--- title: "Gamko New Energy GKA210M120-590 Solar Panel: Specs & Datasheet | ComparePV" description: "Gamko New Energy GKA210M120-590 solar panel. Specs: 20.85% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gamko-new-energy-gka210m120-590" image: "https://comparepv.com/og/panel/gamko-new-energy-gka210m120-590.png" updated: 2026-09-11 --- # Gamko New Energy GKA210M120-590 Light for its output, modest efficiency 1,022 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Gamko New Energy - **Model:** GKA210M120-590 - **Series:** GKA210M120 - **Rated power:** 590 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 550-600 W (1022 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 590 W | 580 W | Strong - top 18% | | | Module efficiency | 20.85% | 22.44% | Weak - bottom 2% | 10,438 | | Power density | 208.5 | 224.4 | Weak - bottom 2% | 10,435 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 5% | 8,846 | | Weight (kg) | 28.0 kg | 31.2 kg | Strong - top 17% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.85% | 22.44% | Weak - bottom 2% | 10,438 | | Power density | 208.5 | 224.4 | Weak - bottom 2% | 10,435 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 5% | 8,846 | | Weight per kWp | 47.5 | 53.8 | Strong - top 17% | 1,689 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **47.5 kg per kWp** - Top 17% of the TOPCon 550-600 W segment, against a median of 53.8. ### Watch out for - **20.85% module efficiency** - Bottom 2% of the TOPCon 550-600 W segment, against a median of 22.44%. Ranked 10,438th in the whole database. - **208.5 watts per square metre** - Bottom 2% of the TOPCon 550-600 W segment, against a median of 224.4. Ranked 10,435th in the whole database. - **-0.340 %/°C temperature coefficient** - Bottom 5% of the TOPCon 550-600 W segment, against a median of -0.290. Ranked 8,846th in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and hot climates. ## 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:** TOPCon - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### 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 % - **Annual degradation:** 0.46 % - **Output after 30 years:** 499 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10438 of 14129 | | Power density | 10435 of 14129 | | Temperature coefficient | 8846 of 14129 | | Weight | 1689 of 14129 | | Warranty | 21 of 14129 | ## Pros - **210 mm Cells + Multi-Busbar + Half-Cut** - The combination of large-format 210 mm cells, 12-busbar (12BB) multi-busbar technology, and half-cut cell architecture minimizes resistive and thermal losses, delivering a peak power output of up to 610 Wp and a module efficiency of up to 21.55% - on par with direct competitors Seraphim Seco and Techwise Summit Series (both at 21.55%). - **Bifacial Design with Meaningful Rear-Side Gain** - The bifacial construction enables albedo harvesting, which under typical ground-mount conditions (light gravel, concrete) yields an additional 5-15% in annual energy output compared to monofacial modules. For utility-scale farms, this directly reduces LCOE without increasing mounting costs. - **30-Year Linear Power Warranty** - The manufacturer provides a 30-year performance warranty, matching peer comparables such as GCL and Seraphim. For projects seeking financing from green banks and infrastructure funds, the length of the power output warranty is a critical risk assessment criterion. - **Certified Mechanical Strength and PID Resistance** - Per Gamko's GKA210M series datasheet, the modules are certified to IEC 61215 and IEC 61730, rated for snow loads of 5,400 Pa and wind loads of 2,400 Pa, and carry a certified resistance to PID degradation. These ratings satisfy the requirements of large commercial installations within Poland's climate zones (I-III per PN-EN). - **Low Balance-of-System (BoS) Cost at High Power Density** - The 610 Wp format's high power density reduces the number of modules, mounting structures, and cabling runs per MW of installed capacity. Industry estimates indicate BoS cost savings of 3-7% compared to legacy 400-500 Wp formats - a material advantage for utility-scale projects. ## Cons - **PERC Technology - Not TOPCon or HJT** - In 2025-2026, the utility-scale market is increasingly dominated by N-type TOPCon cells (degradation ~0.4%/year, bifaciality ~85%) and HJT. The GKA210M120 series is based on P-type PERC (industry-reported degradation of 0.6-0.8%/year, bifaciality ~70%), resulting in measurably lower 25-30-year energy yield compared to peer modules at the same price point that have transitioned to next-generation cell technologies. - **Not Listed on BNEF Tier 1** - Gamko New Energy does not appear on the BNEF Tier 1 module manufacturer list as of Q1 2026 (which includes Jinko, LONGi, Trina, JA Solar, GCL, and others). The absence of a BNEF bankability rating may be a barrier for projects requiring financing from commercial banks or EU funds, which frequently apply Tier 1 status as an eligibility condition. - **Product Warranty of Only 12 Years** - The 12-year product warranty (covering material and workmanship defects) falls short of the benchmark set by leading manufacturers: Jinko, JA Solar, Trina, and LONGi offer 15-25 years. In due diligence assessments for debt-financed PV farms, this gap may affect lenders' valuation of residual risk. ## About this series The Gamko New Energy GKA210M120 series redefines performance