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Gamko New Energy GKA157M72-390
Gamko New Energy Brand review

GKA157M72-390

390 Wp PERC
ComparePV verdict

Warranty pick, no clear weak spot

Rank 12,096 of 14,129
Compare panels Datasheet PDF
Power (Wp)
390
Typical for its class
Efficiency (%)
20.10
Typical · median 19.90%
Density (Wp/m²)
201.0
Typical · median 199.0
Temp (%/°C)
-0.360
Typical · median -0.350
Weight (kg)
21.0
Typical · median 21.4 kg
Warranty (yrs)
30
Strong · top 13%

The Gamko New Energy GKA157M72 series is designed for maximum energy yield on typical roofs and in smaller ground-mounted installations, where efficient use of space is crucial. The use of monocrystalline PERC cells helps ensure stable performance even in less ideal conditions, while the MBB (multi-busbar) design supports better current flow and reduced sensitivity to microcracks, resulting in predictable production over the long term.

In practice, this series solves a common problem for investors: how to increase yield without complicating the project. The modules have an anti-reflective coating on the tempered glass, which allows them to better utilize diffuse light, typical for the Polish climate. Furthermore, the manufacturer highlights PID resistance, which is important for longer strings and higher voltage systems.

GKA157M72 is a good choice for homes, businesses, PV farms, and renovation projects, where compatibility, durability, and a reasonable balance between efficiency and cost are important.

Ranking

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.10% 19.90% Typical 12,187
Power density 201.0 199.0 Typical 12,201
Temperature coefficient -0.360 -0.350 Typical 12,425
Weight per kWp 53.8 55.8 Typical 7,974
Performance warranty 30 yrs 25 yrs Strong · top 13% 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 3 caution
Best for

Residential and commercial.

Strengths
30 year performance warranty

Top 13% of the PERC 350-400 W segment, against a median of 25 yrs.

What owners get
30-Year Power Output Warranty

The manufacturer guarantees module performance for 30 years, placing the series in the premium class and exceeding the shorter warranty periods offered by some low-cost segment manufacturers. For the investor, this represents a contract for predictable energy yield over the full lifecycle of the installation.

Multi-Busbar PERC with PID Resistance

The Multi-Busbar (MBB) design reduces series resistance and limits sensitivity to cell micro-cracks, while the confirmed resistance to PID (Potential Induced Degradation) is particularly relevant at system voltages above 1000 V and in longer strings typical of industrial installations and utility-scale PV farms.

IEC 61215 and IEC 61730 Certifications

The series holds IEC 61215 (verification of electrical and mechanical parameters) and IEC 61730 (operational safety) certifications, enabling grid-tied installation within the EU and satisfying the requirements of most insurers and financing institutions.

High Mechanical Load Resistance

The modules withstand wind loads of up to 2400 Pa and snow loads of up to 5400 Pa, meeting the requirements for Wind Zone III and Snow Zone II per PN-EN 1991 - parameters that cover the vast majority of installation sites across Poland.

Efficiency Up to 21.13% Within the PERC Class

The upper efficiency limit of 21.13% (410 Wp model) is competitive against peer VDS Renewable VDS-S144/FNH (20.4%) and comparable to the Sunket SKT410~430M10 (21.0%), indicating a well-optimized cell technology within the monocrystalline PERC segment.

Trade-offs
No BNEF Tier 1 Status

Gamko New Energy does not appear on the published BNEF Tier 1 Q1 2026 lists. In projects requiring project finance or EPC insurance guarantees, the absence of Tier 1 status may result in module rejection by lending institutions or a requirement for additional collateral, increasing overall project costs.

12-Year Product Warranty

The manufacturer offers a 12-year product warranty (workmanship), while leading Tier 1 manufacturers - JA Solar, Jinko Solar, and Trina Solar - standardly guarantee 15 years. The 3-year difference may be material in TCO calculations for commercial projects and institutional tenders.

PERC vs. Newer N-Type Technologies

Peer comparable Luxor Solar Eco Line N-type TOPCon achieves 21.33% efficiency at the same power class (up to 410 Wp) and offers a lower LID degradation rate than the P-type PERC cells used in the GKA157M72. Over a 30-year operating horizon, this technological gap may translate into measurable losses in energy yield.

