--- title: "DAH Solar DHN-54R20/DG(BW)-465 465W Solar Panel - Specs & Review | ComparePV" description: "DAH Solar DHN-54R20/DG(BW)-465 465W solar panel. Specs: 23.27% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dah-dhn-54r20-dg-bw-465" updated: 2026-09-11 --- # DAH Solar DHN-54R20/DG(BW)-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(BW)-465 - **Series:** DHN-54R20/DG(BW) - **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 and commercial. ## 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 DHN-54R20/DG(BW) series delivers module efficiency of 22.52–23.27%, while the supplied peer comparables top out at 21.48% (Jinko Solar JS182MHC120, JS Solar JS182MHC120) and 20.91% (Vikram SOMERA). This translates to 5%–11%+ higher power density per square meter — a compelling advantage on space-constrained rooftops. - **Low temperature coefficient: −0.29%/°C** - N-type TOPCon technology delivers a Pmax temperature coefficient of −0.29%/°C. Under Polish summer conditions, when cell temperatures exceed 65°C, power loss is approximately 20–30% lower than in PERC modules (typically −0.35 to −0.40%/°C), directly boosting energy yield during the peak generation season. - **30-year power warranty at ≥87%** - The manufacturer guarantees at least 87% of nominal power output after 30 years of operation. Comparable models — Jinko JS182MHC120 and Vikram SOMERA — offer standard 25-year linear warranties. DAH extends coverage by an additional 5 years, a meaningful factor in the financial modeling of both commercial and prosumer installations. - **Glass-glass construction with ~80% bifaciality** - The dual-glass design (2+2 mm) eliminates PID degradation risk and moisture-induced delamination, while enhancing resistance to salt fog and freezing conditions. A bifaciality factor of ~80% enables energy harvest from ground-reflected irradiance — particularly advantageous on flat-roof installations, carports, and light-colored gravel ballast systems. - **BNEF Tier 1 — bankable through at least Q4 2025** - DAH Solar maintained BNEF Tier 1 status throughout every quarter of 2025, including Q4 2025, following the tightened threshold of 10 MW reference projects. Bankable manufacturer status is a prerequisite for most C&I project financiers and is required to qualify for portfolio-level insurance coverage. ## Cons - **Higher weight: 23.9 kg (glass-glass)** - The dual-glass construction raises module weight to 23.9 kg — approximately 2–3 kg more than typical glass-backsheet modules in the same power class (~21 kg). On large rooftop installations on existing buildings, this may necessitate a structural load assessment and the use of dedicated racking systems certified for heavier modules. ## About this series The DAH DHN-54R20/DG(BW) series is a range of modules designed for high energy production in a limited space - thanks to **n-type TOPCon cells** and optimized operation at higher temperatures, the installation maintains its real efficiency for a longer period during the summer season. A key feature is the **glass-glass construction**, which improves resistance to moisture, saline fog, and material fatigue, resulting in more stable operation in Polish conditions. The modules are also **bifacial**, meaning they can utilize reflected light from bright roofs, ground, or gravel - this is a practical way to achieve additional gains without increasing the number of panels. The **DG(BW) version with a black frame** makes it easy to aesthetically match with modern roofs and facades. This is a good choice for homes with limited space, businesses looking for maximum output per square meter, and for installations on flat roofs and carports, where the gains from bifacial operation can be realistically felt. ## Notable figures - 23.3% module efficiency - 0.8pp better than the \*\*TOPCon 450-500W\*\* median of 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 - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof - #1202 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### What warranty coverage applies to the DAH Solar DHN-54R20/DG(BW) panels? The DHN-54R20/DG(BW) series comes with a 25-year product warranty and a 30-year linear power output warranty — after 30 years, the module retains at least 87.4% of its nominal power. This is one of the longest power warranties available on the market, which is particularly significant for investments with a long-term payback horizon. ### What does bifaciality mean for the DHN-54R20/DG(BW) series, and how much additional energy can be gained? The DHN-54R20/DG(BW) modules generate power from both sides — the rear glass absorbs light reflected from the ground, rooftop surface, or surrounding environment. In a typical rooftop installation over a light-colored substrate or gravel ballast, the realistic bifacial energy gain ranges from 5% to 15% annually. The greatest benefit is achieved on flat roofs, carports, and ground-mounted systems, where the angle of incidence of reflected light is most favorable. ### Are the DAH Solar DHN-54R20/DG(BW) panels suitable for a pitched roof with limited available area? Yes. The modules measure 1762×1134×30 mm and weigh 23.9 kg, which is well within the handling capabilities of standard installation crews. With power output up to 465 Wp and efficiency exceeding 23%, they allow maximum energy yield to be extracted from every available square meter — a critical advantage on smaller rooftops where every panel counts. ### How does TOPCon technology affect the performance of DHN-54R20 panels in the Polish climate? The n-type TOPCon cells feature a temperature coefficient of Pmax of only −0.29%/°C, meaning reduced power loss during hot weather compared to older PERC modules (approximately −0.35%/°C). In practice, this translates to better energy production under Polish summer conditions. In winter, n-type technology is characterized by low dark current and strong performance under diffuse and low-irradiance light, which is common during overcast Central European conditions. ### Does the glass-glass construction of the DHN-54R20/DG(BW) series matter for the long-term durability of the installation? Yes. Instead of a conventional polymer backsheet, a second glass pane is used, which significantly reduces moisture ingress and material fatigue caused by thermal cycling and freeze-thaw stresses. The modules withstand snow loads up to 5,400 Pa and wind loads up to 2,400 Pa, enabling safe installation in regions with harsh winters and strong winds — conditions typical of Polish mountain and coastal areas. ### Is DAH Solar a reputable manufacturer, and can the DHN-54R20/DG(BW) panels be trusted as a long-term investment? DAH Solar is a Bloomberg NEF Tier 1 listed manufacturer, a designation that reflects verified financial strength and production capacity sufficient to honor warranty obligations over the long term. The company holds IEC and CE certifications, and its modules are regularly tested by independent laboratories. For customers in Poland, this is a critical consideration: a 25/30-year warranty only holds value if the issuing company remains solvent and operational throughout that period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/en-dhn-54r20-dg-bw-450-465w-59ff3d46a9ea.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-bw-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.