--- title: "DAH Solar DHN-54R20/DG-465 465W Solar Panel - Specs & Review | ComparePV" description: "DAH Solar DHN-54R20/DG-465 465W solar panel. Specs: 23.27% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dah-dhn-54r20-dg-465" updated: 2026-09-11 --- # DAH Solar DHN-54R20/DG-465 Space saver, no clear weak spot 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** DAH Solar - **Model:** DHN-54R20/DG-465 - **Series:** DHN-54R20/DG - **Rated power:** 465 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 465 W | 465 W | Typical | | | Module efficiency | 23.27% | 22.52% | Strong - top 12% | 1,202 | | Power density | 232.7 | 225.2 | Strong - top 10% | 1,115 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 23.9 kg | 24.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.27% | 22.52% | Strong - top 12% | 1,202 | | Power density | 232.7 | 225.2 | Strong - top 10% | 1,115 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 51.4 | 52.2 | Typical | 4,788 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **232.7 watts per square metre** - Top 10% of the TOPCon 450-500 W segment, against a median of 225.2. - **23.27% module efficiency** - Top 12% of the TOPCon 450-500 W segment, against a median of 22.52%. - **Best for:** Residential, commercial, shaded-installations and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 465 W - **Efficiency:** 23.27 % - **Voltage at Pmax (Vmp):** 34.10 V - **Current at Pmax (Imp):** 13.64 A - **Open-circuit voltage (Voc):** 40.00 V - **Short-circuit current (Isc):** 14.60 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.9 kg - **Area:** 2.00 m2 - **Power density:** 232.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 406 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1202 of 14005 | | Power density | 1115 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 4788 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Premium-class efficiency – up to 23.27%** - 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. - **N-type TOPCon – lower degradation and better thermal performance** - 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. - **30-year linear power warranty** - 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. - **Bifacial glass-glass construction with 80% bifaciality factor** - 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. - **BNEF Tier 1 – confirmed bankability Q1–Q4 2025** - 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. ## Cons - **Weight of 23.9 kg – load concern for aging rooftops** - 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. ## About this series 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. ## Notable figures - At 23.3% efficiency, this panel is 0.8pp above typical \*\*TOPCon 450-500W\*\* modules (median: 22.5%) - At 232.7 W/m² power density, this panel generates 7.5 W/m² more per unit area than \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - 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 9% for efficiency among all TOPCon panels ## Questions ### What warranty does the DAH Solar DHN-54R20/DG series carry and what does it cover exactly? The DHN-54R20/DG series is backed by a 25-year product warranty covering manufacturing defects and material failures, as well as a 30-year linear power output warranty. The manufacturer guarantees that after 30 years of operation the modules will retain at least 87.4% of their nominal power. This is one of the longest power warranties available on the market today, and it directly translates into predictable return on investment across the full lifecycle of the installation. ### Does bifacial technology in the DHN-54R20/DG series actually increase energy yield, and when does it make the most sense? Yes, the bifacial cells in the DHN-54R20/DG series capture irradiance reflected from the surface beneath the array, delivering a measurable gain in energy yield. The greatest benefit is achieved in ground-mounted installations over light-colored gravel, concrete, or white roofing membranes, where the rear-side gain can reach 10–20%. On a typical dark-gray pitched roof the gain is smaller but still positive, especially when the modules are mounted at an appropriate tilt angle with sufficient clearance between the module and the roof surface. ### How do DAH Solar DHN-54R20/DG panels perform under high temperatures in summer? The n-type TOPCon cells used in the DHN-54R20/DG series feature a favorable power temperature coefficient of only −0.29 %/°C. This means that for every 10 °C rise in cell temperature the module loses less than 3% of its rated power — a significantly better result than conventional p-type modules. In practice, the series outperforms standard panels on hot summer days, precisely when grid electricity is most valuable and every percentage point of output matters. ### What are the advantages of the glass-glass dual-glass construction in the DHN-54R20/DG panels, and does it complicate installation? Replacing the rear plastic backsheet with a second glass pane provides superior protection against moisture ingress, UV radiation, and mechanical stress, which directly reduces the annual degradation rate of the module. The trade-off is increased weight — the DHN-54R20/DG module weighs approximately 23.9 kg — so it is advisable to verify the load-bearing capacity of the roof structure before installation and to use a racking system that is certified for glass-glass modules. ### Is DAH Solar a reliable manufacturer, and will service and support for the DHN-54R20/DG panels still be available in 15 years? DAH Solar holds a Tier 1 designation from Bloomberg NEF, which is an independent assessment of the manufacturer's financial stability and production quality. The company has been in operation since 2009, owns its own manufacturing facilities, and has an established presence in European markets. The Tier 1 rating is particularly relevant when applying for leasing or bank financing for a PV installation, as lenders use it as confirmation of manufacturer creditworthiness and long-term viability. ### What is the peak power output of the DAH Solar DHN-54R20/DG panels, and how many modules are needed for a typical residential installation? The top variant in the DHN-54R20/DG series is rated at 465 Wp. For a typical residential system of 10 kWp, only 22 modules are required, while a 6 kWp system needs approximately 13 modules. The high power density achieved within the 1762 × 1134 mm module footprint means that less roof area is consumed compared to older, lower-efficiency panels — a critical advantage when available roof space is limited. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/en-dhn-54r20-dg-450-465w-08d4c13cff38.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +45 W, cooler, +1.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +30 W, cooler, +1.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +40 W, cooler, +1.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +35 W, cooler, +1.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +35 W, cooler, +1.2 pp | | [DAH Solar DHN-48Z16/DG(RR)-380W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-380w) | 380 W | -85 W, -4.2 pp | | [DAH Solar DHN-48Z16/DG(RR)-385W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-385w) | 385 W | -80 W, -4.0 pp | | [DAH Solar DHN-48Z16/DG(RR)-390W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-390w) | 390 W | -75 W, -3.8 pp | | [DAH Solar DHN-48Z16/DG(RR)-395W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-395w) | 395 W | -70 W, -3.5 pp | | [DAH Solar DHN-48Z16/DG(RR)-400W](https://comparepv.com/panel/dah-dhn-48z16-dg-rr-400w) | 400 W | -65 W, -3.2 pp | --- Source: https://comparepv.com/panel/dah-dhn-54r20-dg-465 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.