--- title: "Suntech STP495S-H54-Nkh+ Solar Panel: Specs & Datasheet | ComparePV" description: "Suntech STP495S-H54-Nkh+ solar panel. Specs: 22.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/suntech-stp495s-h54-nkh" image: "https://comparepv.com/og/panel/suntech-stp495s-h54-nkh.png" updated: 2026-09-11 --- # Suntech STP495S-H54-Nkh+ Light for its output, no clear weak spot 1,096 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** Suntech - **Model:** STP495S-H54-Nkh+ - **Series:** Ultra V Pro mini (STPXXXS-H54-Nkh+) - **Rated power:** 495 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 450-500 W (1096 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 495 W | 465 W | Strong - top 4% | | | Module efficiency | 22.30% | 22.52% | Typical | 5,161 | | Power density | 222.6 | 225.2 | Typical | 5,584 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight (kg) | 23.5 kg | 24.0 kg | Strong - top 24% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.30% | 22.52% | Typical | 5,161 | | Power density | 222.6 | 225.2 | Typical | 5,584 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight per kWp | 47.5 | 52.2 | Strong - top 24% | 1,708 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **47.5 kg per kWp** - Top 24% of the TOPCon 450-500 W segment, against a median of 52.2. - **Best for:** Commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 495 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 33.10 V - **Current at Pmax (Imp):** 14.95 A - **Open-circuit voltage (Voc):** 39.91 V - **Short-circuit current (Isc):** 15.83 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 ### Physical - **Length:** 1961 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.5 kg - **Area:** 2.22 m2 - **Power density:** 222.6 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:** 433 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5161 of 14129 | | Power density | 5584 of 14129 | | Temperature coefficient | 2220 of 14129 | | Weight | 1708 of 14129 | | Warranty | 21 of 14129 | ## About this series Suntech Ultra V Pro mini series (STPXXXS-H54-Nkh+) are glass-glass modules designed to genuinely increase energy yield while simultaneously minimizing operational risks. The application of N-type TOPCon cells in half-cell technology helps maintain high efficiency across a wide range of operating conditions - including during overcast conditions, in the morning, and at night, when many standard panels significantly lose performance. This is a strong response to diffuse light conditions, particularly relevant in regions with significant reliance on such conditions for annual energy production. Compared to competitors, the series stands out due to meticulously refined structural details, such as multi-busbar technology, which enhances current collection and reliability, and robust environmental resistance (including resistance to salt fog and ammonia). For investors, this means fewer concerns about micro-cracks and more stable parameters over time, supported by a long linear power warranty. The Ultra V Pro mini will perform excellently in commercial and industrial installations, PV farms, and projects where high yield per square meter and reliable performance over years are key factors. ## Notable figures - At 22.3% efficiency, this panel is on par with typical \*\*TOPCon 450-500W\*\* modules - Power density of 222.6 W/m² matches the \*\*TOPCon 450-500W\*\* median - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 450-500W\*\* panels - Ranked #5161 out of 14129 panels for efficiency in the database ## Questions ### What is the maximum power output of the Suntech Ultra V Pro mini STPXXXS-H54-Nkh+ panel? Modules in the Ultra V Pro mini series reach up to 495 Wp of maximum power. This is achieved through N-type TOPCon half-cut cells combined with multi busbar technology, which together improve current collection efficiency and maintain high module performance despite a compact footprint compared to older panel generations. ### What warranty comes with the Suntech Ultra V Pro mini panels? The manufacturer provides a 15-year product warranty along with a 30-year linear power output warranty. This means the module retains a guaranteed percentage of its original power output over three decades, while manufacturing or material defects are covered during the first 15 years of operation. ### How does N-type TOPCon technology in the Ultra V Pro mini differ from standard P-type panels? N-type TOPCon cells exhibit lower light-induced degradation and better performance under high temperatures and low irradiance compared to traditional P-type PERC cells. In practice, this results in higher energy yields in the morning, evening, and on cloudy days-an important advantage in climates like Poland's, where diffuse light plays a significant role in annual energy balance. ### Are the Ultra V Pro mini panels bifacial? No, the Ultra V Pro mini series consists of monofacial modules built in a glass-glass configuration. While they don't generate power from the rear side, this construction offers greater resistance to microcracks, moisture, and corrosion compared to standard panels with a back sheet, resulting in more stable performance throughout the panel's lifespan. ### What types of installations are the Suntech Ultra V Pro mini panels best suited for? Thanks to their high per-unit power output of up to 495 Wp and strong environmental resistance-including to salt mist and ammonia-this series is primarily suited for commercial, industrial, and utility-scale PV farm installations, where maximizing energy yield per square meter of roof or ground space and ensuring predictable long-term performance are top priorities. ### Is Suntech a Tier 1 manufacturer, and where are the Ultra V Pro mini panels made? Yes, Suntech is classified as a Tier 1 manufacturer, meeting the highest bankability and financial stability criteria recognized by institutions financing PV projects. The company is headquartered in China and is one of the most recognized global suppliers of photovoltaic modules with decades of manufacturing experience. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/stp495-515s-h54-nkh-en-88245f3b1679.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +15 W, cooler, +2.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +10 W, cooler, +2.4 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Cooler, heavier, +2.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +2.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +2.2 pp | | [Suntech STP490S-H54-Nfb+](https://comparepv.com/panel/suntech-stp490s-h54-nfb) | 490 W | -0.3 pp | | [Suntech STP500S-H54-Nfb+](https://comparepv.com/panel/suntech-stp500s-h54-nfb) | 500 W | Very close match | | [Suntech STP505S-H54-Nfb+](https://comparepv.com/panel/suntech-stp505s-h54-nfb) | 505 W | +10 W, +0.4 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +65 W, cooler, +2.5 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +60 W, cooler, +2.3 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +55 W, lighter, +2.1 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +45 W, cooler, +2.1 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +45 W, cooler, +2.1 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +50 W, heavier, +2.0 pp | --- Source: https://comparepv.com/panel/suntech-stp495s-h54-nkh 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.