--- title: "Gokin GK-3-54HGF-490M 490W Solar Panel - Specs & Review | ComparePV" description: "Gokin GK-3-54HGF-490M 490W solar panel. Specs: 24.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gokin-gk-3-54hgf-490m" updated: 2026-09-11 --- # Gokin GK-3-54HGF-490M Light for its output, no clear weak spot 156 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** Gokin - **Model:** GK-3-54HGF-490M - **Series:** GK-3-54HGF - **Rated power:** 490 W - **Cell technology:** Back Contact ## How it compares Compared against segment Back Contact 450-500 W (156 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 490 W | 475 W | Strong - top 9% | | | Module efficiency | 24.00% | 23.50% | Strong - top 22% | 303 | | Power density | 240.1 | 235.2 | Strong - top 23% | 313 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight (kg) | 21.4 kg | 23.5 kg | Strong - top 8% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 24.00% | 23.50% | Strong - top 22% | 303 | | Power density | 240.1 | 235.2 | Strong - top 23% | 313 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight per kWp | 43.7 | 48.0 | Strong - top 8% | 323 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **43.7 kg per kWp** - Top 8% of the Back Contact 450-500 W segment, against a median of 48.0. Ranked 323rd in the whole database. - **24.00% module efficiency** - Top 22% of the Back Contact 450-500 W segment, against a median of 23.50%. - **240.1 watts per square metre** - Top 23% of the Back Contact 450-500 W segment, against a median of 235.2. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 490 W - **Efficiency:** 24.00 % - **Voltage at Pmax (Vmp):** 33.99 V - **Current at Pmax (Imp):** 14.42 A - **Open-circuit voltage (Voc):** 40.47 V - **Short-circuit current (Isc):** 15.15 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** Back Contact - **Cell count:** 108 ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.4 kg - **Area:** 2.04 m2 - **Power density:** 240.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 88.8 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.35 % - **Output after 30 years:** 435 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 303 of 14005 | | Power density | 313 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 323 of 14005 | | Warranty | 21 of 14005 | ## Pros - **23.5–24.5% Efficiency – Highest in Class** - The GK-3-54HGF series achieves a module efficiency 1.24–3.47 percentage points higher than comparably rated competing modules: Lina Energy LEPV 132 HC ICON PLUS (21.06%), Emmvee GRAPHITE (21.03%), and Techwise Solar TW-500HT-06 (22.26%). This translates directly into higher annual energy yield on constrained roof space, a critical advantage in high-density residential and commercial installations. - **Back-Contact Architecture – Zero Busbar Shading** - Relocating all electrical contacts to the rear of the cell eliminates busbar-induced shading and increases the light-collecting active area by approximately 1.1% compared with TOPCon modules of the same dimensions. The absence of front-side metal contacts also reduces the risk of corrosion and light-induced micro-cracking on the irradiated surface. - **Degradation ≤0.35%/yr and 30-Year Linear Power Warranty** - The manufacturer guarantees first-year degradation ≤1% and subsequent annual degradation ≤0.35%/yr. Against the industry median of approximately 0.5–0.55%/yr, this yields a meaningfully higher cumulative energy output over a full 30-year service life. A 30-year linear power warranty represents a premium standard that most PERC modules and comparable 500 W peer products cannot match. - **Mechanical Resilience: 5,400 Pa / 25 mm Hail @ 23 m/s** - The certified front-side static load rating of 5,400 Pa — more than twice the IEC minimum of 2,400 Pa — combined with a passed hail test using 25 mm ice balls at 23 m/s places this module among the most mechanically robust products on the market. This is particularly relevant for the Polish climate, where heavy snow accumulation and localized hailstorms are realistic operational scenarios. - **Certified PID, Salt Mist, and Humidity Resistance** - Gokin confirms certified resistance to potential-induced degradation (PID) and successful completion of salt mist and damp heat testing, making the series suitable for both inland installations and coastal environments with elevated salinity and humidity. ## Cons - **No BNEF Tier-1 Status – Bankability Risk** - Gokin Solar does not appear on the BNEF Tier-1 list; the manufacturer first appeared in PV Tech Bankability Ratings only in April 2026 without a rating comparable to market leaders (JinkoSolar, LONGi, and Canadian Solar each hold an AA rating). For commercial projects requiring project finance or investment insurance, the absence of Tier-1 status may constitute a formal barrier to lender or insurer acceptance. - **15-Year Product Warranty – Below Premium-Tier Leaders** - Despite a 30-year linear power warranty, the workmanship (product) warranty covers only 15 years, whereas leading manufacturers such as REC and Panasonic HIT offer 25 years. Gokin was founded in 2019, which further raises questions about the enforceability of warranty claims over the full declared period. ## About this series The Gokin GK-3-54HGF solar panel series utilizes state-of-the-art **N-type TOPCon cell technology**, which provides significantly higher energy conversion efficiency compared to traditional solutions. A key differentiator of this line is the **bifacial double glass** design, where the use of two layers of tempered glass drastically increases the modules' resistance to harsh weather conditions and minimizes the risk of chemical