Notes from the database
  • 20.1% module efficiency - 0.7pp better than the PERC 0-400W median of 19.4%
  • At 201.0 W/m² power density, this panel generates 6.8 W/m² more per unit area than PERC 0-400W median (194.2 W/m²)
  • Temperature coefficient of -0.36%/°C matches the PERC 0-400W median
  • Ranked #12187 out of 14129 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 390 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.10 % Typical Segment median 19.90%
Vmpp · Impp 41.10 V · 9.49 A Operating point at max power
Voc · Isc 50.10 V · 9.92 A Sizes the string length
Dimensions 1956×992×30 mm · 1.94 m² of roof
Weight 21.0 kg Typical Typical · median 21.4 kg
Cells 72 · PERC Monocrystalline
Coefficient Pmax -0.360 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.280 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Strong top 13% · median 25 yrs
End-of-warranty output 82.6 % Equals 322 W guaranteed
Degradation 3.00 → 0.50 % First year, then annual

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
-0.360 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Gamko New Energy GKA157M72-390 390 W 20.10% -0.360 21.0 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +50 W, cooler, +3.0 pp
GKA210M340W 340 W 23.00% - 16.2 kg -50 W, lighter, +2.9 pp
GKA210M360W 360 W 23.00% - 16.2 kg -30 W, lighter, +2.9 pp
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg -10 W, lighter, +2.9 pp
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +10 W, lighter, +2.9 pp
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg +10 W, lighter, +2.9 pp
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg -10 W, lighter, +2.9 pp
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +50 W, cooler, +2.8 pp
GKA157M72-395W 395 W 20.36% -0.360 21.0 kg +0.3 pp
GKA157M72-400W 400 W 20.61% -0.360 21.0 kg +10 W, +0.5 pp
GKA157M72-405W 405 W 20.87% -0.360 21.0 kg +15 W, +0.8 pp
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg Cooler, +3.9 pp, +10 yr warranty
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg Cooler, +3.6 pp, +10 yr warranty
SPR-MAX7-465 465 W 23.50% -0.270 21.1 kg Cooler, +3.4 pp, +10 yr warranty
SPR-MAX6-440 440 W 22.80% -0.290 20.9 kg Cooler, +2.7 pp, +10 yr warranty
SPR-MAX6-435 435 W 22.50% -0.290 20.9 kg Cooler, +2.4 pp, +10 yr warranty

Found 148 panels of the same or similar size to this one, within ±10 mm. See them here Found 241 panels of the same or similar size to this one, within ±25 mm. See them here Found 360 panels of the same or similar size to this one, within ±50 mm. See them here Found 565 panels of the same or similar size to this one, within ±100 mm. See them here

About the GKA157M72 series

6 answered

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

What is the maximum power output of the Gamko New Energy GKA157M72 panel?
The GKA157M72 series covers modules ranging from 390 to 410 Wp, with the top-tier variant achieving 410 Wp under Standard Test Conditions (STC). This is a strong result for a module based on monocrystalline PERC cells, making the series competitive in both residential installations and smaller utility-scale PV plants where efficient use of available roof or ground area is a priority.
What warranty terms apply to the Gamko New Energy GKA157M72 series?
The manufacturer provides a 12-year product warranty covering manufacturing defects and mechanical damage to the module. A separate 30-year linear power output warranty guarantees a minimum energy yield over three decades of operation. Both warranty tiers align with the industry standard for PERC modules in this price segment.
Do the GKA157M72 panels perform well on overcast days typical of the Polish climate?
Yes, the GKA157M72 series handles diffuse light conditions effectively. Tempered glass with an anti-reflective coating enhances light absorption even under cloudy skies, and monocrystalline PERC cells deliver higher efficiency at low irradiance levels compared to older polycrystalline technology. For Polish conditions, where clear sunny days are relatively limited, this is a meaningful practical advantage.
What is MBB technology in the GKA157M72 modules and why does it matter for long-term durability?
MBB, or multi-busbar, is a cell architecture that uses multiple thin busbars instead of a few wider ones. In the GKA157M72 series, this shortens the current path within each cell, reducing resistive losses and lowering mechanical stress on the cell substrate. The practical outcome is improved resistance to microcracks during transportation and installation, as well as a reduced risk of power degradation over the long-term service life of the module.
Can the GKA157M72 modules withstand high wind loads and heavy snow accumulation?
Yes, the GKA157M72 series is certified for a wind load of up to 2400 Pa and a snow load of up to 5400 Pa, which is sufficient for demanding climatic conditions found across Central Europe. The modules carry IEC 61215 and IEC 61730 certifications, confirming mechanical durability and electrical safety in accordance with international standards.
Is the GKA157M72 a bifacial panel, or does it only collect energy from one side?
The GKA157M72 is a monofacial module - it generates energy exclusively from the front side and does not leverage ground albedo. This translates into simpler system design, a lower purchase cost, and no special requirements regarding the surface beneath the array. In ground-mounted installations with a highly reflective substrate, a bifacial module would achieve a higher annual energy yield; however, the GKA157M72 offsets this with a competitive price-to-power ratio and proven PERC technology.
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