--- title: "Gamko New Energy GKA210N120 680W Solar Panel - Specs & Review | ComparePV" description: "Gamko New Energy GKA210N120 680W solar panel. Specs: 24.03% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gamko-new-energy-gka210n120" updated: 2026-09-11 --- # Gamko New Energy GKA210N120 Light for its output, weak in heat 249 panels in the segment TOPCon 650-700 W ## Identity - **Manufacturer:** Gamko New Energy - **Model:** GKA210N120 - **Series:** GKA210N120 (660W-680W) - **Rated power:** 680 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 650-700 W (249 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 680 W | 665 W | Typical | | | Module efficiency | 24.03% | 22.40% | Strong - top 24% | 292 | | Power density | 240.3 | 223.7 | Strong - top 24% | 292 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 6% | 8,778 | | Weight (kg) | 28.0 kg | 34.6 kg | Strong - top 1% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 24.03% | 22.40% | Strong - top 24% | 292 | | Power density | 240.3 | 223.7 | Strong - top 24% | 292 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 6% | 8,778 | | Weight per kWp | 41.2 | 53.2 | Strong - top 1% | 172 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **41.2 kg per kWp** - Top 1% of the TOPCon 650-700 W segment, against a median of 53.2. Ranked 172nd in the whole database. - **24.03% module efficiency** - Top 24% of the TOPCon 650-700 W segment, against a median of 22.40%. - **240.3 watts per square metre** - Top 24% of the TOPCon 650-700 W segment, against a median of 223.7. ### Watch out for - **-0.340 %/°C temperature coefficient** - Bottom 6% of the TOPCon 650-700 W segment, against a median of -0.290. Ranked 8,778th in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 680 W - **Efficiency:** 24.03 % - **Voltage at Pmax (Vmp):** 36.58 V - **Current at Pmax (Imp):** 18.59 A - **Open-circuit voltage (Voc):** 43.90 V - **Short-circuit current (Isc):** 19.52 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 ### Physical - **Length:** 2172 mm - **Width:** 1303 mm - **Thickness:** 30 mm - **Weight:** 28.0 kg - **Area:** 2.83 m2 - **Power density:** 240.3 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:** 577 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 292 of 14005 | | Power density | 292 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 172 of 14005 | | Warranty | 21 of 14005 | ## Pros - **24.03% Efficiency — Top of the 680W Segment** - The module achieves 24.03% efficiency, clearly outperforming the Vikram Solar PARADEA (21.89%) and placing it near the AIKO Neostar 1U+ (24.3%) in the same power class. For rooftop installations with limited surface area, this translates into measurably more kWh per m². - **N-type TOPCon Cells — Lower Long-Term Degradation** - TOPCon N-type technology eliminates the Light-Induced Degradation (LID) effect characteristic of older P-type/PERC cells and delivers a superior power temperature coefficient. In practice, this means higher energy yields during summer months and a more stable production curve over the full system lifetime. - **Bifacial Design + 120 Half-Cut Cells** - The bifacial construction enables additional energy harvest from reflected irradiance (albedo gain), which is especially valuable on high-reflectivity surfaces such as gravel, concrete, or snow. The half-cut cell architecture reduces internal resistive losses and improves tolerance to partial shading compared to full-size cell modules. - **30-Year Linear Power Warranty** - The manufacturer provides a 30-year linear power output warranty, matching the standard offered by leading Tier-1 manufacturers such as JA Solar and LONGi. This warranty covers the entire projected economic lifetime of a PV system, eliminating the need for module replacement before the investment is paid off. - **IEC 61215 and IEC 61730 Certifications** - The series carries full IEC 61215 (mechanical and electrical performance) and IEC 61730 (safety) certifications, as well as ISO 9001/14001. The modules meet all formal requirements necessary for subsidy eligibility and grid connection in Poland and across the EU. ## Cons - **Efficiency Gap vs. AIKO Comet 3N72** - The AIKO Comet 3N72 (680W) achieves 25.2% efficiency versus 24.03% for the Gamko — a difference of 1.17 percentage points. On a 10 kWp system, this translates to approximately 0.5–0.7 m² of additional roof area required to deliver the same rated power output. For projects with critically constrained space, AIKO may be the better choice. - **12-Year Product Warranty — Below Tier-1 Standard** - Leading Tier-1 manufacturers (LONGi, JA Solar, Trina Solar) routinely offer 15–25 year product warranties. The Gamko GKA210N120 provides only a 12-year product warranty, meaning that any manufacturing defects emerging after year 12 leave the investor without manufacturer coverage. - **Smaller Manufacturer — Bankability Risk** - Gamko New Energy (approximately 1.2 GW of production capacity as of 2023, ~205 employees) does not appear in BNEF Tier-1 or Bloomberg NEF rankings, unlike AIKO or Vikram Solar. For projects requiring project finance or long-term PPAs, a smaller manufacturer may not satisfy the bankability and due diligence requirements of lending institutions. ## About this series The Gamko New Energy GKA210N120 (660W-680W) series consists of modules based on **N-type cells in TOPCon technology**, designed for high efficiency and stable operation in demanding conditions. The use of **half-cut cells** helps to minimize internal losses and improve performance under partial shading - which is important on roofs with chimneys, skylights, or on ground-mounted installations with irregular sunlight exposure. Another advantage is **good performance in low light** - in practice, this means more predictable energy production in the morning, evening, and on cloudy days, which makes self-consumption easier. Furthermore, the module's