--- title: "Gokin GK-5-54HGb-485M Solar Panel: Specs & Datasheet | ComparePV" description: "Gokin GK-5-54HGb-485M solar panel. Specs: 24.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gokin-gk-5-54hgb-485m" image: "https://comparepv.com/og/panel/gokin-gk-5-54hgb-485m.png" updated: 2026-09-11 --- # Gokin GK-5-54HGb-485M Space saver, no clear weak spot 167 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** Gokin - **Model:** GK-5-54HGb-485M - **Series:** GK-5-54HGb - **Rated power:** 485 W - **Cell technology:** Back Contact ## How it compares Compared against segment Back Contact 450-500 W (167 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 485 W | 475 W | Strong - top 24% | | | Module efficiency | 24.30% | 23.52% | Strong - top 8% | 145 | | Power density | 243.4 | 235.2 | Strong - top 2% | 145 | | Temperature coefficient | -0.260 | -0.260 | Typical | 515 | | Weight (kg) | 21.0 kg | 23.5 kg | Strong - top 5% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 24.30% | 23.52% | Strong - top 8% | 145 | | Power density | 243.4 | 235.2 | Strong - top 2% | 145 | | Temperature coefficient | -0.260 | -0.260 | Typical | 515 | | Weight per kWp | 43.3 | 48.5 | Strong - top 5% | 287 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **243.4 watts per square metre** - Top 2% of the Back Contact 450-500 W segment, against a median of 235.2. Ranked 145th in the whole database. - **43.3 kg per kWp** - Top 5% of the Back Contact 450-500 W segment, against a median of 48.5. Ranked 287th in the whole database. - **24.30% module efficiency** - Top 8% of the Back Contact 450-500 W segment, against a median of 23.52%. Ranked 145th in the whole database. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 485 W - **Efficiency:** 24.30 % - **Voltage at Pmax (Vmp):** 34.92 V - **Current at Pmax (Imp):** 13.90 A - **Open-circuit voltage (Voc):** 41.36 V - **Short-circuit current (Isc):** 14.47 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:** 1757 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.0 kg - **Area:** 1.99 m2 - **Power density:** 243.4 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:** 431 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 145 of 14129 | | Power density | 145 of 14129 | | Temperature coefficient | 515 of 14129 | | Weight | 287 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Up to 24.3% Efficiency - on Par with Jinko Tiger Neo** - Peak efficiency of 24.3% is virtually identical to that of the peer-comparable Jinko Tiger Neo III 48QL6-DB (24.27%), placing the GK-5-54HGb among the top performers in the 54-cell format. Back Contact technology eliminates front-busbar resistive losses, recovering approximately 1.1% of active cell area compared to standard TOPCon designs. - **Low Temperature Coefficient - N-type Back Contact Architecture** - The N-type Back Contact architecture delivers a Pmax temperature coefficient of approximately -0.26%/°C (per datasheets of comparable Gokin BC models in the GK-3-54HGFb series), versus -0.30%/°C for TOPCon and -0.35%/°C for PERC. At a module operating temperature of 60°C during a Polish summer, this translates to roughly 2% higher energy yield compared to PERC. - **30-Year Linear Power Warranty** - The performance warranty covers 30 years with annual degradation capped at 0.35% (per datasheets of comparable Gokin BC models). The peer-comparable Emmvee TITANIUM BLACK offers only 25 years, while the ZNShine ZXM7-UHLD120 matches the 30-year term at a similar degradation rate. Gokin meets the benchmark set by the premium segment. - **Dual Glass - Long-Term Durability and Corrosion Resistance** - A glass backsheet in place of a polymer backfilm eliminates the risk of PID degradation and corrosion - a meaningful advantage in the Polish climate given its wide temperature swings and humidity variation. The glass-glass construction realistically extends module service life beyond the guaranteed 30 years and provides superior resistance to microcracks under snow loads. - **All-Black Aesthetics with No Front Busbars** - Relocating all electrical interconnections to the rear of the cell removes visible silver busbars, yielding a uniform black surface across the entire module face. This distinguishes the series from conventional busbar-visible TOPCon panels and makes it the preferred choice for BIPV installations, flat-roof systems, and architectural projects where the array surface is prominently visible. ## Cons - **Manufacturer Not Listed on BNEF Tier 1** - Gokin Solar (est. 2019) does not appear on the bankable BNEF Tier 1 list (Q1 2026), unlike the peer-comparable Jinko Solar, a long-standing leader on that list. The absence of bankable status may restrict access to project financing from banks and funds that require Tier 1 manufacturer insurance coverage for commercial-scale installations. - **15-Year Product Warranty vs. 25 Years from Jinko** - The product warranty stands at 15 years, whereas the Jinko Tiger Neo III 48QL6-DB - at a nearly identical efficiency of 24.27% and the same rated power of 485 Wp - carries a 25-year product warranty. The 10-year gap in workmanship coverage represents a material risk for residential prosumer and commercial installations with a 25-30 year investment horizon. ## About this series The GK-5-54HGb series features advanced photovoltaic modules using innovative N-type Back Contact technology, positioning them at the very forefront of the most efficient solutions on the Polish market. By moving the busbars entirely to the back of the cell, these panels offer **maximum light absorption area** and flawless aesthetics that fit perfectly into modern architectural designs. The dual glass design provides **outstanding resistance to external factors**, effectively eliminating the risk of micro-cracks and corrosion in variable, demanding climates. This product is designed for prosumers and companies aiming to maximize yields while minimizing the installation area. These modules solve the power degradation