--- title: "DAH Solar DHN-60R18/DG-520 520W Solar Panel - Specs & Review | ComparePV" description: "DAH Solar DHN-60R18/DG-520 520W solar panel. Specs: 23.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dah-dhn-60r18-dg-520" updated: 2026-09-11 --- # DAH Solar DHN-60R18/DG-520 Solid all-round for its segment 432 panels in the segment TOPCon 500-550 W ## Identity - **Manufacturer:** DAH Solar - **Model:** DHN-60R18/DG-520 - **Series:** DHN-60R18/DG (500–520W) - **Rated power:** 520 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 500-550 W (432 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 520 W | 510 W | Typical | | | Module efficiency | 23.00% | 22.73% | Typical | 1,919 | | Power density | 230.0 | 227.4 | Typical | 2,135 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 27.0 kg | 27.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.00% | 22.73% | Typical | 1,919 | | Power density | 230.0 | 227.4 | Typical | 2,135 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 51.9 | 52.4 | Typical | 5,342 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Residential, commercial and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 520 W - **Efficiency:** 23.00 % - **Voltage at Pmax (Vmp):** 37.90 V - **Current at Pmax (Imp):** 13.72 A - **Open-circuit voltage (Voc):** 44.50 V - **Short-circuit current (Isc):** 14.72 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:** 120 - **Bifacial:** yes ### Physical - **Length:** 1994 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 27.0 kg - **Area:** 2.26 m2 - **Power density:** 230.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1919 of 14005 | | Power density | 2135 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 5342 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Exceptionally Low Temperature Coefficient** - The Pmax temperature coefficient is -0.29%/°C, placing it among the lowest figures in the TOPCon segment (standard PERC cells typically range from -0.35 to -0.40%/°C). On hot summer days when module temperature exceeds 70°C, this advantage translates to a real-world gain of 3–5 W less power lost per 100 W of rated capacity compared to older cell technologies. - **30-Year Linear Power Warranty** - The manufacturer guarantees a minimum of 87.4% of rated power output after 30 years of operation (89.4% after 25 years). Leading competitors in the 500–520 Wp segment — such as the Silfab NTC — standardly offer a 25-year linear warranty, which at a comparable degradation rate provides a shorter investment protection horizon. - **High-Strength Double-Glass Construction** - The glass-glass design (2+2 mm) delivers a snow load rating of up to 5,400 Pa and wind load resistance of up to 2,400 Pa, meeting the structural requirements of central and northern European climate zones. The elimination of a polymer backsheet removes the risk of delamination and swelling, reducing the likelihood of microcracks throughout the module's full service life. - **BNEF Tier 1 — Confirmed Bankability** - DAH Solar has maintained continuous BNEF Tier 1 status for several consecutive years, including Q1, Q3, and Q4 2025 and Q1 2026. This designation enables access to project financing without additional credit enhancements and reduces manufacturer risk exposure for commercial installations and utility-scale PV plants. - **Bifacial N-Type TOPCon — Reduced LID Degradation** - N-type cells are inherently resistant to light-induced degradation (LID), a known performance loss mechanism in P-type/PERC technology. The bifacial configuration enables 5–15% additional energy harvest from the rear side over high-albedo surfaces — such as gravel, light-colored facades, or elevated racking systems — at no additional installation cost. ## Cons - **Efficiency Below Segment Leaders** - The series peaks at 23.0% module efficiency, while direct competitors in the same power class achieve 23.5% (TCL Zhonghuan HSM-BD60-LA Back Contact) and 23.8% (HT-SAAE HT54-18X(N)). On a 20 m² roof area, this gap translates to approximately 160–320 Wp less installed capacity compared to the most efficient alternatives available. - **27 kg Weight — Constraint for Lightweight Structures** - At 27 kg, the module is 3–5 kg heavier than typical single-glass panels in this power class (~22–24 kg). For large rooftop installations on older building stock or lightweight aluminum racking systems, this may necessitate additional structural load verification and increases overall installation labor costs. ## About this series The DAH DHN-60R18/DG (500-520W) series are modules designed to maximize energy yield from the same roof or ground area, thanks to the combination of modern **TOPCon type N** cells and a **bifacial** design. The bifacial operation is particularly effective when there is a clear surface, high light reflection, or when the modules are mounted on a raised structure - energy "from the back" is no longer wasted. The **double-glass** version increases stability and resistance to environmental factors, which will be appreciated by installations exposed to wind, moisture, or intense sunlight. From a practical point of view, this means a lower risk of microcracks and slower degradation of parameters over time, resulting in more predictable energy production. The modules have a **low temperature coefficient**, so they maintain their performance even in hot weather, when many