--- title: "GL Solar HY-NT10/72GDF-590W 590W Solar Panel - Specs & Review | ComparePV" description: "GL Solar HY-NT10/72GDF-590W 590W solar panel. Specs: 22.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gl-solar-hy-nt10-72gdf-590w" updated: 2026-09-11 --- # GL Solar HY-NT10/72GDF-590W Space saver, no clear weak spot 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** GL Solar - **Model:** HY-NT10/72GDF-590W - **Series:** HY-NT10/72GDF N-Type Bifacial Series - **Rated power:** 590 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 550-600 W (1018 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 590 W | 580 W | Strong - top 18% | | | Module efficiency | 22.80% | 22.44% | Strong - top 22% | 2,714 | | Power density | 228.4 | 224.4 | Strong - top 17% | 2,598 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 32.1 kg | 31.2 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.80% | 22.44% | Strong - top 22% | 2,714 | | Power density | 228.4 | 224.4 | Strong - top 17% | 2,598 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 54.4 | 53.8 | Typical | 8,715 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **228.4 watts per square metre** - Top 17% of the TOPCon 550-600 W segment, against a median of 224.4. - **22.80% module efficiency** - Top 22% of the TOPCon 550-600 W segment, against a median of 22.44%. - **Best for:** Utility-scale, commercial and floating. ## Specification ### Electrical - **Rated power (Pmax):** 590 W - **Efficiency:** 22.80 % - **Voltage at Pmax (Vmp):** 44.15 V - **Current at Pmax (Imp):** 13.37 A - **Open-circuit voltage (Voc):** 52.20 V - **Short-circuit current (Isc):** 14.13 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.043 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 32.1 kg - **Area:** 2.58 m2 - **Power density:** 228.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 516 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2714 of 14005 | | Power density | 2598 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 8715 of 14005 | | Warranty | 21 of 14005 | ## Pros - **22.8–23.6% efficiency: clear lead over peers** - The series achieves up to 23.6% module efficiency, compared to just 21.55–21.6% for direct peer comparables (GCL-M12/60GDF, Techwise Summit Series, Seraphim Seco — all rated to 610 Wp). This translates to approximately 8.4% less roof/deck area needed for the same rated power, a critical advantage in marine deployments with constrained mounting surfaces. - **N-type TOPCon: low Tcoef & LID immunity** - Temperature coefficient of Pmpp is -0.29%/°C versus a typical -0.34 to -0.40%/°C for PERC cells. In Mediterranean climates at 35°C above STC, this yields approximately 1.7% more hourly output compared to a PERC module of equal STC rating. N-type architecture also eliminates light-induced degradation (LID), keeping year-one degradation below 1%. - **Marine-certified: IEC 61701 + IP68** - The series has passed salt mist testing per IEC 61701 and ammonia resistance per IEC 62716, with an IP68-rated junction box — durability credentials not explicitly declared in peer-comparable datasheets. A bifaciality factor of 80±5% synergizes with water-surface reflectance, generating a realistically achievable 10–25% bifacial gain above a standard land-based installation. - **30-year linear power warranty ≥87.4%** - The manufacturer guarantees at least 87.4% of nameplate power after 30 years, matching the Jinko Solar Tiger Neo warranty (87.4%/30 yr) and exceeding the standard 25-year performance guarantees of most peer comparables in this power class. For a 1 MWp project, the additional five years of warranty coverage is a meaningful LCOE differentiator. - **SMBB 16BB + half-cut cells: lower resistive losses** - Super Multi Busbar technology (16 busbars) combined with non-destructive cutting reduces cell series resistance and micro-crack formation during handling and operation — particularly relevant under dynamic mechanical loading (wave motion, vibration) typical of marine and offshore environments. Micro-crack-induced power loss is estimated below 0.5% over the first 10 years. ## Cons - **BNEF Tier-1 status unconfirmed** - GL Solar does not appear in publicly available BNEF Tier-1 module manufacturer rankings (Q1 2026). For commercial projects exceeding 1 MWp seeking non-recourse bank financing, manufacturer bankability is a standard due-diligence requirement. This may create a barrier to entry into large utility-scale and commercial farm markets and could require additional financial guarantees or insurance instruments from the project developer. ## About this series The **HY-NT10/72GDF HT TOPCon Bifacial** series comprises photovoltaic modules engineered for the most demanding operating conditions - designed primarily for marine applications, where standard panels fail to withstand the test of time. Thanks to **N-Type TOPCon technology**, the cells feature significantly lower light-induced degradation (LID) and excellent performance under low irradiance, ensuring stable energy yields throughout the year, regardless of weather conditions. The **bifacial dual-sided design** effectively harnesses light