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DAH Solar Brand review

DHN-54R18/DG(BW)-450W

450 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, needs the roof space

Rank 6,822 of 14,005
Compare panels Datasheet PDF
Power (Wp)
450
Weak · bottom 9%
Efficiency (%)
22.05
Weak · bottom 22%
Density (Wp/m²)
220.5
Weak · bottom 21%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
24.4
Typical · median 24.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The DAH DHN-54R18/DG(BW) 450-465W series is designed for installations where actual energy yield throughout the year is more important than performance under ideal laboratory conditions. The use of n-type TOPCon cells results in more stable module operation and slower aging, which will be appreciated by investors planning long-term installations. The double-glass construction increases resistance to weather conditions and microcracks, making the panels better suited for transport, installation, and long-term loads.

An additional advantage is bifaciality - the module can utilize reflected light from the ground, which helps improve energy production on roofs, membranes, or ground-mounted installations. The black frame with white back design facilitates aesthetics and adaptation to modern designs. This is a good choice for homes, businesses, and farms where durability, predictable yields, and investment security are important.

Ranking

1,089 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.05% 22.52% Weak · bottom 22% 6,233
Power density 220.5 225.2 Weak · bottom 21% 6,236
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 54.2 52.2 Typical 8,453
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 · 3 caution
Best for

Residential and commercial.

Not ideal for

Roofs where every square metre has to count and tight roof space.

Watch-outs
220.5 watts per square metre

Bottom 21% of the TOPCon 450-500 W segment, against a median of 225.2.

22.05% module efficiency

Bottom 22% of the TOPCon 450-500 W segment, against a median of 22.52%.

What owners get
Efficiency 0.6–1.9 pp above competing modules

The module achieves 22.05–22.78% efficiency, while comparable offerings from Jinko Solar JS182MHC120 and JS Solar top out at 21.48%, and Vikram Solar SOMERA at 20.91%. For the same roof area, this translates into measurably higher energy yield without the need to install additional panels.

Temperature coefficient of -0.29%/°C

N-type TOPCon technology delivers a Pmax(T) of -0.29%/°C, a significantly better result than typical PERC cells (-0.34 to -0.36%/°C). Under Polish summer conditions—where module temperatures routinely reach 65–70°C—the production advantage can amount to 1.5–2% annually in favor of this series.

30-year linear power warranty

The manufacturer guarantees ≥99% of rated power after year 1, ≥89.4% after 25 years, and ≥87.4% after 30 years. Peer comparables in this segment (Jinko JS182MHC120, Vikram SOMERA) standardly offer warranties up to 25 years—DAH extends the protection horizon by 5 years at no additional cost.

Bifacial design with glass-glass construction

The dual-glass structure eliminates EVA yellowing and improves mechanical durability, while the bifacial configuration enables an additional 5–15% energy gain from reflected irradiance (white membrane, gravel ballast, snow). N-type TOPCon cells exhibit minimal LID effect (<0.5%), ensuring stable output from the very first year of operation.

BNEF Tier 1 – confirmed Q1–Q4 2025

DAH Solar has maintained BloombergNEF Tier 1 status continuously from at least Q1 2025 through Q4 2025 (confirmed via taiyangnews.info and en.dahsolar.com), meeting the tightened BNEF criteria introduced in 2025 (minimum 10 MW of bank-financed projects). This translates into easier acceptance of installations by insurers and financing institutions.

Trade-offs
Weight of 24.4 kg – structural assessment required

The glass-glass construction results in a module weight of 24.4 kg at dimensions of 1800×1134×30 mm, approximately 15–20% heavier than comparable single-glass modules (~20–21 kg). For retrofits on older roofs (e.g., sheet metal on battens pre-1990), a structural load-bearing assessment is required before specifying this series.