degradation. Thanks to this, users gain certainty regarding the longevity of the installation even in the demanding Polish climate. These panels effectively solve the problem of performance drops under low light intensity, offering excellent yields on cloudy days and stable operation at high temperatures. The GK-3-54HGF series is primarily dedicated to demanding individual customers and companies that aim to **maximize profits from limited roof space**. What distinguishes this product from the competition is its exceptionally low annual degradation, which, combined with **high resistance to mechanical loads**, guarantees investment security for many years. By choosing these modules, investors opt for proven technology that combines aesthetic design with uncompromising component durability, making them one of the most effective solutions currently available in the premium segment. ## Notable figures - Efficiency of 24.0% matches the \*\*Back Contact 450-500W\*\* median - At 240.1 W/m² power density, this panel generates 4.9 W/m² more per unit area than \*\*Back Contact 450-500W\*\* median (235.2 W/m²) - Temperature coefficient of -0.26%/°C matches the \*\*Back Contact 450-500W\*\* median - 21.4 kg weight - 2.1 kg lighter than \*\*Back Contact 450-500W\*\* median (23.5 kg), reducing installation effort - Ranked #303 out of 14005 panels for efficiency in the database ## Questions ### What warranty comes with Gokin GK-3-54HGF panels and what does it cover? The GK-3-54HGF series carries a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. The linear power warranty means the manufacturer guarantees that module output will remain above specified degradation thresholds for three decades — a premium-tier standard in the photovoltaic industry. Consult the product datasheet or your authorized distributor for the exact annual degradation limits. ### What is Back Contact technology in the GK-3-54HGF panels and is it worth the premium? In Back Contact cells, all electrical contacts are relocated to the rear side of the cell. This leaves the entire front surface available for light collection, with no shading losses from metal busbars or ribbons. The result is a module efficiency of 23.5–24.5% for the GK-3-54HGF — among the highest commercially available ratings — translating into a measurable increase in energy yield per square meter of roof area. ### Can Gokin GK-3-54HGF panels handle the Polish climate — snow loads, frost, and overcast conditions? Yes. The GK-3-54HGF modules are rated for an operating temperature range of -40 °C to +85 °C, so Polish winters present no operational issue. They are engineered to withstand a front-side static mechanical load of 5,400 Pa — equivalent to a substantial snow accumulation — and hail impact from 25 mm diameter stones. Additionally, the low temperature coefficient of -0.26 %/°C means the modules lose less power during summer heat events than conventional panels do. ### Is the GK-3-54HGF series a bifacial panel — does it collect light from both sides? No, the GK-3-54HGF is a monofacial module with a single-glass construction. It does not harvest reflected irradiance from the ground surface the way bifacial modules do. In return, it offers a simpler design, lower weight (approximately 21.4 kg), and easier installation on standard pitched roofs. The Back Contact cell technology delivers high efficiency without requiring a dual-glass or bifacial configuration. ### What is the peak power output of the GK-3-54HGF panels and how many are needed for a typical residential installation? The module's peak power output is 500 Wp. For a typical residential system rated at 6 kWp, 12 panels are sufficient; for a 10 kWp system — increasingly common in today's residential market — 20 panels are required. The high per-unit power rating means you achieve the same total system capacity while occupying significantly less roof space, a meaningful advantage where available area is constrained. ### Is Gokin a reliable solar panel manufacturer even though it is not classified as Tier 1? Gokin Solar is a Chinese manufacturer with a proprietary Back Contact technology platform whose modules are CE-certified and qualified for use in 1,500 V DC systems. The absence of a Tier 1 designation (the bankability ranking published by BloombergNEF) does not in itself indicate inferior product quality; however, it is advisable to confirm that your chosen distributor provides local warranty support, as enforcing warranty claims directly against an overseas manufacturer can be considerably more difficult. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/GK-3-54HGF-BF-SG-F1_EN-7d5a7a12e9da.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, heavier, +1.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +0.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, heavier, +0.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +0.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, heavier, +0.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +10 W, +0.5 pp | | [Gokin GK-3-54HGb-470M](https://comparepv.com/panel/gokin-gk-3-54hgb-470m) | 470 W | -20 W, -1.0 pp | | [Gokin GK-3-54HGb-475M](https://comparepv.com/panel/gokin-gk-3-54hgb-475m) | 475 W | -15 W, -0.7 pp | | [Gokin GK-3-54HGb-480M](https://comparepv.com/panel/gokin-gk-3-54hgb-480m) | 480 W | -10 W, -0.5 pp | | [Gokin GK-3-54HGb-485M](https://comparepv.com/panel/gokin-gk-3-54hgb-485m) | 485 W | Very close match | | [Gokin GK-3-54HGb-495M](https://comparepv.com/panel/gokin-gk-3-54hgb-495m) | 495 W | +0.3 pp | --- Source: https://comparepv.com/panel/gokin-gk-3-54hgf-490m Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.