--- title: "DAH Solar DHN-48Z16/DG-425 425W Solar Panel - Specs & Review | ComparePV" description: "DAH Solar DHN-48Z16/DG-425 425W solar panel. Specs: 21.27% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dah-dhn-48z16-dg-425" updated: 2026-09-11 --- # DAH Solar DHN-48Z16/DG-425 Middle of its segment, modest efficiency 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** DAH Solar - **Model:** DHN-48Z16/DG-425 - **Series:** DHN-48Z16/DG (425–455W) - **Rated power:** 425 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 425 W | 435 W | Typical | | | Module efficiency | 21.27% | 22.00% | Weak - bottom 10% | 8,849 | | Power density | 212.7 | 220.2 | Weak - bottom 13% | 8,733 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 23.9 kg | 22.0 kg | Weak - bottom 21% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.27% | 22.00% | Weak - bottom 10% | 8,849 | | Power density | 212.7 | 220.2 | Weak - bottom 13% | 8,733 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 56.2 | 51.4 | Weak - bottom 21% | 10,505 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.27% module efficiency** - Bottom 10% of the TOPCon 400-450 W segment, against a median of 22.00%. - **212.7 watts per square metre** - Bottom 13% of the TOPCon 400-450 W segment, against a median of 220.2. - **56.2 kg per kWp** - Bottom 21% of the TOPCon 400-450 W segment, against a median of 51.4. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 425 W - **Efficiency:** 21.27 % - **Voltage at Pmax (Vmp):** 29.60 V - **Current at Pmax (Imp):** 14.36 A - **Open-circuit voltage (Voc):** 35.00 V - **Short-circuit current (Isc):** 15.34 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:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 96 - **Bifacial:** yes ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.9 kg - **Area:** 2.00 m2 - **Power density:** 212.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **Output after 30 years:** 371 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8849 of 14005 | | Power density | 8733 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 10505 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Low temperature coefficient of -0.29%/°C** - N-type TOPCon technology delivers a power temperature coefficient of -0.29%/°C, compared to the typical -0.35%/°C of standard PERC cells. This translates into measurably higher energy yield during summer and on heat-soaked rooftops — representing roughly 17% fewer thermal losses at 70°C. - **30-year linear power warranty** - The manufacturer guarantees ≥87.4% power retention after 30 years of operation, while the market standard remains 25 years. This distinction is significant in LCOE calculations for institutional investors and debt-financed PV installations. - **BNEF Tier 1 — bankability confirmed** - DAH Solar has maintained BNEF Tier 1 status for multiple consecutive quarters (confirmed Q1 2025 and Q4 2025), demonstrating eligibility for bank-financed projects. For commercial installations and utility-scale PV farms, this designation is a prerequisite when seeking third-party project financing. - **Efficiency up to 22.77% — top-tier segment** - The highest-performing variant in the series reaches 22.77% efficiency, placing it on par with direct competitors (Sunlike Solar SKT420~455M10-108D6: 22.8%, IBC Module LS-TA2: 22.8%) and well above the Waaree ARKA (20.93%). This high power density reduces the roof or ground area required for a given system capacity. - **7 variants — configuration flexibility** - The series spans 7 color and construction variants (including BW, BB, RR, MM, and FS), enabling the module to be matched to a building's aesthetic requirements or the demands of a specific installation type — pitched roof, façade, or ground-mount — without compromising technical specifications. ## Cons - **Bifaciality factor of 80%** - The stated bifaciality factor of 80% is a typical value for the class; however, select competing TOPCon modules in this power range — such as the JA Solar DeepBlue 4.0 Pro premium line — offer up to 85%. In an optimized ground-mount installation with a high-albedo surface, this results in approximately 3–5% lower rear-side energy gain. ## About this series The DAH DHN-48Z16/DG series (425-455W) are modules designed for maximum operational stability in real-world conditions, where performance is not just about the figures in the catalog, but also about predictable yields over the years. The use of **N-type TOPCon cells** helps to minimize performance degradation over time and maintain high efficiency even at higher temperatures, which is particularly important on heated roofs. The **glass-glass** construction increases resistance to moisture and stress, reducing the risk of microcracks and operational problems in more challenging locations. Thanks to **bifacial technology**, the module can also utilize reflected light from the ground - this is a real advantage on bright roofs, on the ground, and in installations on facades. Meanwhile, **SMBB** improves current transport within the module and supports uniform operation across the entire surface. This makes it a good choice for installers and investors who want to combine aesthetics, durability, and high yields in residential and commercial projects. ## Notable figures - Module efficiency of 21.3% is 0.7pp below average for \*\*TOPCon 