--- title: "Gamko New Energy GKA166M120-375 Solar Panel: Specs & Datasheet | ComparePV" description: "Gamko New Energy GKA166M120-375 solar panel. Specs: 20.57% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gamko-new-energy-gka166m120-375" image: "https://comparepv.com/og/panel/gamko-new-energy-gka166m120-375.png" updated: 2026-09-11 --- # Gamko New Energy GKA166M120-375 Light for its output, weak in heat 112 panels in the segment TOPCon 350-400 W ## Identity - **Manufacturer:** Gamko New Energy - **Model:** GKA166M120-375 - **Series:** GKA166M120 - **Rated power:** 375 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 350-400 W (112 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 375 W | 380 W | Typical | | | Module efficiency | 20.57% | 18.20% | Strong - top 8% | 11,268 | | Power density | 205.7 | 181.8 | Strong - top 7% | 11,229 | | Temperature coefficient | -0.360 | -0.290 | Weak - bottom 4% | 12,425 | | Weight (kg) | 18.0 kg | 26.0 kg | Strong - top 2% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.57% | 18.20% | Strong - top 8% | 11,268 | | Power density | 205.7 | 181.8 | Strong - top 7% | 11,229 | | Temperature coefficient | -0.360 | -0.290 | Weak - bottom 4% | 12,425 | | Weight per kWp | 48.0 | 68.9 | Strong - top 2% | 2,006 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **48.0 kg per kWp** - Top 2% of the TOPCon 350-400 W segment, against a median of 68.9. Ranked 2,006th in the whole database. - **205.7 watts per square metre** - Top 7% of the TOPCon 350-400 W segment, against a median of 181.8. Ranked 11,229th in the whole database. - **20.57% module efficiency** - Top 8% of the TOPCon 350-400 W segment, against a median of 18.20%. Ranked 11,268th in the whole database. ### Watch out for - **-0.360 %/°C temperature coefficient** - Bottom 4% of the TOPCon 350-400 W segment, against a median of -0.290. Ranked 12,425th in the whole database. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 375 W - **Efficiency:** 20.57 % - **Voltage at Pmax (Vmp):** 34.34 V - **Current at Pmax (Imp):** 10.92 A - **Open-circuit voltage (Voc):** 41.37 V - **Short-circuit current (Isc):** 11.42 A ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 ### Physical - **Length:** 1756 mm - **Width:** 1038 mm - **Thickness:** 30 mm - **Weight:** 18.0 kg - **Area:** 1.82 m2 - **Power density:** 205.7 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:** 318 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11268 of 14129 | | Power density | 11229 of 14129 | | Temperature coefficient | 12425 of 14129 | | Weight | 2006 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Up to 20.85% Efficiency - Segment Leader** - The top variant in the series (380 Wp) achieves a module efficiency of 20.85%, marginally exceeding the VDS-S120/M6H (20.8%) and clearly outperforming both Heckert Solar NeMo 3.0 120M models (20.0%). Among 120-cell half-cut PERC M6 modules, this result places the series in the upper quartile of its peer group. - **30-Year Linear Power Output Warranty** - Gamko provides a 30-year linear performance warranty, whereas the Heckert Solar NeMo 3.0 120M covers only 25 years. The extended warranty horizon directly lengthens the bankable cash-flow period for IRR calculations on both prosumer systems and utility-scale PV plants. - **Half-Cut Cells + 9-Busbar Design** - The combination of half-cut cell technology with a 9-busbar layout reduces resistive losses and minimizes the impact of partial shading on overall string output. This configuration is technically on par with solutions employed by larger PERC brands in the same power class. - **IEC 61215 and IEC 61730 Certified** - The module carries a full set of key certifications (IEC 61215, IEC 61730, CE-LVD, CE-EMC), enabling lawful installation across all EU markets and satisfying the baseline requirements for subsidy applications (Mój Prąd, KPO). - **Mechanical Load Resistance** - The module is certified for a snow load of 5,400 Pa and a wind load of 2,400 Pa - values identical to those of the Heckert Solar NeMo 3.0 and appropriate for Polish climatic conditions (snow load zones II-III per PN-EN 1991-1-3). ## Cons - **12-Year Product Warranty (vs. 15 Years for Competitors)** - The Heckert Solar NeMo 3.0 120M offers a 15-year product warranty covering material and workmanship defects, whereas the GKA166M120 provides only 12 years. This 3-year gap may serve as a competitive argument when B2B installers compare proposals side by side. - **Manufacturer Not Listed on BNEF Tier 1** - Gamko New Energy (manufacturing capacity ~1.2 GW in 2023) does not appear on any publicly available BNEF Tier 1 list (Q1 2026). For installations financed through loans or leasing, lender bankability requirements may present an obstacle, potentially limiting the series' applicability in PV farm projects above 50 kWp. - **PERC Technology, Not N-Type TOPCon** - While Gamko itself already offers the GKA144N series based on N-type TOPCon - which delivers lower LID degradation and higher performance at elevated temperatures - the GKA166M120 relies on the older P-type PERC architecture. Over the 30-year warranty horizon, the difference in cumulative energy yield may be significant. ## About this series The GKA166M120 panel series from Gamko New Energy is an advanced solution based on **M6-type cells**, which optimize power density in a standard module format. The use of **Half-Cut technology and a 9-busbar design** significantly reduces resistance losses and improves current flow, which directly translates into higher efficiency in real-world weather conditions. Thanks to this, these panels perform excellently on cloudy days or at low solar incidence angles, effectively solving the problem of yield instability in the Polish climate. The construction of the GKA166M120 module has been optimized for **resistance to extreme mechanical loads**, making it an ideal choice