--- title: "DAH Solar DHN-54Z16/DG-490W 490W Solar Panel - Specs & Review | ComparePV" description: "DAH Solar DHN-54Z16/DG-490W 490W solar panel. Specs: 22.02% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dah-dhn-54z16-dg-490w" updated: 2026-09-11 --- # DAH Solar DHN-54Z16/DG-490W Middle of its segment, needs the roof space 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** DAH Solar - **Model:** DHN-54Z16/DG-490W - **Series:** DHN-54Z16/DG 480~510W - **Rated power:** 490 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) | 490 W | 465 W | Strong - top 12% | | | Module efficiency | 22.02% | 22.52% | Weak - bottom 20% | 6,329 | | Power density | 220.2 | 225.2 | Weak - bottom 18% | 6,321 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 26.6 kg | 24.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.02% | 22.52% | Weak - bottom 20% | 6,329 | | Power density | 220.2 | 225.2 | Weak - bottom 18% | 6,321 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 54.3 | 52.2 | Typical | 8,524 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **220.2 watts per square metre** - Bottom 18% of the TOPCon 450-500 W segment, against a median of 225.2. - **22.02% module efficiency** - Bottom 20% of the TOPCon 450-500 W segment, against a median of 22.52%. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 490 W - **Efficiency:** 22.02 % - **Voltage at Pmax (Vmp):** 33.50 V - **Current at Pmax (Imp):** 14.63 A - **Open-circuit voltage (Voc):** 39.50 V - **Short-circuit current (Isc):** 15.58 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:** 108 - **Bifacial:** yes ### Physical - **Length:** 1962 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.6 kg - **Area:** 2.22 m2 - **Power density:** 220.2 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:** 428 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6329 of 14005 | | Power density | 6321 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 8524 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon + bifacial: real-world energy yield gains** - N-type TOPCon cells exhibit lower LID/LeTID degradation rates and better high-temperature performance than standard PERC. Combined with a bifacial construction, the module harvests additional energy from reflected irradiance (typical bifacial gain: +5–15%), delivering a measurable advantage in ground-mount installations and systems deployed over light-colored membranes. - **30-year linear power output warranty** - DAH guarantees linear power retention for 30 years — 5 years longer than the Trina Solar Vertex (25 years) in the same power class. The extended warranty horizon directly improves project bankability and reduces investment risk in ROI calculations. - **Dual-glass construction: 5,400 Pa mechanical resistance** - The double-glass design (replacing a conventional backsheet) raises snow load resistance to 5,400 Pa and wind load resistance to 2,400 Pa, eliminates moisture ingress responsible for PID, and significantly reduces the risk of microcracks. For rooftop installations in Central European climates (snow loads up to 2.5 kN/m²), this provides a meaningful structural safety margin. - **BNEF Tier 1 Q4 2025 — bankability confirmed** - DAH Solar has maintained BloombergNEF Tier 1 status continuously from at least Q1 2025 through Q4 2025, confirming the manufacturer's ability to secure project finance. For institutional investors and utility-scale PV farms, Tier 1 classification is a prerequisite when pursuing bank financing. - **SMBB — reduced sensitivity to microcracks** - The Super Multi Busbar architecture distributes current across a greater number of contact points, allowing the module to retain a higher percentage of its rated power even after cell microcracks develop. This is particularly relevant during transport of large-format modules and during installation on uneven substrates. ## Cons - **26.6 kg weight — a constraint for low load-bearing roofs** - The dual-glass construction raises module weight to 26.6 kg, approximately 15–20% more than a typical monofacial backsheet module (~22–24 kg) in the same power class. For dense array layouts on roofs with limited structural capacity (e.g., older metal roof tiles, precast concrete decks), a structural engineering review is required before specifying this series. ## About this series The DAH DHN-54Z16/DG series, with a power output of 480-510W, is designed to maximize energy yield in situations where every square meter of roof or ground space is valuable. A key advantage is the combination of **N-type TOPCon cell technology** with a **dual-glass construction**, which results in more stable performance over time and better resistance to environmental factors compared to many standard single-sided modules. Furthermore, the module is **bifacial**, meaning it can utilize reflected light from the ground - a real advantage for roofs, membranes, and ground-mounted installations. In practice, this series solves common problems faced by installers and investors: limited space, declining performance over time, and increased risk of mechanical damage. Thanks to the **SMBB (multi-busbar) connection