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DAH Solar Brand review

DAS-DH120NA-485

485 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, weak in heat

Rank 7,185 of 14,005
Compare panels Datasheet PDF
Power (Wp)
485
Strong · top 20%
Efficiency (%)
22.50
Typical · median 22.52%
Density (Wp/m²)
224.7
Typical · median 225.2
Temp (%/°C)
-0.300
Weak · bottom 20%
Weight (kg)
26.0
Typical · median 24.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The DAH DAS-DH120NA panel series is revolutionizing the PV market thanks to the use of patented Full Screen technology, which effectively eliminates the problem of water and dirt accumulation at the module edges. The absence of a traditional frame lip allows rain to naturally wash away dust, leading to a real increase in energy yields of up to several percent compared to standard designs. The use of modern N-Type TOPCon cells ensures the highest efficiency and excellent performance in low light conditions, which is crucial for local climate conditions. This product line is the ideal solution for investors seeking maintenance-free systems with minimal annual degradation. Thanks to a unique design preventing the formation of hot-spots, these panels offer a higher level of safety and longevity. DAS-DH120NA stands out from the competition with its completely smooth front surface, making it the best choice for low-tilt installations where standard modules require frequent servicing. Investing in this series is a guarantee of maximizing energy self-consumption while simultaneously reducing system maintenance costs, which significantly accelerates the return on the entire green energy investment.

Ranking

1,089 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.50% 22.52% Typical 4,222
Power density 224.7 225.2 Typical 4,501
Temperature coefficient -0.300 -0.290 Weak · bottom 20% 6,093
Weight per kWp 53.6 52.2 Typical 7,617
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 · 2 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Hot climates.

Watch-outs
-0.300 %/°C temperature coefficient

Bottom 20% of the TOPCon 450-500 W segment, against a median of -0.290.

What owners get
Patented Full Screen Technology

The absence of a traditional frame ledge eliminates water and debris pooling at module edges — natural rainfall rinses dust from the entire panel surface. This is particularly significant at tilt angles below 15°, where conventionally framed modules may require maintenance several times per season; the manufacturer estimates a yield gain of several percent compared to standard framed designs.

Up to 22.7% Efficiency — Top-Tier TOPCon Performance

The peak efficiency of 22.7% matches or exceeds direct competitors, including Horay Solar HS 182-120 TC (22.6%) and Renesola RS4-490NX (22.71%). The only peer competitor with a clearly higher rating is Solar-Fabrik Mono S4 BC White (24%), which relies on the more costly back-contact technology and belongs to a separate price category.

N-Type TOPCon + Bifacial Design

N-type cells limit LID/LETID degradation to approximately 1% in the first year and 0.4% per year thereafter (vs. over 2% LID in legacy PERC), directly translating into higher cumulative energy yield over a 30-year operational lifetime. Bifacial collection of albedo-reflected irradiance delivers a real-world additional 5–25% generation depending on ground surface reflectivity (e.g., snow cover, light-colored gravel).

30-Year Linear Power Warranty (≥87.4%)

A linear power warranty extending to 30 years with an end-of-term floor of 87.4% goes beyond the typical 25-year terms offered by Tier-2 competitors, directly reducing installation LCOE and eliminating the risk of an abrupt warranty threshold breach in any given year of operation.

BNEF Tier-1 for Four Consecutive Quarters of 2025

DAS Solar maintained Bloomberg NEF Tier-1 status throughout all four quarters of 2025 (the fourth consecutive appearance on the list, confirmed by pv-magazine.com), confirming full bankability for debt-financed projects and acceptance by leading renewable energy project finance institutions.

Trade-offs
15-Year Product Warranty

The product warranty stands at 15 years, whereas DAS Solar standardly offers 25 years for its other N-type TOPCon series, and segment leaders such as Jinko Tiger Neo and LONGi Hi-MO 9 provide the same 25-year coverage. The shorter term may be a negative factor during due diligence for projects with a horizon exceeding 20 years and for institutional buyers requiring full alignment between the product warranty and the power output warranty.

Notes from the database
  • At 22.5% efficiency, this panel is on par with typical TOPCon 450-500W modules
  • Power density of 224.7 W/m² matches the TOPCon 450-500W median
  • At -0.30%/°C, hot weather performance is typical for TOPCon 450-500W panels
  • Weight of 26.0 kg is 2.0 kg above TOPCon 450-500W median (24.0 kg) - verify structural support
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface

Specifications

Open datasheet PDF
Nominal power (Pmax) 485 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.50 % Typical Segment median 22.52%
Vmpp · Impp 36.75 V · 13.20 A Operating point at max power
Voc · Isc 43.18 V · 13.95 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1903×1134×30 mm · 2.16 m² of roof
Weight 26.0 kg Typical Typical · median 24.0 kg
Cells 120 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 20% of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 424 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

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 485 Wp appear here. The rest cover the whole series.

