Solid all-round for its segment
The DAH DHN-54R18/DG 450-465W series is designed to maximize energy yield in situations where every square meter of roof space matters. The use of N-type TOPCon solar cells helps maintain high efficiency even under real-world operating conditions, rather than just in a laboratory setting, which translates into more stable annual energy production. The module has a double-glass (glass-glass) construction, making it better able to withstand mechanical loads and long-term exposure to moisture and varying temperatures - a practical advantage in the Polish climate.
An additional advantage is bifaciality, which allows you to utilize reflected light from the ground or a light-colored roof surface, boosting yield without expanding the installation. Furthermore, lower temperature sensitivity promotes better performance in the summer, when traditional modules lose the most energy.
This is a good choice for single-family homes, commercial rooftops, and carports, where durability, aesthetic appearance, and predictable energy production over the years are important.
Ranking
Signals from the data
Residential, commercial and hot-climate.
The 465 W variant achieves an efficiency of 22.78%, which is 1.30 percentage points higher than comparable modules from Jinko Solar and JS Solar JS182MHC120 (21.48%), and as much as 1.87 percentage points higher than the Vikram Solar SOMERA (20.91%). This translates into greater energy yield per m² of roof area without the need to expand the installation.
N-type TOPCon cells exhibit a Pmax temperature coefficient of –0.29%/°C, whereas typical PERC modules range from –0.34 to –0.37%/°C. Under Polish summer conditions — with cell temperatures of 60–75°C — this difference results in meaningfully higher seasonal energy yield of several percentage points.
The manufacturer guarantees ≥89.4% of rated power after 25 years and ≥87.4% after 30 years. Competing series in this segment (Jinko, JS Solar) typically cap their power warranty at 25 years. The extended warranty reduces financial risk over the full lifecycle of the installation.
The dual-glass design provides resistance to snow loads of up to 5,400 Pa and wind loads of up to 2,400 Pa. In Poland's climate — characterized by harsh winters and variable snow accumulation — these ratings represent a significant advantage over glass-backsheet modules, which typically carry limits of 2,400–4,000 Pa.
DAH Solar has maintained BNEF Tier 1 status for several consecutive quarters (confirmed for Q1, Q3, and Q4 2025), establishing its bankability — meaning leading financial institutions are prepared to finance projects using these modules without requiring additional collateral or credit enhancements.
The glass-glass construction results in a module weight of 24.4 kg, compared to 21–22 kg typical of equivalent glass-backsheet modules in this class. For larger installations on older rooftops, an additional structural engineering assessment or substructure reinforcement may be required.
- Efficiency of 22.5% matches the TOPCon 450-500W median
- At 225.4 W/m² power density, roof space requirements are typical for TOPCon 450-500W panels
- 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 28% for efficiency among all TOPCon panels
Specifications
Datasheet charts
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 460 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
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