--- title: "Gamko New Energy GKA210M108-545 Solar Panel: Specs & Datasheet | ComparePV" description: "Gamko New Energy GKA210M108-545 solar panel. Specs: 21.34% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gamko-new-energy-gka210m108-545" image: "https://comparepv.com/og/panel/gamko-new-energy-gka210m108-545.png" updated: 2026-09-11 --- # Gamko New Energy GKA210M108-545 Light for its output, no clear weak spot 709 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** Gamko New Energy - **Model:** GKA210M108-545 - **Series:** GKA210M108 - **Rated power:** 545 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 500-550 W (709 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 545 W | 535 W | Strong - top 12% | | | Module efficiency | 21.34% | 20.90% | Strong - top 3% | 8,539 | | Power density | 213.4 | 209.0 | Strong - top 3% | 8,496 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 23% | 8,846 | | Weight (kg) | 25.5 kg | 28.3 kg | Strong - top 3% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.34% | 20.90% | Strong - top 3% | 8,539 | | Power density | 213.4 | 209.0 | Strong - top 3% | 8,496 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 23% | 8,846 | | Weight per kWp | 46.8 | 53.0 | Strong - top 3% | 1,353 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **46.8 kg per kWp** - Top 3% of the PERC 500-550 W segment, against a median of 53.0. Ranked 1,353rd in the whole database. - **21.34% module efficiency** - Top 3% of the PERC 500-550 W segment, against a median of 20.90%. Ranked 8,539th in the whole database. - **213.4 watts per square metre** - Top 3% of the PERC 500-550 W segment, against a median of 209.0. Ranked 8,496th in the whole database. - **Best for:** Residential and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 545 W - **Efficiency:** 21.34 % - **Voltage at Pmax (Vmp):** 31.13 V - **Current at Pmax (Imp):** 17.51 A - **Open-circuit voltage (Voc):** 37.35 V - **Short-circuit current (Isc):** 18.39 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:** 108 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1960 mm - **Width:** 1303 mm - **Thickness:** 30 mm - **Weight:** 25.5 kg - **Area:** 2.55 m2 - **Power density:** 213.4 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 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 463 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8539 of 14129 | | Power density | 8496 of 14129 | | Temperature coefficient | 8846 of 14129 | | Weight | 1353 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Top-Tier Segment Efficiency - Up to 21.54%** - The highest-performing variant, GKA210M108, achieves a module efficiency of 21.54%, surpassing all three peer comparables: Goldi Solar GS10-B144-TF (21.3%), IBC Solar 182M Half Cell (21.28%), and S-Energy SL65-72BGJ (21.3%). The ~0.24 percentage-point advantage translates into meaningfully higher annual energy yield for the same rooftop area. - **Bifacial + MBB Half-Cut 210 mm** - The combination of bifacial cells with multi-busbar (MBB) technology and half-cut cell architecture reduces resistive losses by approximately 75% compared to full-cell designs. In residential prosumer installations with a light-colored substrate or roofing membrane, bifacial PERC modules generate 11-23% more energy annually than their monofacial counterparts of equivalent rated power. - **30-Year Linear Power Warranty** - The manufacturer guarantees linear degradation over 30 years, backed by IEC 61215 and IEC 61730 certifications. A 30-year linear warranty is on par with peer comparables, yet clearly superior to the offering of many Tier-2 manufacturers that provide only 25 years on a stepped degradation curve. - **Mechanical Durability: 5,400 Pa (Snow Load)** - The datasheet confirms a static snow load rating of 5,400 Pa and a wind load rating of 2,400 Pa. Under Polish structural design standards (Snow Load Zone III, up to approximately 2,000 Pa), the module delivers nearly three times the required safety margin-a significant advantage for pitched-roof installations prone to snow accumulation. - **IEC 61215 and IEC 61730 Certifications** - Holding both IEC certifications confirms compliance with the qualification requirements of Polish distributors, insurers, and the Mój Prąd subsidy program. IEC 61730 covers electrical safety assessment, simplifying the technical acceptance procedure conducted by distribution system operators. ## Cons - **PERC, Not N-Type - Higher LID** - P-type PERC cells exhibit light-induced degradation (LID) of up to 2% in the first year, whereas competing N-type TOPCon technology-increasingly prevalent in 530-550 W modules in 2025-2026-virtually eliminates LID. Over a 30-year system lifetime, this difference can amount to 2-4 MWh less per 10 kWp of installed capacity. - **No Confirmed BNEF Tier 1 Status** - Gamko New Energy (1.2 GW/year of manufacturing capacity as of 2023) does not appear in publicly available quarterly BNEF Tier 1 Solar Module Manufacturers reports. The absence of bankable manufacturer status may present an obstacle when seeking bank financing or leasing for commercial installations above 50 kWp, where financial institutions routinely require Tier 1 qualification. ## About this series Gamko GKA210M108 panels utilize technologically advanced, large-format 210 mm cells, which translate into significantly higher efficiency while maintaining optimal dimensions tailored to Polish single-family housing. This series stands out through the use of **Half-Cut cell technology**, which effectively minimizes energy losses resulting from local shading and drastically reduces the risk of harmful hot-spots. Thanks to the thoughtful 108-cell design, these modules solve the problem of limited installation space on pitched roofs, offering an impressive power density that realistically accelerates the return on the entire investment. The applied **multi-busbar (MBB) technology** shortens the current flow path, which not only increases overall efficiency but also enhances the panel's mechanical resistance