panels noticeably lose power. This is a good choice for prosumers, companies, and PV farms that are looking for high power density, a long operating life, and stable yields in Polish conditions. ## Notable figures - At 23.0% efficiency, this panel is on par with typical \*\*TOPCon 500-550W\*\* modules - Power density of 230.0 W/m² matches the \*\*TOPCon 500-550W\*\* median - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 500-550W\*\* median - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface - #1919 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### What warranty is offered on the DAH Solar DHN-60R18/DG panels (500–520W)? The DHN-60R18/DG series comes with a 25-year product warranty covering material and workmanship defects, as well as a 30-year power output warranty. This means the manufacturer guarantees a specified minimum cell performance for 30 years — one of the longest power warranties available on the market today. Such an extended coverage significantly improves the predictability of return on investment over the long term. ### Does the bifacial design in the DAH Solar DHN-60R18/DG series actually increase energy yield, and when does it make sense? Yes, the bifacial cell construction genuinely increases energy production when the rear side of the module is exposed to reflected irradiance. The greatest gains are achieved in ground-mounted systems installed over high-albedo surfaces such as gravel, concrete, or white roofing membranes. On dark substrates or in flush roof-mount applications with minimal rear-side clearance, the bifacial gain is negligible. The manufacturer estimates additional yield in the range of a few to over ten percent, depending on the albedo of the surrounding environment. ### How does the low temperature coefficient of power affect the performance of the DHN-60R18/DG panels during summer? The DHN-60R18/DG modules feature a Pmax temperature coefficient of just -0.29%/°C, compared to -0.35% to -0.40%/°C typical of older PERC cells. In practice, when a module heats up to 65°C under summer conditions, the DHN-60R18/DG loses significantly less power than PERC-based competitors. On hot days — common during Polish summers — this translates into measurably higher real-world energy production compared to older cell technologies. ### Why is the double-glass version of the DHN-60R18/DG series superior to a standard backsheet-based module? The double-glass construction replaces the conventional polymer backsheet with a second layer of tempered glass. This makes the module substantially more resistant to moisture ingress, microcracks, and potential-induced degradation (PID), while also reducing the risk of mechanical damage during transportation or under high wind loads. For installations exposed to harsh environmental conditions — such as utility-scale PV farms or industrial facilities — this means slower parameter degradation and more stable output throughout the full 30-year warranty period. ### Are the DAH Solar DHN-60R18/DG modules rated up to 520W suitable for large-scale photovoltaic farms? Yes, the DHN-60R18/DG series is designed for both prosumer rooftop installations and commercial utility-scale PV farms. The modules support a system voltage of up to 1500 V, enabling longer strings and reduced balance-of-system (BoS) wiring costs. A peak power of 520 Wp combined with a module efficiency exceeding 22% allows for high installed capacity within a limited land footprint, making the series well suited to projects where area is a constraining factor. ### Is DAH Solar a reputable manufacturer, and will service for the DHN-60R18/DG panels still be available in 10–15 years? DAH Solar is listed on the Bloomberg NEF Tier 1 module manufacturers ranking, meaning the company meets the rigorous financial and manufacturing criteria set by independent analysts. The company operates its own production facilities in China and maintains an extensive service network. Tier 1 status combined with the scale of DAH Solar's operations significantly reduces the risk of the manufacturer exiting the market before the warranty period expires — a critical consideration when selecting modules backed by a 30-year power output warranty. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/en-dhn-60r18-dg-500-520w-0303ee25cb5a.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +1.8 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +40 W, cooler, +1.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +1.7 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +35 W, cooler, +1.6 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | -30 W, lighter, +1.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +1.5 pp | | [DAH Solar DHN-60R20/DG(BB)-495W](https://comparepv.com/panel/dah-dhn-60r20-dg-bb-495w) | 495 W | -25 W, -1.1 pp | | [DAH Solar DHN-60R18/DG-500](https://comparepv.com/panel/dah-dhn-60r18-dg-500) | 500 W | -20 W, -0.9 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +30 W, lighter, +1.4 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +1.4 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | Cooler, lighter, +1.4 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +25 W, cooler, +1.3 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +25 W, cooler, +1.2 pp | --- Source: https://comparepv.com/panel/dah-dhn-60r18-dg-520 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.