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Gamko New Energy GKA210M120-605W
Gamko New Energy Brand review

GKA210M120-605W

605 Wp PERC Bifacial
ComparePV verdict

Light for its output, no clear weak spot

Rank 4,784 of 14,005
Compare panels Datasheet PDF
Power (Wp)
605
Typical for its class
Efficiency (%)
21.38
Typical · median 21.38%
Density (Wp/m²)
213.8
Typical · median 213.8
Temp (%/°C)
-0.340
Typical · median -0.340
Weight (kg)
28.0
Strong · 6.0 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The Gamko New Energy GKA210M120 (590W-610W) series consists of modules based on monocrystalline PERC cells in half-cut configurations, designed for high energy yield with limited mounting area. The use of large-format cells and a half-cut structure helps minimize energy losses due to current flow, resulting in more stable operation of the system in real-world conditions. In addition, the series offers excellent high-temperature resistance and a robust, industrial design with tempered glass and a sealed junction box, which is important in the Polish climate.

This is a good choice for investors who want to maximize power on rooftops or on the ground - from single-family homes to commercial and agricultural projects. The series stands out for its high power density, PERC technology in a half-cut format, and long-term linear energy yield warranty, which makes it easier to plan profitability and reduces operational risks.

Ranking

217 panels in the segment PERC 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.38% 21.38% Typical 8,423
Power density 213.8 213.8 Typical 8,350
Temperature coefficient -0.340 -0.340 Typical 8,778
Weight per kWp 46.3 55.7 Strong · top 1% 1,095
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 3 caution
Best for

Residential, commercial, utility-scale and shaded-installations.

Strengths
46.3 kg per kWp

Top 1% of the PERC 600-650 W segment, against a median of 55.7. Ranked 1,095th in the whole database.

What owners get
Bifacial Design Boosts Energy Yield

The module employs bifacial technology (dual-sided PERC cells), which under favorable albedo conditions (light-colored ground, white gravel, snow) delivers additional yield in the range of 5–15% compared to a monofacial equivalent. This is a significant advantage for ground-mounted installations and agrivoltaic applications.

Efficiency on Par with Segment Leaders

The top variant in the series achieves 21.55% module efficiency — identical to the Seraphim Seco 595–610W and Techwise Summit Series, and only marginally below the GCL GCL-M12/60GDF (21.6%). The series therefore ranks among the top competitors in the comparable 600W PERC module category available on the market.

30-Year Linear Power Output Warranty

The manufacturer provides a 30-year linear power output warranty, which exceeds the 25-year standard offered by a portion of mid-tier competitors and facilitates LCOE modeling for projects with long investment horizons.

Half-Cut 210mm Cells – Low Resistive Losses

The configuration of 120 half-cut cells in the 210mm format (M10+) shortens the current path, reducing resistive losses and lowering susceptibility to partial shading compared to conventional 60/72-cell layouts. The large cell format enables 610 Wp output within a compact module footprint.

IEC 61215 and IEC 61730 Certified

The series holds certification for compliance with IEC 61215 (mechanical and electrical performance) and IEC 61730 (safety), which is a prerequisite for most public tenders and subsidy programs in Poland and across the EU.

Trade-offs
PERC Rather Than N-Type TOPCon

By 2025/2026, TOPCon (N-type) technology has become the new market standard — offering a lower LID degradation rate, a better temperature coefficient of power (~−0.30%/°C vs. ~−0.35%/°C for PERC), and meaningfully higher annual energy yield. While Gamko offers TOPCon in its own GKA210N132 series, the GKA210M120 remains based on PERC technology, which is gradually losing its cost-to-performance edge.

Manufacturer Not Listed in BNEF Tier 1

Gamko New Energy (approximately 1.2 GW of annual production capacity as of 2023) does not appear on the BNEF Tier 1 lists for Q1 2025 or Q1 2026, which are dominated by JA Solar, Trina Solar, LONGi, and Canadian Solar (each exceeding 80 GW/year). The absence of Tier-1 status may complicate access to project finance for larger commercial and utility-scale projects.

12-Year Product Warranty vs. 15 Years from Market Leaders

Leading Tier-1 manufacturers (Trina Solar, JA Solar, LONGi, Canadian Solar) standardly offer a 15-year product warranty against manufacturing defects. Gamko provides only 12 years — a 3-year gap that shifts earlier servicing cost risk to the investor.

