--- title: "Gokin GK-3-54HGb-495M 495W Solar Panel - Specs & Review | ComparePV" description: "Gokin GK-3-54HGb-495M 495W solar panel. Specs: 24.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gokin-gk-3-54hgb-495m" updated: 2026-09-11 --- # Gokin GK-3-54HGb-495M Light for its output, no clear weak spot 156 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** Gokin - **Model:** GK-3-54HGb-495M - **Series:** GK-3-54HGb - **Rated power:** 495 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) | 495 W | 475 W | Strong - top 3% | | | Module efficiency | 24.30% | 23.50% | Strong - top 7% | 131 | | Power density | 242.5 | 235.2 | Strong - top 11% | 159 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight (kg) | 21.4 kg | 23.5 kg | Strong - top 4% | | | 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 | 242.5 | 235.2 | Strong - top 11% | 159 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight per kWp | 43.2 | 48.0 | Strong - top 4% | 281 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **43.2 kg per kWp** - Top 4% of the Back Contact 450-500 W segment, against a median of 48.0. Ranked 281st 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. - **242.5 watts per square metre** - Top 11% of the Back Contact 450-500 W segment, against a median of 235.2. - **Best for:** Residential, commercial and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 495 W - **Efficiency:** 24.30 % - **Voltage at Pmax (Vmp):** 33.98 V - **Current at Pmax (Imp):** 14.58 A - **Open-circuit voltage (Voc):** 41.07 V - **Short-circuit current (Isc):** 15.21 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:** 242.5 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:** 440 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 131 of 14005 | | Power density | 159 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 281 of 14005 | | Warranty | 21 of 14005 | ## Pros - **23–24.5% Efficiency – Highest in Segment** - All three comparable series top out at 22.26% (Techwise TW-500HT-06), while Emmvee and Lina Energy plateau at approximately 21%. Gokin outperforms its closest peer by more than 2 percentage points—at a 10 kWp installation, that translates to achieving the same output on roughly 0.8–1 m² less roof area. - **Back Contact Architecture – Greater Active Cell Area** - Relocating all busbars to the rear of the cell eliminates shading from metallic contact fingers and increases the light-absorbing active area by approximately 1.1% compared to conventional modules. According to Gokin Solar data (PV Magazine, December 2025), BC modules in the GK-3 series deliver up to 30 W more than comparably sized TOPCon modules with identical dimensions. - **Low Temperature Coefficient of −0.26%/°C** - Standard PERC modules typically yield −0.35%/°C, and TOPCon modules approximately −0.30%/°C. At a module temperature of 70°C—typical on a summer day in Poland—the power loss advantage over PERC amounts to roughly 1.6 percentage points, translating to a measurably higher annual energy yield during summer months. - **TÜV Rheinland Certifications IEC 61215:2021 and IEC 61730:2023** - Independent quality and safety validation by a recognized notified body confirms compliance with current industry standards—a requirement of many renewable energy subsidy programs and solar installation insurers. - **30-Year Linear Power Warranty** - Annual degradation is capped at 0.35% after the first year of operation—on par with premium manufacturers such as Jinko and Trina, and superior to peers Emmvee and Lina Energy, neither of which publicly documents a 30-year linear warranty commitment. ## Cons - **15-Year Product Warranty – 10 Years Below Industry Standard** - Leading manufacturers (LONGi, Jinko Solar, Trina Solar) provide 25-year workmanship warranties covering physical defects. The Gokin GK-3-54HGb's 15-year product warranty leaves the last 15 years of the planned 30-year operational life without manufacturer material coverage, increasing the potential risk of out-of-pocket repair or replacement costs. - **Not Listed as BNEF Tier-1 Bankable** - Gokin does not appear on the BNEF Q1 2026 Tier-1 list (tier\_1\_bankable: false in manufacturer data). This may represent a formal barrier when seeking project financing or when selling installations to infrastructure funds and leasing companies that require modules sourced from a bankable manufacturer. - **Limited Market Track Record (Founded 2019)** - Given a 30-year installation horizon, Gokin Solar's approximately six years of operational history does not allow empirical verification of the claimed long-term durability of its BC cells or the continuity of warranty service. By comparison, LONGi has been operating since 2000 and Jinko Solar since 2006. ## About this series The Gokin GK-3-54HGb solar panel series is an advanced solution based on **N-type TOPCon technology**, which redefines performance standards in difficult lighting conditions. Thanks to the bifacial glass-glass construction, these modules not only exhibit increased mechanical resistance but, above all, generate additional energy yield from reflected radiation. The problem of