--- title: "ZNShine ZXM7-UHLDD144-555W 555W Solar Panel - Specs & Review | ComparePV" description: "ZNShine ZXM7-UHLDD144-555W 555W solar panel. Specs: 21.48% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/znshine-zxm7-uhldd144-555w" updated: 2026-09-11 --- # ZNShine ZXM7-UHLDD144-555W Middle of its segment, modest efficiency 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** ZNShine - **Model:** ZXM7-UHLDD144-555W - **Series:** ZXM7-UHLDD144 Series - **Rated power:** 555 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) | 555 W | 580 W | Weak - bottom 5% | | | Module efficiency | 21.48% | 22.44% | Weak - bottom 6% | 8,152 | | Power density | 214.8 | 224.4 | Weak - bottom 6% | 8,148 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight (kg) | 31.5 kg | 31.2 kg | Weak - bottom 12% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.48% | 22.44% | Weak - bottom 6% | 8,152 | | Power density | 214.8 | 224.4 | Weak - bottom 6% | 8,148 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 56.8 | 53.8 | Weak - bottom 12% | 10,838 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.48% module efficiency** - Bottom 6% of the TOPCon 550-600 W segment, against a median of 22.44%. Ranked 8,152nd in the whole database. - **214.8 watts per square metre** - Bottom 6% of the TOPCon 550-600 W segment, against a median of 224.4. Ranked 8,148th in the whole database. - **56.8 kg per kWp** - Bottom 12% of the TOPCon 550-600 W segment, against a median of 53.8. - **Best for:** Utility-scale, 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):** 555 W - **Efficiency:** 21.48 % - **Voltage at Pmax (Vmp):** 41.80 V - **Current at Pmax (Imp):** 13.28 A - **Open-circuit voltage (Voc):** 50.50 V - **Short-circuit current (Isc):** 14.05 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:** 144 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2279 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.5 kg - **Area:** 2.58 m2 - **Power density:** 214.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 485 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8152 of 14005 | | Power density | 8148 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 10838 of 14005 | | Warranty | 21 of 14005 | ## About this series The ZNShine ZXM7-UHLDD144 series was designed to maximize energy yield in real-world operating conditions - especially where every additional percent of production matters. The modules utilize **N-type TOPCon cells**, which perform well under weaker irradiance and help maintain stable system operation on cloudy days. The application of **bifacial glass-glass construction** enables energy harvesting from the rear side as well, translating to higher yields on the ground, trackers, and with a bright background. A key feature of this series is **half-cut and multi-string (SMBB/16BB) technology**, which minimizes resistive losses and improves partial shading tolerance - crucial for industrial installations and PV farms where conditions rarely are ideal. The modules are also designed for operation in harsher environments, offering **enhanced resistance to environmental factors** (e.g., moisture, dust, or salinity). This is a sensible choice for investors seeking reliable production, longevity, and lower energy costs over the long term. ## Notable figures - At 21.5% efficiency, this panel is 1.0pp below the \*\*TOPCon 550-600W\*\* median of 22.4% - Power density of 214.8 W/m² is 9.7 W/m² below \*\*TOPCon 550-600W\*\* median (224.4 W/m²) - needs more roof space - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 550-600W\*\* median - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces - #8152 for efficiency, #6093 for temperature performance out of 14005 panels ## Questions ### What is the maximum power output of ZNShine ZXM7-UHLDD144 panels? The ZXM7-UHLDD144 series reaches a maximum power output of up to 580 Wp. This is a high value for this module format, achieved thanks to N-type TOPCon cells combined with half-cut technology and multi-busbar interconnection (SMBB/16BB), which together reduce resistive losses and improve solar-to-electric conversion efficiency. ### How does the TOPCon technology in ZXM7-UHLDD144 differ from standard PERC cells? The N-type TOPCon cells used in this series show lower degradation over time and better performance under low-light conditions than standard P-type PERC cells. In practice, this means more stable energy production on cloudy days and higher annual yield, resulting in a shorter payback period for the investment. ### What warranty comes with ZNShine ZXM7-UHLDD144 panels? The manufacturer provides a 12-year product warranty and a 30-year linear power output warranty. Such terms are typical for modern TOPCon panels and reflect the manufacturer's confidence in the durability of N-type cells and the glass-glass construction used in this series. ### Are bifacial ZXM7-UHLDD144 panels worth it for ground-mounted and tracker systems? Yes, the bifacial glass-glass construction allows the module to capture additional reflected light through its rear side. This effect is most noticeable in ground-mounted installations, PV farms, and tracker-based systems, especially over bright or sandy ground, where the bifacial gain can add several percent to annual energy production. ### Are ZNShine ZXM7-UHLDD144 panels suitable for industrial installations with partial shading? Yes, the half-cut cell technology combined with multi-busbar interconnection (SMBB/16BB) reduces power losses under partial shading, for example from chimneys, antennas, or neighboring rows on PV farms. By splitting cells into smaller sections, shading on part of the module has a smaller impact on the output of the entire panel string. ### Is ZNShine a Tier 1 manufacturer, and where are ZXM7-UHLDD144 panels produced? ZNShine Solar holds Tier 1 manufacturer status, confirming the company's financial stability and experience in large-scale PV module production. Panels from the ZXM7-UHLDD144 series are manufactured in China, and their enhanced resistance to moisture, dust, and salt mist makes them suitable for installations in demanding climate conditions as well. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ZXM7-UHLDD144-182-2279-1134-30-32NH-555-580W-350mm-20230113-36efbd245b9c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.1 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, 15 kg lighter, +2.9 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +2.9 pp | | [ZNShine ZXM7-SHW144-520](https://comparepv.com/panel/znshine-zxm7-shw144-520) | 520 W | 18 kg lighter, -1.2 pp, -5 yr warranty | | [ZNShine ZXM7-SHW144-525](https://comparepv.com/panel/znshine-zxm7-shw144-525) | 525 W | Hotter, 18 kg lighter, -5 yr warranty | | [ZNShine ZXM7-SHW144-530](https://comparepv.com/panel/znshine-zxm7-shw144-530) | 530 W | Hotter, 18 kg lighter, -5 yr warranty | | [ZNShine ZXM7-SHLD144-530W](https://comparepv.com/panel/znshine-zxm7-shld144-530w) | 530 W | -25 W, hotter, -1.0 pp | | [ZNShine ZXM7-SHW144-535](https://comparepv.com/panel/znshine-zxm7-shw144-535) | 535 W | Hotter, 18 kg lighter, -5 yr warranty | | [ZNShine ZXM7-SHLD144-535W](https://comparepv.com/panel/znshine-zxm7-shld144-535w) | 535 W | -20 W, hotter, -0.8 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +95 W, lighter, +3.7 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +90 W, lighter, +3.5 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +85 W, lighter, +3.3 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +80 W, lighter, +3.1 pp | --- Source: https://comparepv.com/panel/znshine-zxm7-uhldd144-555w 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.