problem by offering **minimal annual performance decline**, ensuring stable energy production for over 30 years. Exceptional **efficiency in low-light conditions** allows the system to work effectively even on cloudy days and during autumn-winter periods. What sets them apart from the competition is a unique combination of bifacial technology and busbarless architecture, which enables **additional energy gain from reflected radiation** while maintaining the highest mechanical durability. By choosing GK-5-54HGb, you invest in technology that combines a prestigious look with uncompromising profitability. ## Notable figures - 24.3% module efficiency - 0.8pp better than the \*\*Back Contact 450-500W\*\* median of 23.5% - 243.4 W/m² power density - 8.2 W/m² more than \*\*Back Contact 450-500W\*\* median (235.2 W/m²), more power per roof area - At -0.26%/°C, hot weather performance is typical for \*\*Back Contact 450-500W\*\* panels - Weight of 21.0 kg (2.5 kg below \*\*Back Contact 450-500W\*\* median of 23.5 kg) allows easier transport and roof mounting - #145 for efficiency, #515 for temperature performance out of 14129 panels ## Questions ### What is Back Contact technology in the Gokin GK-5-54HGb panels and why is it worth choosing? In Back Contact technology, all electrical conductors are relocated to the rear of the cell, allowing the entire front surface of the module to absorb solar irradiance. For the GK-5-54HGb series, this translates to a peak power output of 485 W within a compact form factor. N-type cells additionally exhibit a lower temperature coefficient and slower degradation than conventional P-type cells, resulting in higher energy yield throughout the entire service life of the installation. ### What warranty is offered on the Gokin GK-5-54HGb panels and what exactly does it cover? The manufacturer provides a 15-year product warranty covering material and manufacturing defects. A separate 30-year linear power output warranty also applies, under which the Gokin GK-5-54HGb panel is guaranteed to retain a specified percentage of its nominal 485 W power rating over the entire warranty period. A 30-year power warranty is among the longest standards available on the market and reflects the manufacturer's confidence in the long-term durability of their dual-glass N-type modules. ### Do the Gokin GK-5-54HGb panels perform effectively in winter and under overcast conditions? Yes. The N-type Back Contact cells used in the GK-5-54HGb series feature high low-light efficiency, which is critical in the Polish climate. The system generates measurable energy output even on cloudy days and during autumn and winter months when the solar angle of incidence is low. The combination of a low temperature coefficient and effective performance under diffuse irradiance significantly improves annual energy yield compared to older P-type technologies. ### How durable is the dual-glass construction of the GK-5-54HGb modules and is it suitable for harsh weather conditions? The GK-5-54HGb panels feature a glass layer on both the front and the rear of the module, replacing the standard polymer backsheet. This construction eliminates the risk of surface corrosion, provides effective protection against moisture and ammonia ingress, and minimizes the formation of microcracks in the cells during thermal cycling. Glass also exhibits superior resistance to snow and wind loads, making this series a sound choice for regions with heavy snowfall or high wind exposure. ### Is Gokin a proven PV module manufacturer and can it be trusted? Gokin Solar is a Chinese manufacturer specializing in advanced photovoltaic modules; the company is currently not listed on the Bloomberg NEF Tier 1 index. This does not directly indicate lower product quality, and the GK-5-54HGb series employs modern N-type Back Contact technology and holds the required industry certifications. It is nonetheless advisable to verify that your chosen installer and insurer accept brands outside the Tier 1 list, and to carefully review the manufacturer's warranty claims procedure before committing to a purchase. ### Is the 485 W Gokin GK-5-54HGb panel suitable for a small prosumer rooftop installation on a single-family home? Yes. The 485 W power rating and physical format of the GK-5-54HGb series allow residential systems in the 6-15 kW range to be designed efficiently, requiring fewer modules than would be necessary with lower-wattage panels. A reduced module count translates directly to lower installation labor costs and a smaller footprint on the roof surface. Prior to purchase, it is advisable to confirm that the intended inverter is compatible with the electrical parameters of this series, including the open-circuit voltage (Voc) characteristic of N-type Back Contact cells. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/GK-5-54HGb_EN-202504-V01-95f48385ca55.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +25 W, heavier, +0.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +10 W, +0.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +20 W, cooler, heavier | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +20 W, heavier, +0.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Very close match | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +15 W, cooler, heavier | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +15 W | | [Gokin GK-5-54HG-445M](https://comparepv.com/panel/gokin-gk-5-54hg-445m) | 445 W | -40 W, -2.0 pp | | [Gokin GK-5-54HG-450M](https://comparepv.com/panel/gokin-gk-5-54hg-450m) | 450 W | -35 W, -1.7 pp | | [Gokin GK-5-54HG-455M](https://comparepv.com/panel/gokin-gk-5-54hg-455m) | 455 W | -30 W, -1.5 pp | | [Gokin GK-5-54HG-460M](https://comparepv.com/panel/gokin-gk-5-54hg-460m) | 460 W | -25 W, -1.2 pp | | [Gokin GK-5-54HG-465M](https://comparepv.com/panel/gokin-gk-5-54hg-465m) | 465 W | -20 W, -1.0 pp | --- Source: https://comparepv.com/panel/gokin-gk-5-54hgb-485m Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.