rapid power degradation and performance drops at high temperatures is eliminated here through **low temperature coefficients** and better stability of N-type cells. The use of a **bifacial structure** makes these panels an ideal choice for ground-mounted installations and modern carports, where every additional kilowatt of energy is crucial for the profitability of the investment. Gokin GK-3-54HGb stands out from the competition with **exceptional Dual Glass durability**, which significantly extends the system's lifespan and protects the cells against micro-cracks or chemical corrosion. This product is aimed at investors looking for maximum reliability and a quick return on capital in demanding commercial and domestic projects. The aesthetic finish and **high power density** allow for the efficient use of limited roof space while maintaining the highest technical parameters for decades of operation. ## Notable figures - 24.3% module efficiency - 0.8pp better than the \*\*Back Contact 450-500W\*\* median of 23.5% - 242.5 W/m² power density - 7.3 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 - 21.4 kg weight - 2.1 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 ### What is Back Contact technology in the Gokin GK-3-54HGb panels and how does it differ from TOPCon? In Back Contact (BC) cells, all metal electrical contacts are relocated to the rear side of the cell, allowing the entire front surface to absorb light without shading losses from electrodes. This is a premium technology achieving efficiencies of up to 24.5%, which is higher than typical TOPCon modules. The Gokin GK-3-54HGb is built on N-type BC cells, resulting in superior energy yield per unit of available roof area. ### What warranty is offered on the Gokin GK-3-54HGb panels? The GK-3-54HGb series comes with a 15-year product warranty covering material and manufacturing defects, as well as a 30-year linear power output warranty. This means the manufacturer guarantees a specified minimum energy yield over three decades — a standard for modules in this class — providing reliable predictability of return on investment. ### What is the wattage of the Gokin GK-3-54HGb panels and is it sufficient for a typical residential installation? The module's peak power output is 500 Wp at an efficiency of up to 24.5%. For a typical single-family home consuming 4,000–5,000 kWh per year, 8–10 of these panels are sufficient, occupying significantly less roof space than older technologies. The high power density makes this series particularly cost-effective when available roof area is limited. ### How do the Gokin GK-3-54HGb panels perform in summer under high-temperature conditions? The GK-3-54HGb modules have a temperature coefficient of -0.26%/°C, which is among the best figures available on the market. This means that even at a cell surface temperature of 70°C, power losses are significantly lower than those of older PERC modules. The operating temperature range spans from -40°C to +85°C, making these panels resilient to both harsh winters and scorching summers. ### Are the Gokin GK-3-54HGb panels resistant to hail and high winds? Yes, the GK-3-54HGb series is certified for a static mechanical load of 5,400 Pa on the front side and 2,400 Pa on the rear side, corresponding to very strong wind loads. Hail resistance is tested using ice balls 25 mm in diameter at an impact velocity of 23 m/s. The junction box carries an IP68 ingress protection rating, safeguarding the electronics against moisture ingress. ### Gokin is not a Tier 1 manufacturer — is it still worth purchasing the GK-3-54HGb panels? The absence of Tier 1 status means that Gokin has not been assessed by major financial agencies as a bankable guarantor for project financing; however, this does not necessarily reflect the quality of the product itself. The GK-3-54HGb panels carry CE certification, and the series is based on N-type Back Contact cells with verified performance characteristics. It is essential to verify the current financial standing of the distributor and the warranty fulfillment terms before purchasing. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/GK-3-54HGb_470-500_EN-202505-V0111-3954d3585384.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, heavier, +0.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +0.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, 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 | Cooler, heavier | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Very close match | | [Gokin GK-3-54HGb-470M](https://comparepv.com/panel/gokin-gk-3-54hgb-470m) | 470 W | -25 W, -1.3 pp | | [Gokin GK-3-54HGb-475M](https://comparepv.com/panel/gokin-gk-3-54hgb-475m) | 475 W | -20 W, -1.0 pp | | [Gokin GK-3-54HGb-480M](https://comparepv.com/panel/gokin-gk-3-54hgb-480m) | 480 W | -15 W, -0.8 pp | | [Gokin GK-3-54HGb-485M](https://comparepv.com/panel/gokin-gk-3-54hgb-485m) | 485 W | -10 W, -0.5 pp | | [Gokin GK-3-54HGb-490M](https://comparepv.com/panel/gokin-gk-3-54hgb-490m) | 490 W | -0.3 pp | --- Source: https://comparepv.com/panel/gokin-gk-3-54hgb-495m 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.