for prosumer installations and demanding PV farms where durability is of key importance. They are distinguished from the competition by their exceptional **resistance to the PID effect** and degradation caused by external factors, which guarantees investors long-term stability of energy production without sudden power drops. The low operating temperature of the module prevents the system from overheating on hot days, which further protects the installation from premature wear. By choosing this series, the user receives monocrystalline PERC technology that combines innovation with maximum reliability, allowing for a quick return on investment while ensuring energy security for the household or business. ## Notable figures - At 20.6% efficiency, this panel is 4.6pp above typical \*\*TOPCon 0-400W\*\* modules (median: 16.0%) - Power density of 205.7 W/m² packs 45.9 W/m² more into the same footprint vs \*\*TOPCon 0-400W\*\* median (159.8 W/m²) - -0.36%/°C temperature coefficient - 0.07pp worse than \*\*TOPCon 0-400W\*\* median (-0.29%/°C), expect higher hot weather losses - At 18.0 kg, this panel is 5.5 kg lighter than \*\*TOPCon 0-400W\*\* median (23.5 kg) - easier handling during installation - Ranked #11268 out of 14129 panels for efficiency in the database ## Questions ### What warranty coverage applies to the Gamko New Energy GKA166M120 panels? The GKA166M120 series comes with a 12-year product warranty covering manufacturing defects and a 30-year linear power output warranty. Over three decades of operation, the manufacturer guarantees that performance will be maintained at the declared level, ensuring a predictable return on investment and protecting against unexpected energy yield losses throughout the system's entire lifecycle. ### Do the GKA166M120 panels perform well on overcast days typical of the Polish climate? Yes. Thanks to Half-Cut cell technology and a 9-busbar M6 cell design, the GKA166M120 series exhibits enhanced performance under diffuse light conditions. PERC technology improves absorption of reflected irradiance, allowing the panels to maintain higher energy yields even during Poland's characteristic autumn and winter periods with overcast skies and low solar angles. ### What does the Half-Cut 9BB technology used in the GKA166M120 modules mean, and why does it matter? Half-Cut refers to laser-cutting each cell in half, which reduces resistive losses and limits the impact of partial shading on the module as a whole. Nine busbars shorten the current path and reduce the risk of microcracks. In practice, the GKA166M120 panel produces more energy at the same irradiance level than older modules equipped with four or five busbars. ### What mechanical loads can the Gamko GKA166M120 panels withstand, and are they suitable for rooftop installations in mountainous regions? The GKA166M120 modules are certified for wind loads up to 2,400 Pa and snow loads up to 5,400 Pa in accordance with IEC 61215 and IEC 61730 standards. These values exceed the requirements of typical installation sites across Poland, including sub-alpine areas with heavy snowfall, meaning the panel will safely bear a thick layer of wet accumulated snow without any risk of frame deformation. ### Are the GKA166M120 panels resistant to the PID effect, and what does that mean for the system owner? Yes, the GKA166M120 series features advanced resistance to PID - Potential Induced Degradation. PID causes accelerated power loss under conditions of high humidity and elevated system voltage. Resistance to this phenomenon ensures that after 15 or 20 years of operation the actual output power of the panel will remain close to the manufacturer's declared value, which directly translates into higher energy yields throughout the entire warranty period. ### Is the GKA166M120 380 Wp panel suitable for a prosumer rooftop installation on a single-family home? Yes, the GKA166M120 series rated up to 380 Wp is designed for both prosumer installations on pitched and flat roofs and commercial-scale PV plants. The module is not bifacial, so a standard single-sided mounting configuration is fully sufficient to achieve the declared power output. Its high mechanical durability and PID resistance make it a solid choice for a residential system aimed at long-term, reliable performance. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/GKA166M120-360-380W-ff30edeca343.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, +2.6 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, +2.6 pp, -5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -35 W, lighter, +2.4 pp | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | -15 W, lighter, +2.4 pp | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | +2.4 pp | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +25 W, +2.4 pp | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | +25 W, +2.4 pp | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | +2.4 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +2.0 pp, +10 yr warranty | | [Maxeon SPR-MAX3-425-R](https://comparepv.com/panel/maxeon-spr-max3-425-r) | 425 W | Cooler, +1.8 pp, +10 yr warranty | | [Gamko New Energy GKA166M120-360W](https://comparepv.com/panel/gamko-new-energy-gka166m120-360w) | 360 W | -15 W, -0.8 pp | | [Gamko New Energy GKA166M120-365W](https://comparepv.com/panel/gamko-new-energy-gka166m120-365w) | 365 W | -10 W, -0.6 pp | | [Gamko New Energy GKA166M120-370W](https://comparepv.com/panel/gamko-new-energy-gka166m120-370w) | 370 W | -0.3 pp | | [Gamko New Energy GKA166M120-380W](https://comparepv.com/panel/gamko-new-energy-gka166m120-380w) | 380 W | +0.3 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +135 W, cooler, +4.4 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +120 W, cooler, +4.2 pp | --- Source: https://comparepv.com/panel/gamko-new-energy-gka166m120-375 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.