--- title: "DAH Solar DHN-48Z16/DG 425W 425W Solar Panel - Specs & Review | ComparePV" description: "DAH Solar DHN-48Z16/DG 425W 425W solar panel. Specs: 21.27% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dah-dhn-48z16-dg-425w" updated: 2026-09-11 --- # DAH Solar DHN-48Z16/DG 425W Middle of its segment, modest efficiency 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** DAH Solar - **Model:** DHN-48Z16/DG 425W - **Series:** DHN-48Z16/DG - **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 and commercial. - **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 - **Bifacial gain:** 25.00 ### 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 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **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 (-0.29%/°C)** - The N-type TOPCon cells in this series exhibit a Pmax temperature coefficient of -0.29%/°C, meaningfully better than typical PERC modules (-0.34 to -0.36%/°C). At a roof operating temperature of 65°C, the difference versus PERC translates to approximately 2–3% higher output at peak generation. - **Patented Full-Screen Technology** - The frameless front construction eliminates the accumulation of dust, soiling, and water at the module edges — the primary cause of hotspots and localized power losses in conventional framed modules. DAH Solar claims a 6–15% increase in annual energy yield versus standard framed modules, with the greatest benefit on low-tilt roofs (\<15°). - **30-Year Linear Power Warranty (≥87.4%)** - The manufacturer guarantees at least 87.4% of nominal power after 30 years. By comparison, the Waaree ARKA offers only a 25-year power warranty, and typical Chinese Tier-1 modules top out at 25 years with degradation to ~84.8%, making DAH's warranty clearly superior in this respect. - **Bifacial Design + Double Glass Construction** - The dual-glass construction (in place of a rear backsheet) significantly improves resistance to moisture, ammonia, and UV radiation, resulting in lower long-term degradation rates. The bifacial design yields an additional 5–15% energy gain from ground-reflected irradiance (albedo), a measurable benefit for installations on light-colored or gravel rooftops. - **Confirmed BNEF Tier 1 – Q1 and Q4 2025** - DAH Solar maintains BNEF Tier 1 Bankable Manufacturer status continuously throughout 2025 (confirmed Q1 and Q4 2025) and ranked 9th in the TOP SOLAR MODULES ranking (September 2025). Bankability is critical for loan- or lease-financed installations and for insurance risk assessments. ## Cons - **Weight of 23.9 kg — Increased Structural Load** - The double glass construction results in a module weight of 23.9 kg, approximately 2–4 kg heavier than standard backsheet modules (~20–21 kg). For a 10 kWp system (approximately 22 modules), this adds up to ~85 kg of additional roof load, which may require a structural engineering assessment on older or lightweight roof structures. - **Frameless Mounting — Hardware Compatibility Requirements** - Full-Screen frameless variants require dedicated clamps designed for dual-glass modules; standard aluminum mid-clamps intended for framed modules are incompatible. This may limit contractor options or increase BoS (balance of system) costs by 5–15 PLN per module. ## About this series The DAH DHN-48Z16/DG photovoltaic panel series redefines efficiency standards through the use of patented **Full-Screen** technology, which completely eliminates the protruding frame at the module edges. This solution effectively solves the problem of dust, sediment, and water accumulation, which in traditional designs leads to power drops and the formation of harmful hot-spots. Thanks to the perfectly smooth surface, rainfall automatically removes contaminants, ensuring constant exposure of the cells to the sun without the need for frequent maintenance. These modules use advanced **N-type TOPCon** cells, which are characterized by higher efficiency and significantly lower degradation over time compared to standard P-type technologies. The use of **Double-Glass** construction additionally strengthens the module's resistance to external factors and moisture, extending its lifespan to the maximum. This series is primarily dedicated to homeowners and businesses that value **maximum maintenance-free operation** and high aesthetics of the installation, especially on roofs with a low tilt angle. Compared to the competition, the DAH DHN-48Z16/DG stands out with its unique design and realistically higher annual yields, resulting from better light permeability and the absence of losses caused by edge contamination. This is the choice for investors focusing on **technological advantage** and energy security for decades. ## Notable figures - Efficiency of 21.3% is 0.7pp below the \*\*TOPCon 400-450W\*\* median (22.0%) - Power density of 212.7 W/m² is 7.5 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - needs more roof space - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - At 23.9 kg, this panel is 1.9 kg heavier than the \*\*TOPCon 400-450W\*\* median (22.0 kg) - more demanding for installation crews - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What warranties apply to the DAH Solar DHN-48Z16/DG panels and what exactly do they cover? The DHN-48Z16/DG series comes with a 25-year product warranty covering material and workmanship defects, as well as a 30-year linear power output warranty. This means the manufacturer guarantees that the modules will maintain adequate efficiency for three decades, with an annual degradation rate after the first year of just 0.4%. This represents one of the longest warranty standards available in the market for both residential and commercial PV installations. ### What is the Full-Screen technology in the DAH DHN-48Z16/DG series and why does it matter for flat roofs? Full-Screen technology eliminates the protruding aluminum frame along the edges of the module entirely. On conventional panels, the frame acts as a barrier that traps dust, bird droppings, and water, eventually causing hot-spots and power losses. The perfectly flush edge profile of the DHN-48Z16/DG series allows rainwater to carry all contaminants off the surface naturally. This effect is especially pronounced on roofs with a tilt angle below 10 degrees, where traditional framed panels typically require regular manual cleaning. ### Are the DAH Solar DHN-48Z16/DG panels bifacial, and does bifaciality genuinely increase energy yield? Yes, the DHN-48Z16/DG series consists of bifacial modules with a bifaciality factor of up to 80%. The rear side generates additional energy from irradiance reflected off the ground, rooftop surface, or snow. In practice, on a high-albedo substrate or in a ground-mount installation with adequate mounting height, bifaciality can increase annual energy yield by several to over ten percent compared to standard monofacial modules of the same nameplate power rating. ### What power output does the DAH DHN-48Z16/DG series offer and what is the module efficiency? The DHN-48Z16/DG series is available in variants with power output up to 455 W in the standard version, while select variants — such as the Full Black edition — reach up to 465 W. The N-type TOPCon cell technology enables module efficiency approaching 23%, with top-tier versions exceeding that threshold. At dimensions of 1762 x 1134 x 30 mm and a weight of approximately 24 kg, the power-to-area ratio is significantly better than that of widely available P-type PERC modules. ### Why is Double-Glass construction used in the DHN-48Z16/DG series and how does it differ from a standard glass/EVA backsheet design? Double-Glass construction replaces the conventional EVA polymer backsheet with a second pane of glass. Glass is substantially more resistant to moisture ingress, UV radiation, acids, and salts than polymer backsheets, which directly results in lower degradation rates over the full 30-year service life of the installation. An additional benefit is greater mechanical resistance to snow and wind loads. This construction is also the essential enabler of bifacial performance, as the transparent rear glass pane allows light to reach the back surface of the cells rather than blocking it. ### Is DAH Solar a reputable manufacturer, and is the DHN-48Z16/DG series still available in Poland? DAH Solar holds Tier 1 manufacturer status, meaning it is classified by independent industry agencies as financially stable and producing high-quality modules. The DHN-48Z16/DG series is actively available on the Polish and broader European market through wholesale distributors. It is not a discontinued model — its availability is confirmed by its presence in the catalogs of leading PV wholesalers operating in Poland. ## 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-425w 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.