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DAH Solar Brand review

DHN-48Z16/DG-425

425 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, modest efficiency

Rank 8,711 of 14,005
Compare panels Datasheet PDF
Power (Wp)
425
Typical for its class
Efficiency (%)
21.27
Weak · bottom 10%
Density (Wp/m²)
212.7
Weak · bottom 13%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
23.9
Weak · 1.9 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

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.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall 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
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 4 caution
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.

Watch-outs
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.

What owners get
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.

Trade-offs
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.

Notes from the database
  • 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

Specifications

Open datasheet PDF
Nominal power (Pmax) 425 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.27 % Weak Segment median 22.00%
Vmpp · Impp 29.60 V · 14.36 A Operating point at max power
Voc · Isc 35.00 V · 15.34 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1762×1134×30 mm · 2.00 m² of roof
Weight 23.9 kg Weak Weak · 1.9 kg above median
Cells 96 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 371 W guaranteed

Datasheet charts

Open datasheet PDF

Measured curves published by DAH Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 425 Wp appear here. The rest cover the whole series.

30-Year Linear Power Output Warranty 30-Year Linear Power Output Warranty Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
DAH Solar DHN-48Z16/DG-425 425 W 21.27% -0.290 23.9 kg You are here
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +50 W, +2.7 pp, +10 yr warranty
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +40 W, lighter, +2.5 pp
JAT54S40-475/LR 475 W 23.80% -0.260 19.3 kg +50 W, lighter, +2.5 pp
TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg +50 W, +2.5 pp
CHSM48RN(DG)/F-BH-475 475 W 23.80% -0.290 24.5 kg +50 W, +2.5 pp
AIKO-A475-MCE54Mw 475 W 23.80% -0.260 21.0 kg +50 W, cooler, +2.5 pp
AIKO-A475-MAH54Mw 475 W 23.80% -0.260 21.5 kg +50 W, cooler, +2.5 pp
DHN-48Z16/DG(RR)-380W 380 W 19.02% -0.290 23.9 kg -45 W, -2.2 pp
DHN-48Z16/DG(RR)-385W 385 W 19.27% -0.290 23.9 kg -40 W, -2.0 pp
DHN-48Z16/DG(RR)-390W 390 W 19.52% -0.290 23.9 kg -35 W, -1.8 pp
DHN-48Z16/DG(RR)-395W 395 W 19.77% -0.290 23.9 kg -30 W, -1.5 pp
DHN-48Z16/DG(RR)-400W 400 W 20.02% -0.290 23.9 kg -25 W, -1.2 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +85 W, cooler, +3.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +70 W, cooler, +3.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +80 W, cooler, +3.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +65 W, cooler, +3.2 pp

Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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