Linear Power Warranty: Standard vs. DH120NA guarantee Linear Power Warranty: Standard vs. DH120NA guarantee Whole series I-V Curve I-V Curve Whole series P-V Curve P-V Curve 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
-0.300 %/°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 DAS-DH120NA-485 485 W 22.50% -0.300 26.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +25 W, cooler, +2.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +2.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +2.2 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +2.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +2.0 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg Cooler, lighter, +2.0 pp
DHT-M60X10-430W 430 W 19.93% -0.350 23.5 kg -55 W, -2.6 pp, -5 yr warranty
DHT-M60X10-435W 435 W 20.16% -0.350 23.5 kg -50 W, -2.3 pp, -5 yr warranty
DHM-60X10/FS(BB)-440W 440 W 20.39% -0.350 23.8 kg Hotter, -2.1 pp, -5 yr warranty
DHM-60X10/FS(BW)-445W 445 W 20.62% -0.350 23.8 kg Hotter, -1.9 pp, -5 yr warranty
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +75 W, cooler, +2.3 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +70 W, cooler, +2.1 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +65 W, lighter, +1.9 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +55 W, cooler, +1.9 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +55 W, cooler, +1.9 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +60 W, cooler, +1.8 pp

Found 725 panels of the same or similar size to this one, within ±10 mm. See them here Found 751 panels of the same or similar size to this one, within ±25 mm. See them here Found 870 panels of the same or similar size to this one, within ±50 mm. See them here Found 1499 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is the Full Screen technology in DAH Solar DAS-DH120NA panels, and does it actually increase energy yield?
Full Screen is a patented DAH Solar solution that eliminates the front-side frame rail from the module's face. As a result, rainwater flows freely across the entire glass surface, washing away dust and contaminants without accumulating at the edges. The manufacturer claims an energy yield increase of 6–15% compared to standard framed modules. In conditions where pollen and road dust can significantly reduce system performance, the self-cleaning effect translates into measurable savings by reducing the need for periodic panel washing.
What warranty coverage applies to the DAH Solar DAS-DH120NA panels?
The DAS-DH120NA series comes with a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. The power warranty guarantees that over three decades the panel retains the manufacturer-specified minimum percentage of its nominal power of 490 Wp. The characteristically low annual degradation rate of N-Type TOPCon cells means that in practice the panels operate significantly closer to their nominal output for far longer than older P-Type technology.
Is the DAH Solar DAS-DH120NA suitable for roofs with a low tilt angle?
Yes — the DAS-DH120NA is in fact a recommended choice for flat and low-pitch roofs. Conventional framed modules tend to accumulate water, silt, and debris along their lower edge, which is especially problematic at shallow roof slopes. Thanks to the frameless, threshold-free front surface of the Full Screen design, water and contaminants run off freely, eliminating the need for frequent maintenance. This is a significant advantage for installations on industrial buildings, garages, or inverted (warm) roof structures.
What does it mean that the DAS-DH120NA is bifacial, and does bifaciality make sense in Poland?
Bifaciality means the panel generates power from both its front and rear surfaces by capturing light reflected from the ground or surrounding environment. In Poland, the bifacial gain is most pronounced in winter, when snow reflects irradiance onto the module's rear side, and on light-colored gravel substrates or white flat-roof membranes. For typical rooftop installations the additional yield is in the low single-digit percentage range, while ground-mounted systems at adequate mounting height can achieve noticeably higher bifacial gains.
Do the N-Type TOPCon cells in the DAS-DH120NA series perform better under overcast conditions than standard panels?
Yes. N-Type TOPCon cells exhibit higher sensitivity to diffuse irradiance compared to mainstream P-Type PERC cells. In practice this translates into better performance on the cloudy, low-irradiance winter days that are typical of the Polish climate. The 490 Wp peak power combined with the high cell efficiency yields more kilowatt-hours on days with low solar insolation — a particularly important advantage for prosumers seeking to maximize self-consumption throughout the year.
Are the DAH Solar DAS-DH120NA panels compatible with the inverters commonly available in Poland?
Yes, the DAS-DH120NA series is compatible with all major inverters available on the Polish market, including Fronius, SMA, Huawei, Growatt, and Sofar. The panel operates within the standard voltage and current ranges typical of 490 Wp class modules, so string configuration follows the same process as with any other module in this power category. DAH Solar is a Tier-1 manufacturer, meaning its specifications are verified by independent audits and accepted by banks financing large-scale installations.
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