Solid all-round for its segment
The DAH DHN-72R20/DG(BW) series redefines efficiency standards through the use of a patented Full-Screen design, which completely eliminates the problem of dust and water accumulation on the module edges. The absence of a traditional frame protruding above the glass surface means that rainfall naturally cleans the surface, preventing energy losses and the formation of hot spots that are dangerous to the cells. The use of modern N-type TOPCon technology ensures higher conversion efficiency and excellent performance in low-light conditions, which is crucial in the Polish climate. An additional advantage is the Bifacial Double Glass construction, which enables energy harvesting from both sides of the panel, maximizing the return on investment, especially on surfaces with a high reflection coefficient. This product is primarily dedicated to solar farms and large commercial installations, where the costs of regular panel cleaning could significantly reduce the project's profitability. Unlike standard modules, the DHN-72R20/DG(BW) series guarantees long-term energy production stability without the need for frequent maintenance, placing it among the most cost-effective solutions on the PV market.
Ranking
Signals from the data
Utility-scale and commercial.
A peak module efficiency of 23.14% places this series on par with the Techwise Solar Sun-Pursuit Plus (23.14%) and ahead of the Longi Hi-MO 7 (23.1%) and Leapton LP182 (22.36%) at the same 625 Wp power class. Higher efficiency directly translates into a smaller installation footprint for the same energy yield.
The absence of an aluminum frame protruding above the glass surface eliminates edge accumulation of dust, pollen, and moss — the phenomenon known as frame soiling, which under typical Polish field conditions reduces annual energy yield by 1–3%. For PV plants above 1 MWp, this represents a tangible reduction in both the frequency and cost of module cleaning.
A Pmax temperature coefficient of -0.29%/°C outperforms the PERC standard of approximately -0.35%/°C. At a cell temperature of 65°C — typical on a summer day — the module loses roughly 10.2% of its rated power compared to 12.3% for PERC, a difference that is clearly noticeable in Poland's climate during summer production peaks.
DAH Solar maintained BloombergNEF Tier 1 status across all four quarters of 2025, satisfying the tightened criterion — effective from 2025 — of 10 MW in bankable projects. Bankability is a prerequisite for project finance on PV plants above 1 MWp and a condition for access to project insurance.
The 30-year linear power warranty exceeds the 25-year standard offered by most peer comparables. The bifacial double-glass construction eliminates backsheet degradation — typically manifesting as cracking and yellowing after 10–15 years — and enables energy harvest from ground-reflected irradiance, increasing yield by 5–25% depending on surface albedo (gravel, snow, light-colored membrane).
The Full-Screen frameless design is incompatible with standard mid-clamp and end-clamp hardware engineered for framed modules. Installation requires specialized clamping mounts with EPDM pads — such as frameless-compatible systems from Clenergy, K2, or Schletter — which increases BoS costs and limits the availability of compatible racking solutions through Polish distributors.
At module dimensions of 2382×1134×30 mm, double-glass units typically weigh 32–36 kg versus 26–28 kg for glass-backsheet equivalents in the same power class. For rooftop installations, this may necessitate a structural engineering assessment of the roof framing, particularly in buildings more than 20 years old.
- Efficiency of 22.9% matches the TOPCon 600-650W median
- Power density of 229.5 W/m² matches the TOPCon 600-650W median
- At -0.29%/°C, hot weather performance is typical for TOPCon 600-650W panels
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
- Ranked #2268 out of 14005 panels for efficiency in the database
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 620 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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