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Gamko New Energy Brand review

GKA132N-PRO 645W

645 Wp TOPCon Bifacial
ComparePV verdict

Space saver, weak in heat

Rank 1,372 of 14,129
Compare panels Datasheet PDF
Power (Wp)
645
Strong · top 3%
Efficiency (%)
23.88
Strong · top 2%
Density (Wp/m²)
238.8
Strong · top 1%
Temp (%/°C)
-0.340
Weak · bottom 1%
Weight (kg)
33.5
Typical · median 32.8 kg
Warranty (yrs)
30
Typical · median 30 yrs

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.

Ranking

1,085 panels in the segment TOPCon 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.88% 22.80% Strong · top 2% 421
Power density 238.8 227.7 Strong · top 1% 383
Temperature coefficient -0.340 -0.290 Weak · bottom 1% 8,846
Weight per kWp 51.9 53.1 Typical 5,393
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 2 caution
Best for

Commercial and utility-scale.

Not ideal for

Hot climates.

Strengths
238.8 watts per square metre

Top 1% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 383rd in the whole database.

23.88% module efficiency

Top 2% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 421st in the whole database.

Watch-outs
-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.

What owners get
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.

Trade-offs
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.

Notes from the database
  • 23.9% module efficiency - 1.1pp better than the TOPCon 600-650W median of 22.8%
  • At 238.8 W/m² power density, this panel generates 11.1 W/m² more per unit area than TOPCon 600-650W median (227.7 W/m²)
  • -0.34%/°C temperature coefficient - 0.05pp worse than TOPCon 600-650W median (-0.29%/°C), expect higher hot weather losses
  • In the top 3% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 645 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.88 % Strong Segment median 22.80%
Vmpp · Impp 42.10 V · 15.35 A Operating point at max power
Voc · Isc 50.31 V · 16.23 A Sizes the string length
Dimensions 2382×1134×30 mm · 2.70 m² of roof
Weight 33.5 kg Typical Typical · median 32.8 kg
Cells 132 · TOPCon Monocrystalline
Coefficient Pmax -0.340 %/°C Weak bottom 1% of its segment
Coefficient Voc · Isc -0.250 · 0.040 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs

Datasheet charts

Open datasheet PDF

Measured curves published by Gamko New Energy 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.

I-V Curves at Different Irradiance Levels (Cell Temp = 25°C) I-V Curves at Different Irradiance Levels (Cell Temp = 25°C) Whole series I-V Curves at Different Cell Temperatures (1000 W/m²) I-V Curves at Different Cell Temperatures (1000 W/m²) 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
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.340 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Gamko New Energy GKA132N-PRO 645W 645 W 23.88% -0.340 33.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +1.3 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +1.3 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +1.1 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +1.1 pp
WST-675BKX72-A2 675 W 25.00% -0.260 32.1 kg +30 W, cooler, +1.1 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +50 W, cooler, +1.0 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +0.9 pp
GKA132N-PRO 630W 630 W 23.18% -0.340 33.5 kg -15 W, -0.7 pp
GKA132N-PRO 635W 635 W 23.51% -0.340 33.5 kg -10 W, -0.4 pp
GKA132N-PRO 640W 640 W 23.69% -0.340 33.5 kg Very close match
GKA132N-PRO 650W 650 W 24.06% -0.340 33.5 kg Very close match
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +55 W, cooler, +1.1 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg Cooler, lighter, +0.9 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +25 W, cooler, +0.9 pp

Found 1144 panels of the same or similar size to this one, within ±10 mm. See them here Found 1150 panels of the same or similar size to this one, within ±25 mm. See them here Found 1261 panels of the same or similar size to this one, within ±50 mm. See them here Found 1942 panels of the same or similar size to this one, within ±100 mm. See them here

About the GKA132N-PRO series

6 answered

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

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.
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