to micro-cracks in difficult weather conditions. This solution is dedicated to modern investors seeking a middle ground between innovation and long-term durability, especially in demanding prosumer installations. Gamko GKA210M108 distinguishes itself from market competitors with an **exceptionally favorable temperature coefficient**, ensuring stable energy production even during record heatwaves. A solidly reinforced frame and tempered glass with an anti-reflective structure guarantee **excellent resistance to extreme snow loads and strong wind gusts**, making these modules a safe and effective choice for decades. ## Notable figures - At 21.3% efficiency, this panel is on par with typical \*\*PERC 500-550W\*\* modules - At 213.4 W/m² power density, this panel generates 4.4 W/m² more per unit area than \*\*PERC 500-550W\*\* median (209.0 W/m²) - Temperature coefficient of -0.34%/°C matches the \*\*PERC 500-550W\*\* median - Weight of 25.5 kg (2.8 kg below \*\*PERC 500-550W\*\* median of 28.3 kg) allows easier transport and roof mounting - Ranked #8539 out of 14129 panels for efficiency in the database ## Questions ### Are the Gamko GKA210M108 panels still available for purchase? The Gamko GKA210M108 series has been discontinued and is no longer actively offered by distributors. Isolated units may occasionally surface from warehouse stock, but availability is extremely limited. If you are looking for currently manufactured modules with similar specifications (210 mm cells, half-cut, approximately 550 Wp), it is worth checking newer series from this manufacturer or comparable offerings from competing brands. ### What warranty coverage applies to the Gamko GKA210M108 panels? Gamko provides a 12-year product warranty on the GKA210M108 series, covering material defects and manufacturing faults. In addition, a 30-year linear power output warranty applies, guaranteeing that the module retains a specified percentage of its nominal efficiency over three decades of operation. This represents the standard warranty level for premium-class modules in this power range. ### Is the Gamko GKA210M108 a bifacial panel, and what does that mean for my installation? Yes, the GKA210M108 is a bifacial module. The rear side of the panel absorbs light reflected from the underlying surface - such as a white roofing membrane, sand, or snow - generating additional energy that can reach several to over ten percent above the nominal 550 Wp rating. The bifacial gain depends on the albedo of the mounting surface and the tilt angle, which is why the effect is more pronounced in ground-mounted systems than on tile-covered rooftops. ### What does half-cut cell technology mean in the Gamko GKA210M108, and why does it matter? Half-cut technology involves laser-cutting each PERC cell in half, so the GKA210M108 module contains 108 half-cut cells instead of the conventional 54 full cells. This reduces resistive losses and, importantly for conditions common in Poland, significantly improves tolerance to partial shading - for example from chimneys or dormer windows. A shaded section of the roof does not shut down the output of the entire module. ### What is the peak power output of the Gamko GKA210M108, and is it a competitive figure? The peak power output of the GKA210M108 series is 550 Wp. This figure is characteristic of large-format modules based on 210 mm cells and positions the panel firmly in the high-power segment, typical for both prosumer and commercial installations. The higher per-panel wattage means fewer modules are required for a given roof area, reducing balance-of-system (BoS) costs - including mounting hardware and cabling - on a per-kilowatt-installed basis. ### Do the Gamko GKA210M108 panels perform well in the Polish climate, where heavy snow loads and hard frosts are common? Yes, the GKA210M108 series was engineered for demanding environmental conditions. The reinforced aluminum frame and tempered anti-reflective glass provide high resistance to heavy snow loads and strong wind gusts. The favorable temperature coefficient characteristic of PERC technology ensures that the module maintains relatively stable energy production both during hard frosts and the summer heat spikes typical of the Polish climate. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/7-1357f2d9a24b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | -35 W, cooler, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | -50 W, cooler, +3.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +15 W, cooler, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | -40 W, cooler, +3.4 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | -40 W, cooler, +3.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +10 W, cooler, +3.3 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | -45 W, cooler, +3.2 pp | | [Gamko New Energy GKA210M108-530W](https://comparepv.com/panel/gamko-new-energy-gka210m108-530w) | 530 W | -15 W, -0.6 pp | | [Gamko New Energy GKA210M108-535W](https://comparepv.com/panel/gamko-new-energy-gka210m108-535w) | 535 W | -10 W, -0.4 pp | | [Gamko New Energy GKA210M108-540W](https://comparepv.com/panel/gamko-new-energy-gka210m108-540w) | 540 W | Very close match | | [Gamko New Energy GKA210M108-550W](https://comparepv.com/panel/gamko-new-energy-gka210m108-550w) | 550 W | Very close match | | [Jetion JT590SJk(B)](https://comparepv.com/panel/jetion-jt590sjk-b) | 590 W | Cooler, heavier, +1.8 pp | | [Resun Solar RS9V-M-DG-590](https://comparepv.com/panel/resun-solar-rs9v-m-dg-590) | 590 W | +45 W, heavier, +1.7 pp | | [Jetion JT585SJk(B)](https://comparepv.com/panel/jetion-jt585sjk-b) | 585 W | Cooler, heavier, +1.6 pp | | [Resun Solar RS9V-M-DG-585](https://comparepv.com/panel/resun-solar-rs9v-m-dg-585) | 585 W | Cooler, heavier, +1.5 pp | | [Gamko New Energy GKA210N108-580W](https://comparepv.com/panel/gamko-new-energy-gka210n108-580w) | 580 W | +35 W, +1.4 pp | --- Source: https://comparepv.com/panel/gamko-new-energy-gka210m108-545 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.