Light for its output, no clear weak spot
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
Signals from the data
Residential, commercial, utility-scale and shaded-installations.
Top 1% of the PERC 600-650 W segment, against a median of 55.7. Ranked 911th in the whole database.
Top 22% of the PERC 600-650 W segment, against a median of 213.8.
Top 25% of the PERC 600-650 W segment, against a median of 21.38%.
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.
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.
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.
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.
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.
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.
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.
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.
- Efficiency of 21.6% matches the PERC 600-650W median
- At 215.5 W/m² power density, roof space requirements are typical for PERC 600-650W panels
- Temperature coefficient of -0.34%/°C matches the PERC 600-650W median
- 28.0 kg weight - 6.0 kg lighter than PERC 600-650W median (34.0 kg), reducing installation effort
- Ranked #7784 out of 14005 panels for efficiency in the database
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Alternatives
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