--- title: "ZNShine ZXM7-UHLDD120-475W 475W Solar Panel - Specs & Review | ComparePV" description: "ZNShine ZXM7-UHLDD120-475W 475W solar panel. Specs: 22.01% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/znshine-zxm7-uhldd120-475w" updated: 2026-09-11 --- # ZNShine ZXM7-UHLDD120-475W Middle of its segment, heavy for its output 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** ZNShine - **Model:** ZXM7-UHLDD120-475W - **Series:** ZXM7-UHLDD120 Series - **Rated power:** 475 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 475 W | 465 W | Typical | | | Module efficiency | 22.01% | 22.52% | Weak - bottom 19% | 6,491 | | Power density | 220.1 | 225.2 | Weak - bottom 18% | 6,632 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight (kg) | 26.5 kg | 24.0 kg | Weak - bottom 9% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.01% | 22.52% | Weak - bottom 19% | 6,491 | | Power density | 220.1 | 225.2 | Weak - bottom 18% | 6,632 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight per kWp | 55.8 | 52.2 | Weak - bottom 9% | 10,163 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **55.8 kg per kWp** - Bottom 9% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 10,163rd in the whole database. - **220.1 watts per square metre** - Bottom 18% of the TOPCon 450-500 W segment, against a median of 225.2. - **22.01% module efficiency** - Bottom 19% of the TOPCon 450-500 W segment, against a median of 22.52%. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Weight-limited structures, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 475 W - **Efficiency:** 22.01 % - **Voltage at Pmax (Vmp):** 35.30 V - **Current at Pmax (Imp):** 13.46 A - **Open-circuit voltage (Voc):** 42.60 V - **Short-circuit current (Isc):** 14.24 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1903 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.5 kg - **Area:** 2.16 m2 - **Power density:** 220.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 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:** 415 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6491 of 14005 | | Power density | 6632 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 10163 of 14005 | | Warranty | 21 of 14005 | ## About this series The ZNShine ZXM7-UHLDD120 series are **bifacial** modules featuring a **double glass** construction, designed to truly boost the yield not only from the front side but also from the reflected ground light. In practice, this means higher energy production on flat-roof installations with light membranes, carports, and ground-mounted systems where albedo is significant. The application of **N-type TOPCon cells** helps limit long-term losses and improves performance in poorer weather conditions - common in Poland's climate. As a result, this series performs well where stable annual performance matters more than just catalog parameters. It also operates better than many standard P-type modules due to its **PID resistance** and robust construction, ensuring reliability in demanding environments (humidity, temperature fluctuations, mechanical loads). This is the choice for commercial investors and prosumers who want to maximize the yield from the same surface area and minimize the risk of performance degradation over time. ## Notable figures - Module efficiency of 22.0% is 0.5pp below average for \*\*TOPCon 450-500W\*\* panels (median: 22.5%) - Power density of 220.1 W/m² is 5.1 W/m² below \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - needs more roof space - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 450-500W\*\* median - Weight of 26.5 kg is 2.5 kg above \*\*TOPCon 450-500W\*\* median (24.0 kg) - verify structural support - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What is the difference between ZNShine ZXM7-UHLDD120 bifacial modules and standard mono-facial panels? ZXM7-UHLDD120 series modules have active cells on both sides of the glass, capturing additional light reflected from the ground (roof, gravel, white membrane). In practice this delivers extra energy yield of several to over ten percent compared to a mono-facial panel of the same power, especially on flat roofs and ground-mount installations with a light-colored surface. ### What warranty comes with ZNShine ZXM7-UHLDD120 solar panels? The manufacturer covers the ZXM7-UHLDD120 series with a 12-year product warranty against material and workmanship defects, plus a 30-year linear power warranty guaranteeing a defined percentage of rated output over that period. This is standard for Tier 1 panels using N-type TOPCon cells and gives investors confidence in long-term system profitability. ### What is TOPCon technology and why is it better than standard P-type cells? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces light-induced degradation (LID) losses and performs better at higher temperatures and under weaker irradiance than typical P-type cells. In a module rated up to 485 Wp, this translates into higher efficiency and more stable annual yield, particularly relevant in climates with frequent diffuse light. ### Are ZNShine ZXM7-UHLDD120 panels suitable for flat roofs or carports? Yes, the bifacial, dual-glass construction is specifically designed for flat roofs with a light membrane, carports, and ground-mount installations, where the module can capture light reflected off the ground (albedo effect). To achieve a real production boost, modules are typically installed on racking with some clearance from the surface below. ### Are ZXM7-UHLDD120 series panels resistant to PID and moisture? Yes, the series has PID (Potential Induced Degradation) resistance, preventing power losses caused by leakage currents at high system voltages. The robust dual-glass build also protects the cells against moisture and fluctuating weather conditions, supporting stable performance throughout the warranty period. ### How much power do ZNShine ZXM7-UHLDD120 panels produce and how many are needed for a typical home system? Modules in this series reach up to 485 Wp of maximum power. For a typical residential system of 5-8 kWp, roughly 10 to 17 panels are needed, depending on the specific power variant and household energy demand. ZNShine is a Tier 1 manufacturer, which simplifies financing and insuring the installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ZXM7-UHLDD120-182-1903-1134-30-32NH-460-485W-350mm-20230120-bc1f7490e3bb.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +35 W, cooler, +3.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +30 W, cooler, +2.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +2.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +2.5 pp | | [ZNShine ZXM7-SHLDD120-440](https://comparepv.com/panel/znshine-zxm7-shldd120-440) | 440 W | -35 W, hotter, -1.6 pp | | [ZNShine ZXM7-SHLDD120-445](https://comparepv.com/panel/znshine-zxm7-shldd120-445) | 445 W | -30 W, hotter, -1.4 pp | | [ZNShine ZXM7-SHLDD120-450](https://comparepv.com/panel/znshine-zxm7-shldd120-450) | 450 W | -25 W, hotter, -1.2 pp | | [ZNShine ZXM7-SHLDD120-455](https://comparepv.com/panel/znshine-zxm7-shldd120-455) | 455 W | -20 W, hotter, -0.9 pp | | [ZNShine ZXM7-SHLDD120-460](https://comparepv.com/panel/znshine-zxm7-shldd120-460) | 460 W | -15 W, hotter, -0.7 pp | | [ZNShine ZXM7-SHLDD120-465](https://comparepv.com/panel/znshine-zxm7-shldd120-465) | 465 W | -10 W, hotter, -0.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +85 W, cooler, +2.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +80 W, cooler, +2.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +75 W, lighter, +2.4 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +65 W, cooler, +2.4 pp | --- Source: https://comparepv.com/panel/znshine-zxm7-uhldd120-475w 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.