKA132N-PRO series is designed for installations where maximizing energy yield per square meter is crucial - whether on rooftops or in large ground-mounted projects. The use of **N-type TOPCon cells** results in high efficiency and more stable performance over time, which helps to minimize the risk of disappointment with actual energy production after several seasons. The modules utilize a **multi-busbar design**, which improves current collection and enhances the aesthetic appearance of the installation, especially on modern roofs. In practice, the GKA132N-PRO stands out for its **good performance in low-light conditions** - even on cloudy days or during early morning and late afternoon hours - which is important in Polish conditions. The manufacturer also emphasizes **PID resistance**, which is the degradation caused by voltage, which is important for long strings and demanding configurations. The entire series also features **high weather resistance**, making it suitable for areas exposed to snow and wind. ## Notable figures - 23.7% module efficiency - 0.9pp better than the \*\*TOPCon 600-650W\*\* median of 22.8% - At 236.9 W/m² power density, this panel generates 9.2 W/m² more per unit area than \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - At -0.34%/°C, loses 0.05pp more power per degree than \*\*TOPCon 600-650W\*\* median (-0.29%/°C) - In the top 4% for efficiency among all TOPCon panels ## Questions ### What is the warranty on the Gamko New Energy GKA132N-PRO panels? The manufacturer offers a 12-year product warranty on GKA132N-PRO series modules, covering manufacturing defects and mechanical damage. In addition, a 30-year linear power warranty is provided - over this period, the manufacturer guarantees that the panel will not lose more power than stipulated by the applicable degradation standards. These are standard warranty terms for premium-class TOPCon modules, which feature enhanced resistance to long-term degradation. ### Is the Gamko New Energy GKA132N-PRO suitable for installation on a pitched roof in Poland? Yes, the GKA132N-PRO series is well suited for pitched roof installations. The modules withstand snow loads up to 5400 Pa and wind loads up to 2400 Pa, meeting the requirements of the Polish climate. Important note: the bifacial double-glass version weighs approximately 33.5 kg, so the load-bearing capacity of the roof structure should be verified prior to installation and appropriate mounting rails must be used. ### What does it mean that the GKA132N-PRO is a bifacial panel, and how much additional energy does it yield? Bifacial means the panel harvests light from both sides - the rear glass absorbs irradiance reflected from the roof surface, ground, or surrounding environment. In typical rooftop installations, the bifacial gain ranges from 3% to 10%, and can be higher when a white membrane or light-colored gravel is used. In ground-mounted systems with high-albedo surfaces, the gain can reach 15-20%. Under Polish conditions, the bifacial effect is moderate but consistent throughout the entire season. ### Does the N-type TOPCon technology in the GKA132N-PRO actually generate more power under overcast conditions? N-type TOPCon cells have a lower temperature coefficient and a better response to diffuse irradiance than older PERC modules. In practice, under overcast skies, in the early morning, and in the late afternoon, the GKA132N-PRO generates noticeably more energy than a comparable nominal-power PERC module. In the Polish climate, where variable solar irradiance is common throughout much of the year, this difference has a measurable impact on annual energy yield. ### What is the peak power output of the GKA132N-PRO module, and what types of projects is it intended for? The GKA132N-PRO module has a peak power of 650 Wp with an efficiency of approximately 24.6%. The 132-cell large-format configuration makes this series primarily suited for commercial and utility-scale ground-mounted installations where maximizing energy yield per unit area is critical. The modules are also applicable to large flat roofs on warehouses and industrial facilities where neither weight nor dimensions present a constraint. ### Are the GKA132N-PRO panels resistant to PID, and what does this mean for their service life? PID (Potential Induced Degradation) is a phenomenon in which high string voltage gradually degrades the cells and can reduce module power output by as much as several percent after only a few seasons. The GKA132N-PRO series is engineered with PID resistance, which is particularly important in long strings used with transformerless inverters and in commercial installations operating above 1000 V system voltage. This translates into more stable power output throughout the entire 30-year linear power warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/pro-132n-182x210mm-solar-cells-6cf0601e1cb3.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +1.5 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +1.5 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, lighter, +1.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +1.3 pp | | [WINAICO WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 W | +35 W, cooler, +1.3 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +1.1 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | Cooler, lighter, +1.1 pp | | [Gamko New Energy GKA132N-PRO 630W](https://comparepv.com/panel/gamko-new-energy-gka132n-pro-630w) | 630 W | -10 W, -0.5 pp | | [Gamko New Energy GKA132N-PRO 635W](https://comparepv.com/panel/gamko-new-energy-gka132n-pro-635w) | 635 W | Very close match | | [Gamko New Energy GKA132N-PRO 645W](https://comparepv.com/panel/gamko-new-energy-gka132n-pro-645w) | 645 W | Very close match | | [Gamko New Energy GKA132N-PRO 650W](https://comparepv.com/panel/gamko-new-energy-gka132n-pro-650w) | 650 W | +10 W, +0.4 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +60 W, cooler, +1.3 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +55 W, cooler, +1.2 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +30 W, cooler, +1.1 pp | --- Source: https://comparepv.com/panel/gamko-new-energy-gka132n-pro-640w Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.