400-450W\*\* panels (median: 22.0%) - At 212.7 W/m², this panel generates 7.5 W/m² less per unit area than \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 400-450W\*\* median - At 23.9 kg (1.9 kg above \*\*TOPCon 400-450W\*\* median of 22.0 kg), requires checking roof load capacity - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What warranty does the DAH Solar DHN-48Z16/DG series carry and what does it cover? The DHN-48Z16/DG series comes with a 25-year product warranty covering materials and workmanship, as well as a 30-year linear power output warranty. After 25 years, the manufacturer guarantees at least 89.4% of nominal power, and after 30 years at least 87.4%. This is one of the longest power warranties currently available on the market, ensuring predictable energy yields over three decades with no risk of sudden degradation. ### Will the DAH Solar DHN-48Z16/DG modules perform well in summer when the roof gets very hot? Yes. The N-type TOPCon cells used in this series have a power temperature coefficient of just -0.29%/°C, which is among the best figures in this product class. By comparison, older PERC modules typically lose around -0.35%/°C. In practice, this means that under intense solar irradiance and high roof temperatures, the DHN-48Z16/DG panels deliver noticeably more energy than average P-type modules. ### What does the bifacial technology in the DAH Solar DHN-48Z16/DG series offer, and when does it truly pay off? Bifaciality means the module generates power from both sides: the front face captures direct solar irradiance, while the rear face harvests light reflected from the ground surface (albedo). The bifaciality factor of this series reaches up to 80%. The greatest gain is achieved on light-colored roofing surfaces (light gray membranes, white gravel ballast), ground-mounted systems, and facade installations. On a typical dark roof tile, the effect will be smaller but still measurable. ### Why does the DHN-48Z16/DG series use a glass-glass construction, and does it not add too much weight? The dual-glass design — replacing the conventional backsheet with a rear glass pane — significantly improves resistance to moisture ingress, mechanical stress, and the risk of cell microcracks, resulting in a longer module service life. The panel weighs 23.9 kg, only marginally more than a comparable single-glass module of similar wattage. For the vast majority of standard racking systems this poses no issue, though it is advisable to confirm that the mounting substructure is rated for this weight. ### What is the maximum power output of the DAH Solar DHN-48Z16/DG panel and what is its efficiency? The highest power variant in this series is 455 Wp. Module efficiency ranges from 21.27% to 22.77% depending on the power bin, placing it in the upper tier of residential and commercial modules in the 1762×1134 mm format. The power tolerance is +5%, guaranteeing that each panel will meet or exceed its declared nameplate rating. ### Is DAH Solar a reliable manufacturer, and where are the DHN-48Z16/DG panels produced? DAH Solar is a Chinese manufacturer classified as Tier-1 by Bloomberg NEF, which reflects a documented financial and manufacturing capacity as well as an established presence in global markets. The company supplies modules to installations across Europe, Asia, and North America. Tier-1 status is not a quality rating per se, but rather a measure of bankability — it facilitates project financing by lending institutions for larger-scale PV projects. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/en-dhn-48z16-dg-425-455w-d2f7953189e8.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +50 W, +2.7 pp, +10 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +40 W, lighter, +2.5 pp | | [JA Solar JAT54S40-475/LR](https://comparepv.com/panel/ja-solar-jat54s40-475-lr) | 475 W | +50 W, lighter, +2.5 pp | | [Tongwei TWMNH-48HW475](https://comparepv.com/panel/tongwei-solar-twmnh-48hw475) | 475 W | +50 W, +2.5 pp | | [Astronergy CHSM48RN(DG)/F-BH-475](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm48rn-dg-f-bh-475) | 475 W | +50 W, +2.5 pp | | [AIKO AIKO-A475-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a475-mce54mw) | 475 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A475-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a475-mah54mw) | 475 W | +50 W, cooler, +2.5 pp | | [DAH Solar DHN-48Z16/DG(RR)-380W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-380w) | 380 W | -45 W, -2.2 pp | | [DAH Solar DHN-48Z16/DG(RR)-385W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-385w) | 385 W | -40 W, -2.0 pp | | [DAH Solar DHN-48Z16/DG(RR)-390W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-390w) | 390 W | -35 W, -1.8 pp | | [DAH Solar DHN-48Z16/DG(RR)-395W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-395w) | 395 W | -30 W, -1.5 pp | | [DAH Solar DHN-48Z16/DG(RR)-400W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-400w) | 400 W | -25 W, -1.2 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +85 W, cooler, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +70 W, cooler, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +80 W, cooler, +3.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +65 W, cooler, +3.2 pp | --- Source: https://comparepv.com/panel/dah-dhn-48z16-dg-425 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.