Efficiency leader, no clear weak spot
The DAH DHN-54R20/DG series is a range of modules designed for high energy production on a limited area, without compromising on durability. The use of n-type TOPCon cells helps maintain stable performance even at higher temperatures and over a long operating life, which translates directly into predictable yields. The two-speed glass-glass construction improves resistance to environmental factors and reduces the risk of degradation, making it a good option where the lifespan of the installation is important. Furthermore, bifacial technology allows for energy recovery from reflected radiation - particularly beneficial on bright roofs, gravel, or when mounted on the ground. The series is well-suited for single-family homes, small businesses, and projects focused on self-consumption, where power density and aesthetics are important. It stands out from the competition due to the combination of modern cell architecture with a focus on long-term reliability.
Ranking
Signals from the data
Residential, commercial, shaded-installations and hot-climate.
Top 17% of the TOPCon 450-500 W segment, against a median of 22.52%.
Top 20% of the TOPCon 450-500 W segment, against a median of 225.2.
The top power output in its form factor reaches 465 Wp at 23.27% efficiency, outperforming direct peer comparables — Jinko JS182MHC120 (21.48%) and Vikram SOMERA (20.91%) — by 1.79 and 2.36 percentage points, respectively. This translates into measurably higher energy yield from the same roof area.
The Pmax temperature coefficient is −0.29%/°C, compared to the typical −0.35% to −0.40%/°C for PERC cells. Annual degradation of TOPCon cells is 0.4–0.5%, versus 0.6–0.8% for PERC (Fraunhofer ISE, 2024). The net result is a meaningfully higher energy yield in the Polish climate, where module temperatures frequently exceed 60°C in summer.
The manufacturer guarantees ≥87% of nominal power after 30 years of operation. Peer comparables — the Jinko JS182MHC120 and Vikram SOMERA series — offer a standard 25-year warranty; the DAH series extends the protection horizon by five years, materially improving NPV metrics for both residential prosumer and commercial installations.
An 80% bifaciality factor enables energy harvesting from ground-reflected irradiance, generating an additional 5–15% annual yield on high-albedo surfaces (gravel, light-colored membrane, bare ground). The glass rear sheet eliminates PID risk and increases mechanical resilience — certified load ratings are 5,400 Pa for snow and 2,400 Pa for wind.
DAH Solar maintained BNEF Tier 1 status for at least four consecutive quarters in 2025 (Q1, Q3, and Q4 2025 officially confirmed). This status is required by the majority of renewable energy project financiers as a condition of credit or lease eligibility, facilitating financing for commercial installations.
The glass-glass construction raises the module weight to 23.9 kg, while comparable glass-backsheet modules in the 182 mm format typically weigh 21–22 kg. The ~2 kg difference per module adds 30–40 kg per kWp of installed capacity, which may necessitate a structural engineering assessment when mounting on older buildings with limited roof load-bearing capacity.
- At 23.0% efficiency, this panel is on par with typical TOPCon 450-500W modules
- At 230.2 W/m² power density, this panel generates 5.0 W/m² more per unit area than TOPCon 450-500W median (225.2 W/m²)
- At -0.29%/°C, hot weather performance is typical for TOPCon 450-500W panels
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
- #1797 for efficiency, #2165 for temperature performance out of 14005 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.
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