--- title: "Gokin GK-5-54HG-485M 485W Solar Panel - Specs & Review | ComparePV" description: "Gokin GK-5-54HG-485M 485W solar panel. Specs: 24.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gokin-gk-5-54hg-485m" updated: 2026-09-11 --- # Gokin GK-5-54HG-485M Space saver, no clear weak spot 156 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** Gokin - **Model:** GK-5-54HG-485M - **Series:** GK-5-54HG - **Rated power:** 485 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) | 485 W | 475 W | Strong - top 21% | | | Module efficiency | 24.30% | 23.50% | Strong - top 7% | 131 | | Power density | 243.4 | 235.2 | Strong - top 2% | 131 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight (kg) | 21.0 kg | 23.5 kg | Strong - top 6% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 24.30% | 23.50% | Strong - top 7% | 131 | | Power density | 243.4 | 235.2 | Strong - top 2% | 131 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight per kWp | 43.3 | 48.0 | Strong - top 6% | 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 131st in the whole database. - **43.3 kg per kWp** - Top 6% of the Back Contact 450-500 W segment, against a median of 48.0. Ranked 287th in the whole database. - **24.30% module efficiency** - Top 7% of the Back Contact 450-500 W segment, against a median of 23.50%. Ranked 131st 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 | 131 of 14005 | | Power density | 131 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 287 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Peak Efficiency of 24.3% – Back Contact Class** - Back Contact technology relocates all metallic contacts to the rear of the cell, eliminating front-side grid shading and achieving up to 24.3% module efficiency. This result is on par with the Jinko Tiger Neo III 48QL6-DB (24.27%) — the leading commercial TOPCon module in this format. For a 20 m² roof, this translates to a realistic 5–10% increase in annual energy yield compared to standard PERC modules (~20% efficiency). - **Low Temperature Coefficient — Back Contact Architecture** - Back Contact cells exhibit a temperature coefficient of approximately –0.26%/°C (confirmed by Gokin for the GK-3-54HGFb series, which shares an identical architecture), whereas standard TOPCon modules typically range from –0.28 to –0.30%/°C. At a module temperature of 70°C — typical for a Polish summer — the GK-5-54HG loses approximately 11.7% of its rated power relative to STC, compared to roughly 12.6% for a comparable TOPCon module; the difference accumulates meaningfully over July and August. - **30-Year Linear Power Warranty** - The manufacturer provides a 30-year linear power output warranty alongside a 15-year product warranty. Peer comparables ZNShine ZXM7-UHLD120 and Emmvee TITANIUM BLACK offer equivalent warranty periods; however, Jinko's Tier-1 standing provides stronger financial backing. The extended warranty term is well-suited to prosumer installations financed through 15–25-year loan agreements. - **Compact 54-Cell Format** - The 54-cell format yields a smaller module footprint (~1.8 × 1.1 m, estimated 21–22 kg) compared to standard 60- and 72-cell competitors. This facilitates installation on complex roof geometries, dormers, and smaller roof sections without the need for field cutting — a meaningful advantage in residential retrofit projects. - **Strategic Partnership with AIKO — Back Contact Technology Leader** - In April 2026, Gokin Solar announced a deepened strategic partnership with AIKO, a Back Contact cell manufacturer widely recognized as the technology leader in this segment (AIKO regularly sets BC efficiency records exceeding 25%). Access to AIKO cells reduces the supply quality degradation risk that is characteristic of smaller manufacturers operating independently of Tier-1 supply chains. ## Cons - **No BNEF Tier-1 Status** - Gokin Solar does not appear on the BNEF Tier-1 Bankable Manufacturers list (Q1 2026). Unlike peer comparable Jinko Solar — a long-standing Tier-1 manufacturer — the absence of Tier-1 status may complicate access to project finance for commercial installations and utility-scale PV plants; some insurers also apply higher premiums or decline coverage for modules from manufacturers outside the list. - **Limited Differentiation at Lower Wattage Bins** - The lowest-wattage variant at 445 Wp achieves 22.3% efficiency — only 0.1 percentage points above peer ZNShine ZXM7-UHLD120 (22.47% max) and Emmvee (22.4% max), both of which are based on less costly TOPCon/monofacial technology. If the Back Contact architecture commands a price premium, the lower GK-5-54HG bins deliver a disproportionately small efficiency gain relative to the added cost. - **Monofacial Only — No Bifacial Option** - The GK-5-54HG series is monofacial (is\_bifacial: false), precluding any energy gain from ground-reflected irradiance. Bifacial TOPCon modules in this power class — such as the Jinko Tiger Neo III 48QL6-DB — generate 5–15% additional energy on installations with high-albedo surfaces (gravel, snow, light-colored roofing membrane), which on a 10 kWp system can represent 300–700 kWh/year of lost yield relative to a bifacial competitor. ## About this series