Notes from the database
  • At 21.4% efficiency, this panel is on par with typical PERC 600-650W modules
  • At 213.8 W/m² power density, roof space requirements are typical for PERC 600-650W panels
  • At -0.34%/°C, hot weather performance is typical for PERC 600-650W panels
  • At 28.0 kg, this panel is 6.0 kg lighter than PERC 600-650W median (34.0 kg) - easier handling during installation
  • In the top 60% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 605 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.38 % Typical Segment median 21.38%
Vmpp · Impp 34.91 V · 17.33 A Operating point at max power
Voc · Isc 41.87 V · 18.58 A Sizes the string length
Dimensions 2172×1303×30 mm · 2.83 m² of roof
Weight 28.0 kg Strong Strong · 6.0 kg below median
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.340 %/°C Typical median -0.340 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
End-of-warranty output 84.8 % Equals 513 W guaranteed
Degradation 2.00 % First year

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 -0.340
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Gamko New Energy GKA210M120-605W 605 W 21.38% -0.340 28.0 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +45 W, cooler, +3.8 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +40 W, cooler, +3.6 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg -45 W, cooler, +3.4 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +35 W, cooler, +3.4 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg -50 W, cooler, +3.2 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +30 W, cooler, +3.2 pp
GKA210M120-590W 590 W 20.85% -0.340 28.0 kg -15 W, -0.5 pp
GKA210M120-595W 595 W 21.02% -0.340 28.0 kg -10 W, -0.4 pp
GKA210M120-600W 600 W 21.20% -0.340 28.0 kg Very close match
GKA210M120-610W 610 W 21.55% -0.340 28.0 kg Very close match
GKA210N120 680 W 24.03% -0.340 28.0 kg +75 W, +2.7 pp
GKA210N120-675 675 W 23.85% -0.340 28.0 kg +70 W, +2.5 pp
QN-670HJT-01 670 W 23.70% -0.240 35.5 kg Cooler, heavier, +2.3 pp
GKA210N120-670 670 W 23.67% -0.340 28.0 kg +65 W, +2.3 pp
QN-665HJT-01 665 W 23.50% -0.240 35.5 kg Cooler, heavier, +2.1 pp
GKA210N120-665 665 W 23.50% -0.340 28.0 kg +60 W, +2.1 pp

Found 497 panels of the same or similar size to this one, within ±10 mm. See them here Found 502 panels of the same or similar size to this one, within ±25 mm. See them here Found 502 panels of the same or similar size to this one, within ±50 mm. See them here Found 506 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty is provided for the Gamko New Energy GKA210M120 panels?
The GKA210M120 series comes with a 12-year product warranty covering material and manufacturing defects, as well as a 30-year linear power output warranty. Such an extended power warranty allows system owners to plan installation economics well in advance and significantly reduces the risk of unexpected energy production degradation over several decades of operation.
Is the Gamko GKA210M120 series truly a bifacial panel?
Yes, the GKA210M120 series consists of bifacial modules — they generate energy from both the direct irradiance striking the front surface and the albedo irradiance reflected from the ground reaching the rear surface. In ground-mounted installations over light-colored substrates or gravel ballast, this can increase annual energy yield by several percent compared to a standard monofacial module.
Will the Gamko GKA210M120 590W–610W panels perform well in the Polish climate?
Yes. The GKA210M120 series modules feature tempered glass and a sealed junction box that protect against moisture and the variable weather conditions typical of Poland. The structure withstands snow loads up to 5400 Pa and wind loads up to 2400 Pa, meeting the requirements of the vast majority of Polish installation sites. The strong thermal performance of the PERC cells also minimizes power losses on hot days.
What is the PERC half-cut technology used in the Gamko GKA210M120 series and why is it worth choosing?
PERC (Passivated Emitter and Rear Cell) is a monocrystalline technology featuring an additional passivation layer on the rear side of the cell, which increases light-to-electricity conversion efficiency. Half-cut means each cell is laser-cut in half — this reduces internal resistance and improves module performance under partial shading conditions, such as from a chimney or antenna. Together, both technologies deliver more stable energy yield and lower real-world losses.
What types of installations is the Gamko New Energy GKA210M120 series suited for, and will it work in ground-mounted systems?
With a peak power output of up to 610 Wp and high power density, the GKA210M120 series is well suited for residential rooftops as well as commercial and agricultural projects. The bifacial design makes the modules particularly effective in ground-mounted installations with light-colored substrates or gravel underlayment, where the rear surface of the panel can capture reflected solar irradiance and contribute to additional energy generation.
What certifications do the Gamko GKA210M120 panels hold, and can they be installed in Poland without restrictions?
The GKA210M120 series modules are certified to IEC 61215 and IEC 61730, confirming electrical safety and mechanical durability. The manufacturer also declares compliance with the CE marking requirements as well as salt mist and ammonia resistance standards — relevant for installations near coastlines or livestock facilities. Holding these certifications facilitates access to funding under Polish renewable energy support programs.
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