--- title: "Gamko New Energy GKA210M120-590W 590W Solar Panel - Specs & Review | ComparePV" description: "Gamko New Energy GKA210M120-590W 590W solar panel. Specs: 20.85% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gamko-new-energy-gka210m120-590w" updated: 2026-09-11 --- # Gamko New Energy GKA210M120-590W Light for its output, needs the roof space 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Gamko New Energy - **Model:** GKA210M120-590W - **Series:** GKA210M120 (590W–610W) - **Rated power:** 590 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 590 W | 560 W | Strong - top 17% | | | Module efficiency | 20.85% | 21.29% | Weak - bottom 17% | 10,362 | | Power density | 208.5 | 212.9 | Weak - bottom 15% | 10,359 | | Temperature coefficient | -0.340 | -0.350 | Typical | 8,778 | | Weight (kg) | 28.0 kg | 30.8 kg | Strong - top 3% | | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.85% | 21.29% | Weak - bottom 17% | 10,362 | | Power density | 208.5 | 212.9 | Weak - bottom 15% | 10,359 | | Temperature coefficient | -0.340 | -0.350 | Typical | 8,778 | | Weight per kWp | 47.5 | 52.7 | Strong - top 3% | 1,689 | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Strengths - **47.5 kg per kWp** - Top 3% of the PERC 550-600 W segment, against a median of 52.7. Ranked 1,689th in the whole database. - **30 year performance warranty** - Top 25% of the PERC 550-600 W segment, against a median of 27 yrs. ### Watch out for - **208.5 watts per square metre** - Bottom 15% of the PERC 550-600 W segment, against a median of 212.9. - **20.85% module efficiency** - Bottom 17% of the PERC 550-600 W segment, against a median of 21.29%. - **Best for:** Residential, commercial, utility-scale and shaded-installations. - **Not ideal for:** Roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 590 W - **Efficiency:** 20.85 % - **Voltage at Pmax (Vmp):** 34.37 V - **Current at Pmax (Imp):** 17.17 A - **Open-circuit voltage (Voc):** 41.34 V - **Short-circuit current (Isc):** 18.42 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:** PERC - **Cell count:** 120 - **Bifacial:** yes ### Physical - **Length:** 2172 mm - **Width:** 1303 mm - **Thickness:** 30 mm - **Weight:** 28.0 kg - **Area:** 2.83 m2 - **Power density:** 208.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Output after 30 years:** 500 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10362 of 14005 | | Power density | 10359 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 1689 of 14005 | | Warranty | 21 of 14005 | ## Pros - **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. ## Cons - **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. ## About this series 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. ## Notable figures - At 20.9% efficiency, this panel is on par with typical \*\*PERC 550-600W\*\* modules - At 208.5 W/m², this panel generates 4.4 W/m² less per unit area than \*\*PERC 550-600W\*\* median (212.9 W/m²) - Temperature coefficient of -0.34%/°C matches the \*\*PERC 550-600W\*\* median - At 28.0 kg, this panel is 2.8 kg lighter than \*\*PERC 550-600W\*\* median (30.8 kg) - easier handling during installation - Ranked #10362 out of 14005 panels for efficiency in the database ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/GKA210M120-590-610W-c66712c8a0f5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | -30 W, cooler, +3.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +50 W, cooler, +3.9 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | -35 W, cooler, +3.8 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +45 W, cooler, +3.8 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | Cooler, heavier, +3.5 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, lighter, +3.5 pp | | [Gamko New Energy GKA210M120-595W](https://comparepv.com/panel/gamko-new-energy-gka210m120-595w) | 595 W | Very close match | | [Gamko New Energy GKA210M120-600W](https://comparepv.com/panel/gamko-new-energy-gka210m120-600w) | 600 W | +10 W, +0.3 pp | | [Gamko New Energy GKA210M120-605W](https://comparepv.com/panel/gamko-new-energy-gka210m120-605w) | 605 W | +15 W, +0.5 pp | | [Gamko New Energy GKA210M120-610W](https://comparepv.com/panel/gamko-new-energy-gka210m120-610w) | 610 W | +20 W, +0.7 pp | | [Gamko New Energy GKA210N120](https://comparepv.com/panel/gamko-new-energy-gka210n120) | 680 W | +90 W, +3.2 pp | | [Gamko New Energy GKA210N120-675](https://comparepv.com/panel/gamko-new-energy-gka210n120-675) | 675 W | +85 W, +3.0 pp | | [Q-SUN Solar QN-670HJT-01](https://comparepv.com/panel/q-sun-solar-qn-670hjt-01) | 670 W | +80 W, cooler, +2.8 pp | | [Gamko New Energy GKA210N120-670](https://comparepv.com/panel/gamko-new-energy-gka210n120-670) | 670 W | +80 W, +2.8 pp | | [Q-SUN Solar QN-665HJT-01](https://comparepv.com/panel/q-sun-solar-qn-665hjt-01) | 665 W | +75 W, cooler, +2.6 pp | | [Gamko New Energy GKA210N120-665](https://comparepv.com/panel/gamko-new-energy-gka210n120-665) | 665 W | +75 W, +2.6 pp | --- Source: https://comparepv.com/panel/gamko-new-energy-gka210m120-590w Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.