standards through the use of **large-format 210 mm cells**, which form the foundation of modern energy systems. The use of Multi-busbar (MBB) technology and a precise Half-cut design significantly reduces internal losses and resistance, resulting in stable operation even under intense sunlight and elevated ambient temperatures. These modules effectively solve the problem of limited installation space by offering **maximum power density** from every square meter, which directly reduces the structural and installation costs of the entire system. Exceptional resistance to potential-induced degradation (PID) and certified durability against extreme snow and wind loads make this a solution dedicated primarily to **large-scale commercial projects** and photovoltaic farms. Compared to the competition, these panels stand out with an optimal balance between innovative technology and mechanical durability, which guarantees **long-term stability of energy yields** in the Polish climate. By choosing this series, investors gain operational certainty with minimal risk of micro-cracks, which ultimately allows for achieving the **lowest levelized cost of energy** (LCOE) while maintaining the highest fire and electrical safety standards. The GKA210M120 series is synonymous with technological advancement for the most demanding professionals in the PV industry. ## Notable figures - At 20.9% efficiency, this panel is 1.6pp below the \*\*TOPCon 550-600W\*\* median of 22.4% - At 208.5 W/m², this panel generates 15.9 W/m² less per unit area than \*\*TOPCon 550-600W\*\* median (224.4 W/m²) - -0.34%/°C temperature coefficient - 0.05pp worse than \*\*TOPCon 550-600W\*\* median (-0.29%/°C), expect higher hot weather losses - 28.0 kg weight - 3.2 kg lighter than \*\*TOPCon 550-600W\*\* median (31.2 kg), reducing installation effort - In the top 74% for efficiency among all TOPCon panels ## Questions ### What warranty does the Gamko New Energy GKA210M120 series carry? The GKA210M120 series comes with a 12-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means the manufacturer guarantees a defined minimum energy yield over three decades of operation. This represents the industry-standard warranty tier for commercial-class modules and provides investors with a predictable return on investment over a long time horizon. ### Is the Gamko GKA210M120 a bifacial panel, and how much additional energy can I expect? Yes, the GKA210M120 series uses bifacial technology, meaning the rear side of the module also harvests radiation reflected from the ground or surrounding surfaces. Depending on the albedo of the surface beneath the panels - for example, light-colored gravel ballast or a white roofing membrane - bifacial gain can range from 5% to as much as 20% compared to a monofacial equivalent. Ground-mounted installations over high-albedo surfaces yield the greatest bifacial benefit. ### Are the 610 Wp Gamko GKA210M120 panels suitable for a residential rooftop installation? Due to their 210 mm cell format and 120 half-cut cell configuration, modules in the GKA210M120 series achieve 610 Wp but come with the large physical dimensions and substantial weight typical of utility-scale class equipment. They are primarily designed for large-scale commercial projects and ground-mounted PV farms. For residential rooftop installations, smaller modules from Gamko's portfolio or other manufacturers are a more appropriate choice. ### What is PERC technology in the Gamko GKA210M120 panels and why does it matter? PERC (Passivated Emitter and Rear Cell) is a cell technology in which the rear surface of the silicon cell is passivated with a specialized reflective layer that redirects unabsorbed photons back into the semiconductor structure. In combination with the multi-busbar and half-cut cell architecture used in the GKA210M120 series, this translates into higher conversion efficiency, improved performance under diffuse irradiance conditions, and lower internal resistive losses compared to conventional BSF (Back Surface Field) technology. ### How does the Gamko GKA210M120 series perform in the Polish climate - specifically at low temperatures and under snow loads? The GKA210M120 series carries certified resistance to extreme snow and wind loads, making it well suited to Polish weather conditions characterized by heavy precipitation in winter. Photovoltaic modules inherently perform better at low temperatures than in heat, since rising cell temperature reduces open-circuit voltage. The half-cut cell architecture additionally reduces the risk of microcracks forming during freeze-thaw cycles, protecting module integrity throughout its entire service life. ### How does the Gamko GKA210M120 differ from standard 400-450 Wp modules available on the market? The primary distinction lies in the cell format - 210 mm versus the typical 182 mm or 166 mm - and the resulting single-module power output of 610 Wp. Fewer modules are required to reach a given system capacity, which means fewer electrical connections, lower balance-of-system (BoS) costs for racking structures, and reduced cabling expenditure. The GKA210M120 series is optimized for minimizing LCOE (levelized cost of energy) in large-scale projects rather than for small prosumer rooftop applications. ## 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-gka210m120-590 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.