The Gokin GK-5-54HG series of photovoltaic panels utilizes advanced **N-type TOPCon cell technology**, which allows for significantly higher efficiency than traditional P-type modules. Thanks to the **bifacial double-glass design**, these panels are able to absorb light reflected from the ground, which directly translates into higher annual energy yields, even in lower sunlight conditions. The use of double glass solves the problem of micro-cracks and cell corrosion, which significantly extends the lifespan of the entire installation and ensures investment security for years. This series stands out with a **low power degradation rate**, meaning that the modules maintain nearly nominal performance for a very long time. Gokin GK-5-54HG is a solution dedicated primarily to demanding residential installations and large PV farms, where maximizing production from every square meter is key. Compared to standard competitors, this series offers **better thermal stability**, operating more efficiently during summer heat. The compact 54-cell format makes the modules lightweight and handy, which facilitates logistics and installation on roofs with complex geometry, without losing strength parameters. This is a substantive choice for professionals who prioritize **innovation and durability of photovoltaic components**. ## Notable figures - Efficiency of 24.3% is 0.8pp above the \*\*Back Contact 450-500W\*\* median (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 - 21.0 kg weight - 2.5 kg lighter than \*\*Back Contact 450-500W\*\* median (23.5 kg), reducing installation effort - In the top 1% for efficiency among all Back Contact panels ## Questions ### How does the Back Contact technology in Gokin GK-5-54HG panels differ from standard PERC or TOPCon cells? In Back Contact cells, all current-collecting metal electrodes are routed to the rear side of the module. As a result, the entire front surface of the cell remains active and loses no energy to shading from metal busbars or fingers. This yields higher module efficiency than conventional PERC cells at the same footprint, improved aesthetics, and reduced sensitivity to partial shading caused by rooftop obstructions. ### What is the peak power output of the Gokin GK-5-54HG panel, and how many cells does the module contain? The Gokin GK-5-54HG series achieves a peak power output of up to 485 Wp. The module is built with 54 cells, resulting in a more compact form factor compared to the widely used 60-cell or 72-cell formats. This makes the panel lighter and easier to handle during logistics and installation, while still delivering the high power density characteristic of Back Contact technology. ### What warranty does the manufacturer provide on the Gokin GK-5-54HG panel series? Gokin offers a 15-year product warranty on the GK-5-54HG series, covering material defects and workmanship. In addition, the manufacturer provides a 30-year linear power output warranty, guaranteeing that the modules retain a specified minimum percentage of their nominal rated power over three decades of operation. Such an extended power warranty is a compelling argument when calculating the return on investment for a photovoltaic installation. ### Are the Gokin GK-5-54HG panels suitable for installation on a pitched roof of a residential building? Yes, the 54-cell format makes the GK-5-54HG modules exceptionally manageable — their reduced dimensions and relatively low weight simplify rooftop transport and installation on complex roof sections featuring dormers or chimneys. The absence of front-side electrodes inherent to Back Contact technology also minimizes the risk of shading from rooftop elements, which is a significant advantage for prosumer PV installations. ### How do the Gokin GK-5-54HG panels perform under overcast conditions and on low-irradiance days? Back Contact cells exhibit a strong response to diffuse solar irradiance, translating into higher energy yields under the overcast conditions typical of the Central European climate. The absence of metal busbars and fingers on the front cell surface improves light absorption even at low angles of incidence. The GK-5-54HG series therefore maintains relatively stable energy production throughout most of the year, not only on clear summer days. ### Is Gokin a Tier 1 manufacturer, and is the GK-5-54HG panel series worth purchasing? Gokin does not currently appear on Tier 1 manufacturer lists compiled by financial rating agencies, which reflects a shorter financial history and a more limited market track record compared to industry leaders. Nevertheless, the GK-5-54HG series offers modern Back Contact technology, 485 Wp of peak power, and a 30-year linear power warranty. It represents a sound choice for installers seeking advanced cell technology at a lower price point, provided that the distributor's credibility and the specific warranty terms are thoroughly verified before purchase. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/GK-5-54HG_EN-202504-V01-9d2cea9f8eb9.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 | | [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-5-54hg-485m 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.