architecture**, the module is better able to withstand microcracks and withstand loads. This is a good choice for premium home installations, commercial buildings, and PV farms, especially where durability, high power density, and predictable energy production are important. ## Notable figures - At 22.0% efficiency, this panel is on par with typical \*\*TOPCon 450-500W\*\* modules - Power density of 220.2 W/m² is 5.0 W/m² below \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - needs more roof space - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 450-500W\*\* panels - At 26.6 kg, this panel is 2.6 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 TOPCon technology used in the DAH Solar DHN-54Z16/DG series, and is the premium price really justified? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture featuring an additional passivation layer that minimizes electron recombination losses. In practice, this translates to higher module efficiency — the DHN-54Z16/DG series achieves approximately 22.9% — and a slower power degradation rate over time compared to conventional PERC cells. For the end investor, this means more kilowatt-hours generated from the same roof area over the full system lifetime. ### Are the DAH Solar DHN-54Z16/DG 510W modules suitable for installation on steep pitched roofs? Yes, although the physical dimensions and weight must be taken into account: the module measures approximately 1962×1134 mm and weighs approximately 26.6 kg. The dual-glass construction increases frame rigidity, which facilitates secure fastening on standard hook-based racking systems. The module withstands wind loads up to 2400 Pa and snow loads up to 5400 Pa, making it well suited for roofs exposed to typical Central European winter conditions. ### What does bifacial mean for the DHN-54Z16/DG panel, and how much additional energy does the rear side actually generate? Bifacial means the cells harvest light from both the front side and the rear side — through a transparent glass backsheet. The actual energy gain depends on the albedo of the surface below: a light-colored roofing membrane or white gravel can contribute 5–15% additional energy yield, while a dark bituminous felt will deliver significantly less. The greatest bifacial gains are achieved in ground-mounted installations where sufficient clearance between the module and the ground is maintained. ### What warranty does DAH Solar offer on the DHN-54Z16/DG series modules, and what does it cover? DAH Solar provides a 25-year product warranty covering physical defects and material faults, as well as a 30-year linear power output warranty. In practice, this means the manufacturer guarantees a specified minimum performance level for three decades. DAH Solar holds Tier 1 manufacturer status, providing additional confidence in the company's long-term ability to honor warranty claims. ### Does the DHN-54Z16/DG series perform well on overcast days and at the lower temperatures typical of the Polish climate? N-type TOPCon cells have a lower temperature coefficient than standard PERC cells, meaning power output drops less during high-temperature conditions. At low temperatures and under diffuse irradiance, the module performs at least on par with other modern monocrystalline modules. The dual-glass encapsulation provides additional protection against moisture ingress, which is particularly important in climates characterized by frequent freeze-thaw cycles. ### Are the DAH Solar DHN-54Z16/DG 480–510W modules compatible with the inverters commonly available in Poland? Yes. The series operates at an open-circuit voltage of approximately 37–38 V (STC) and is compatible with both 1000 V and 1500 V DC systems, ensuring broad compatibility with inverters from Fronius, SMA, Huawei, Growatt, and other widely available brands. Before configuring string layouts, it is advisable to consult the datasheet for the specific power variant (480–510 W), as the electrical parameters vary slightly across the power range. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/en-dhn-54z16-dg-480-510w-d8850c4a5635.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.0 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 | Cooler, lighter, +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 | | [DAH Solar DHN-54Z20/DG(BW)-480](https://comparepv.com/panel/dah-dhn-54z20-dg-bw-480) | 480 W | -10 W, -0.4 pp | | [DAH Solar DHN-54Z20/DG(BW)-485](https://comparepv.com/panel/dah-dhn-54z20-dg-bw-485) | 485 W | -0.2 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +70 W, cooler, +2.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +65 W, cooler, +2.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +60 W, lighter, +2.4 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +50 W, lighter, +2.4 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +50 W, lighter, +2.4 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +55 W, cooler, +2.2 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +55 W, cooler, +2.2 pp | --- Source: https://comparepv.com/panel/dah-dhn-54z16-dg-490w 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.