Notes from the database
  • Efficiency of 22.1% matches the TOPCon 450-500W median
  • Power density of 220.5 W/m² is 4.7 W/m² below TOPCon 450-500W median (225.2 W/m²) - needs more roof space
  • Temperature coefficient of -0.29%/°C matches the TOPCon 450-500W median
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
  • In the top 45% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 450 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.05 % Weak Segment median 22.52%
Vmpp · Impp 33.50 V · 13.43 A Operating point at max power
Voc · Isc 39.40 V · 14.42 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1800×1134×34 mm · 2.04 m² of roof
Weight 24.4 kg Typical Typical · median 24.0 kg
Cells 108 · 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 393 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 450 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-54R18/DG(BW)-450W 450 W 22.05% -0.290 24.4 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +45 W, lighter, +2.8 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +40 W, lighter, +2.4 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +50 W, cooler, +2.4 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +50 W, lighter, +2.4 pp
GK-3-54HGb-500M 500 W 24.50% -0.260 21.4 kg +50 W, lighter, +2.4 pp
GCL-NR10R/54BGDF 500 W 24.50% -0.260 24.6 kg +50 W, cooler, +2.4 pp
DAS-DH108ND-440W 440 W 21.60% -0.280 21.7 kg -10 W, lighter, -0.4 pp
DAS-DH108ND-445W 445 W 21.80% -0.280 21.7 kg Lighter, -0.2 pp
DHN-54R18/DG-455W 455 W 22.29% -0.290 24.4 kg +0.2 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +60 W, cooler, +2.9 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +55 W, cooler, +2.6 pp

Found 197 panels of the same or similar size to this one, within ±10 mm. See them here Found 201 panels of the same or similar size to this one, within ±25 mm. See them here Found 1712 panels of the same or similar size to this one, within ±50 mm. See them here Found 4014 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty is offered on the DAH Solar DHN-54R18/DG(BW) panels?
The DHN-54R18/DG(BW) series comes with a 25-year product warranty covering manufacturing defects and a 30-year linear power output warranty. After 30 years, the manufacturer guarantees that the modules will retain at least 87.4% of their nominal power. This is one of the longest power warranty schedules available on the market, made possible by the use of more durable n-type TOPCon cells instead of the older PERC technology.
Do bifacial DAH DHN-54R18/DG(BW) panels deliver a meaningful energy gain on a standard rooftop installation?
The bifacial gain is most pronounced on light-colored surfaces, ground-mount systems, or roofs with a white TPO/PVC membrane, where reflected irradiance can contribute an additional 5–25% of energy yield. On a typical dark bituminous roof, the gain will be more modest, in the range of 2–5%. Nevertheless, the bifacial design combined with the dual-glass construction results in better long-term durability and lower degradation rates compared to monofacial modules.
How much does the DAH DHN-54R18/DG(BW) panel weigh, and can a standard roof structure support it?
The module weighs approximately 24.4 kg and measures 1800×1134×30 mm. Prior to installation, it is advisable to commission a structural assessment of the roof, especially on older buildings. Standard Polish residential homes with timber rafter framing generally have no difficulty supporting this load; however, the final determination always rests with a certified installer who evaluates the specific structure on site.
How does the TOPCon technology in the DHN-54R18/DG(BW) series differ from conventional PERC panels?
The n-type TOPCon cells achieve higher efficiency — up to approximately 22.8% in this series — and exhibit a slower power degradation rate over time compared to standard PERC cells. They also feature a superior temperature coefficient (−0.29%/°C versus approximately −0.35%/°C for PERC), which means lower power losses on hot days. In practice, this translates into a higher annual energy yield from the same roof area.
Are the DAH Solar DHN-54R18/DG(BW) panels suitable for ground-mount utility-scale PV installations?
Yes, the DHN-54R18/DG(BW) series is a popular choice for ground-mount applications. The bifacial glass-glass construction allows better utilization of light reflected from bright soil or grass coverage beneath the array. The modules are rated for high resistance to moisture ingress and mechanical loads, which is critical for open-field exposure. DAH Solar is a Bloomberg NEF Tier 1 manufacturer, which facilitates bankability and project financing for commercial and utility-scale developments.
Does the black frame of the DHN-54R18/DG(BW) series affect the panel's electrical performance?
The black anodized aluminum frame is primarily an aesthetic choice and has no adverse effect on the module's electrical parameters. Combined with the white backsheet (indicated by the BW designation), the module integrates well into modern architectural designs. It is worth noting that a non-anodized aluminum frame can absorb more heat in warmer climates; however, under typical Polish climatic conditions this has no practical impact on energy yield.
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