reflected from the ground or water surface, tangibly increasing energy production without additional investment costs. **SMBB technology with non-destructive cutting** reduces internal current losses and minimizes the risk of microcracks, directly translating into a longer module lifespan. A key differentiator of the series is its **exceptional resistance to extreme environmental conditions** - wind, wave impact, salt fog, UV radiation, and moisture - confirmed by an IP68-rated junction box. The series performs excellently in offshore and coastal installations, as well as in large commercial and industrial ground-mounted farms, where reliability and low levelized cost of energy over decades of operation are essential. ## Notable figures - Efficiency of 22.8% matches the \*\*TOPCon 550-600W\*\* median - 228.4 W/m² power density - 4.0 W/m² more than \*\*TOPCon 550-600W\*\* median (224.4 W/m²), more power per roof area - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 550-600W\*\* panels - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface - #2714 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### What warranty does the GL Solar HY-NT10/72GDF series come with? GL Solar provides a 15-year product warranty covering manufacturing defects and a 30-year power output warranty guaranteeing at least 87.4% of rated power over three decades of operation. This is among the strongest warranty terms in the industrial PV module segment and reflects the long-term stability inherent to N-Type TOPCon cell technology. ### Are GL Solar HY-NT10/72GDF panels truly suitable for marine and offshore installations? Yes. The marine-grade variant of the HY-NT10/72GDF series features an IP68-rated junction box, providing full dust-tight protection and resistance to prolonged water immersion. The modules have been tested for salt mist corrosion, intense UV exposure, and dynamic wind and wave loads, complying with IEC 61215 and IEC 61730 standards. ### What is the maximum power output and efficiency of the GL Solar HY-NT10/72GDF panel? The top model in the series reaches 610 Wp peak power with module efficiency up to 23.6%. Each module contains 144 monocrystalline cells in a 6×24 configuration, measuring approximately 2279×1134×30 mm and weighing 32.1 kg. This high power density is made possible by N-Type TOPCon technology combined with a multi-busbar SMBB cell design. ### How does the N-Type TOPCon technology in the HY-NT10/72GDF series compare to standard PERC cells? N-Type TOPCon cells exhibit significantly lower light-induced degradation (LID) compared to P-Type PERC cells, resulting in more stable energy output throughout the warranty period and superior low-irradiance performance. The temperature coefficient of Pmax is only -0.29%/°C, meaning the panels retain more power on hot days relative to typical PERC modules. ### What real-world benefit does the bifacial design of the GL Solar HY-NT10/72GDF offer, and when does it make sense? The bifacial design, with a bifaciality factor up to 80±5%, allows the rear side of each module to harvest light reflected from the ground, water surface, or light-colored substrates. Typical energy yield gains range from 5–15% depending on the albedo of the surroundings. The effect is most pronounced in marine installations, over white gravel, or snow-covered ground, with no additional capital investment required. ### Is the GL Solar HY-NT10/72GDF series a good fit for large utility-scale ground-mount solar farms? Yes. The high per-module power of up to 610 Wp and low temperature coefficient result in a competitive LCOE for utility-scale projects. The large 144-cell format reduces the number of string connections and lowers overall BoS costs. The series carries IEC 61215 and IEC 61730 certifications, meeting the bankability requirements of most project finance institutions. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Datasheet-NT10-72GDF590-610W-HY-EN-V20250520-26c0ac6c30f2.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | -30 W, lighter, +2.0 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +50 W, lighter, +2.0 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | -35 W, lighter, +1.8 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +45 W, lighter, +1.8 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +40 W, cooler, +1.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | -40 W, 16 kg lighter, +1.6 pp | | [GL Solar HY-NT10/72GDF-595W](https://comparepv.com/panel/gl-solar-hy-nt10-72gdf-595w) | 595 W | Very close match | | [GL Solar HY-NT10/72GDF-600W](https://comparepv.com/panel/gl-solar-hy-nt10-72gdf-600w) | 600 W | +10 W, +0.4 pp | | [GL Solar HY-NT10/72GDF-605W](https://comparepv.com/panel/gl-solar-hy-nt10-72gdf-605w) | 605 W | +15 W, +0.6 pp | | [GL Solar HY-NT10/72GDF-610W](https://comparepv.com/panel/gl-solar-hy-nt10-72gdf-610w) | 610 W | +20 W, +0.8 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +60 W, lighter, +2.4 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +55 W, lighter, +2.2 pp | --- Source: https://comparepv.com/panel/gl-solar-hy-nt10-72gdf-590w Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.