design, including a **robust connection box with high protection class**, promotes durability in humid and dusty environments. This series is particularly recommended for large industrial roofs, PV farms, and investors who want to maximize energy yield from limited space without compromising reliability. ## Notable figures - Efficiency of 24.0% is 1.6pp above the \*\*TOPCon 650-700W\*\* median (22.4%) - 240.3 W/m² power density - 16.6 W/m² more than \*\*TOPCon 650-700W\*\* median (223.7 W/m²), more power per roof area - Temperature coefficient of -0.34%/°C is 0.05pp worse than \*\*TOPCon 650-700W\*\* median (-0.29%/°C) - higher losses in summer heat - At 28.0 kg, this panel is 6.6 kg lighter than \*\*TOPCon 650-700W\*\* median (34.6 kg) - easier handling during installation - In the top 2% for efficiency among all TOPCon panels ## Questions ### What warranty applies to Gamko New Energy GKA210N120 panels? The GKA210N120 series carries a 12-year product warranty covering manufacturing defects and mechanical damage. In addition, the power output warranty extends to 30 years, meaning the manufacturer guarantees a specified minimum yield over three decades of operation. These are standard terms for industrial-grade modules and a clear signal that Gamko New Energy stands behind the long-term durability of this series. ### What is TOPCon technology in the Gamko GKA210N120 panels, and is the premium price justified? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that uses an ultra-thin tunnel oxide layer to suppress electron recombination. In practice, this translates to higher module efficiency (up to approximately 23%) and a slower degradation rate compared to the widely used PERC technology. For an investor, this means more energy harvested from the same roof area over the entire system lifetime — which, at the scale of a commercial installation, typically justifies the higher upfront cost of this technology. ### Are the GKA210N120 panels bifacial, and what does that mean in practice? Yes, the GKA210N120 series consists of bifacial modules. The rear side of the panel captures irradiance reflected from the surface beneath it, which in ground-mounted installations or on light-colored substrates can increase energy yield by several to over ten percent. The gain is greatest on PV farms with bright soil or gravel beneath the array, while on a dark pitched roof the bifacial benefit is more modest. ### Are Gamko GKA210N120 panels suitable for a utility-scale PV farm or a large industrial rooftop? Yes, utility-scale and commercial rooftop applications are among the primary target use cases for this series. With a peak power of up to 680 Wp per module, PV farms and industrial installations can be built using fewer modules and with a shorter installation time. The bifacial design further boosts yield in open-field environments. Wind load resistance of 2400 Pa and snow load resistance of 5400 Pa make the modules suitable even for demanding climatic conditions in Poland. ### How do the Gamko GKA210N120 panels perform under overcast skies and low-irradiance conditions? The GKA210N120 series exhibits strong low-light performance, which is a characteristic advantage of N-type TOPCon cells. On cloudy days and during morning and evening hours, these modules generate proportionally more energy than older PERC-based technologies. For prosumers and PV farms in Poland — where overcast conditions are frequent — this translates into higher annual energy yields and a more predictable production profile. ### Do the half-cut cells in the GKA210N120 series make a difference when shading occurs? Yes, the use of half-cut cells has a measurable impact on module performance under partial shading. Each cell half operates with a degree of independence, so a shadow cast by a chimney, dormer window, or structural element does not suppress the output of the entire panel — only the shaded portion is affected. In rooftop installations with irregular irradiance patterns, this can result in a noticeably higher daily energy yield compared to modules based on full-size cells. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/gka210n120-660-680w-e39c617968d3.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | -30 W, cooler, +1.2 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, heavier, +1.2 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, heavier, +1.0 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | -35 W, cooler, +1.0 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, heavier, +1.0 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, heavier, +0.9 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | -10 W, cooler, +0.8 pp | | [Gamko New Energy GKA210M120-590W](https://comparepv.com/panel/gamko-new-energy-gka210m120-590w) | 590 W | -90 W, -3.2 pp | | [Gamko New Energy GKA210M120-595W](https://comparepv.com/panel/gamko-new-energy-gka210m120-595w) | 595 W | -85 W, -3.0 pp | | [Gamko New Energy GKA210M120-600W](https://comparepv.com/panel/gamko-new-energy-gka210m120-600w) | 600 W | -80 W, -2.8 pp | | [Gamko New Energy GKA210M120-605W](https://comparepv.com/panel/gamko-new-energy-gka210m120-605w) | 605 W | -75 W, -2.7 pp | | [Gamko New Energy GKA210M120-610W](https://comparepv.com/panel/gamko-new-energy-gka210m120-610w) | 610 W | -70 W, -2.5 pp | | [Gamko New Energy GKA210N120-675](https://comparepv.com/panel/gamko-new-energy-gka210n120-675) | 675 W | Very close match | | [Q-SUN Solar QN-670HJT-01](https://comparepv.com/panel/q-sun-solar-qn-670hjt-01) | 670 W | Cooler, heavier, -0.3 pp | | [Gamko New Energy GKA210N120-670](https://comparepv.com/panel/gamko-new-energy-gka210n120-670) | 670 W | -10 W, -0.4 pp | | [Q-SUN Solar QN-665HJT-01](https://comparepv.com/panel/q-sun-solar-qn-665hjt-01) | 665 W | Cooler, heavier, -0.5 pp | --- Source: https://comparepv.com/panel/gamko-new-energy-gka210n120 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.