--- title: "ZNShine ZXM7-UHLDD120-460W 460W Solar Panel - Specs & Review | ComparePV" description: "ZNShine ZXM7-UHLDD120-460W 460W solar panel. Specs: 21.32% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/znshine-zxm7-uhldd120-460w" updated: 2026-09-11 --- # ZNShine ZXM7-UHLDD120-460W Middle of its segment, modest efficiency 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** ZNShine - **Model:** ZXM7-UHLDD120-460W - **Series:** ZXM7-UHLDD120 Series - **Rated power:** 460 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) | 460 W | 465 W | Typical | | | Module efficiency | 21.32% | 22.52% | Weak - bottom 4% | 8,485 | | Power density | 213.2 | 225.2 | Weak - bottom 4% | 8,451 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight (kg) | 26.5 kg | 24.0 kg | Weak - bottom 5% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.32% | 22.52% | Weak - bottom 4% | 8,485 | | Power density | 213.2 | 225.2 | Weak - bottom 4% | 8,451 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight per kWp | 57.6 | 52.2 | Weak - bottom 5% | 11,309 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.32% module efficiency** - Bottom 4% of the TOPCon 450-500 W segment, against a median of 22.52%. Ranked 8,485th in the whole database. - **213.2 watts per square metre** - Bottom 4% of the TOPCon 450-500 W segment, against a median of 225.2. Ranked 8,451st in the whole database. - **57.6 kg per kWp** - Bottom 5% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 11,309th in the whole database. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 460 W - **Efficiency:** 21.32 % - **Voltage at Pmax (Vmp):** 34.70 V - **Current at Pmax (Imp):** 13.26 A - **Open-circuit voltage (Voc):** 42.00 V - **Short-circuit current (Isc):** 14.03 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:** 213.2 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:** 402 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8485 of 14005 | | Power density | 8451 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 11309 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 - At 21.3% efficiency, this panel is 1.2pp below the \*\*TOPCon 450-500W\*\* median of 22.5% - At 213.2 W/m², this panel generates 12.0 W/m² less per unit area than \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 450-500W\*\* median - At 26.5 kg, this panel is 2.5 kg heavier than the \*\*TOPCon 450-500W\*\* median (24.0 kg) - more demanding for installation crews - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces ## 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 | +50 W, cooler, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +45 W, cooler, +3.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +40 W, cooler, +3.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +40 W, lighter, +3.2 pp | | [ZNShine ZXM7-SHLDD120-440](https://comparepv.com/panel/znshine-zxm7-shldd120-440) | 440 W | -20 W, hotter, -0.9 pp | | [ZNShine ZXM7-SHLDD120-445](https://comparepv.com/panel/znshine-zxm7-shldd120-445) | 445 W | -15 W, hotter, -0.7 pp | | [ZNShine ZXM7-SHLDD120-450](https://comparepv.com/panel/znshine-zxm7-shldd120-450) | 450 W | -10 W, hotter, -0.5 pp | | [ZNShine ZXM7-SHLDD120-455](https://comparepv.com/panel/znshine-zxm7-shldd120-455) | 455 W | Hotter, -0.2 pp | | [ZNShine ZXM7-SHLDD120-465](https://comparepv.com/panel/znshine-zxm7-shldd120-465) | 465 W | Hotter, +0.2 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +100 W, cooler, +3.5 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +95 W, cooler, +3.3 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +90 W, lighter, +3.1 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +80 W, cooler, +3.1 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +80 W, cooler, +3.1 pp | --- Source: https://comparepv.com/panel/znshine-zxm7-uhldd120-460w 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.