--- title: "DAH Solar DHN-60R18/DG(BB)-520W 520W Solar Panel - Specs & Review | ComparePV" description: "DAH Solar DHN-60R18/DG(BB)-520W 520W solar panel. Specs: 23.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dah-dhn-60r18-dg-bb-520w" updated: 2026-09-11 --- # DAH Solar DHN-60R18/DG(BB)-520W Solid all-round for its segment 432 panels in the segment TOPCon 500-550 W ## Identity - **Manufacturer:** DAH Solar - **Model:** DHN-60R18/DG(BB)-520W - **Series:** DHN-60R18/DG(BB) 495~520W - **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 - **Output guaranteed at end of warranty:** 87.4 % - **Output after 30 years:** 454 W ## 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 - **Outstanding Temperature Coefficient** - The Pmax temperature coefficient of -0.29%/°C significantly outperforms standard PERC modules (-0.35 to -0.40%/°C). On hot summer days with a cell temperature of 70°C, the DHN-60R18 series incurs a power loss of ~14.2% versus ~17.5% for a typical PERC module — translating to measurably higher energy yield during peak-generation season. - **30-Year Linear Power Warranty** - The manufacturer guarantees ≥89.4% of rated power after 25 years and ≥87.4% after 30 years. Peer comparables in this segment (HT-SAAE, TCL Zhonghuan) do not offer an extended 30-year warranty — a meaningful differentiator for commercial project financing with long debt-repayment horizons. - **Double-Glass Construction — Superior Mechanical Durability** - The module withstands snow loads up to 5,400 Pa and wind loads up to 2,400 Pa. The dual-glass architecture eliminates backsheet perforation risk and significantly extends resistance to moisture ingress and PID, making it particularly well-suited for ground-mount and flat-roof installations. - **Bifacial Design — Rear-Side Energy Gain** - The bifacial cell architecture, paired with a suitable ground surface (white membrane, gravel, snow), delivers 5–25% additional energy yield compared to a monofacial module of equivalent nameplate power. This advantage is especially valuable in ground-mount systems and flat-roof installations with high-albedo surfaces. - **BNEF Tier 1 — Bankable Manufacturer** - DAH Solar has maintained BloombergNEF Tier 1 status for consecutive quarters (confirmed Q4 2025 and Q1 2026), reducing financing risk and satisfying the bankability requirements of most lenders for PV projects above 100 kWp. ## Cons - **Efficiency Below Segment Leaders** - The series reaches a maximum module efficiency of 23.0%, while the HT-SAAE HT54-18X(N) achieves 23.8% and the TCL Zhonghuan Back Contact 23.5%. On a roof with limited area, the 0.8 percentage-point gap translates to approximately 3–4% less peak power for an identical module count. - **27 kg Weight — Constraints for Lightweight Roof Structures** - The double-glass construction increases module weight to ~27 kg, approximately 25–30% heavier than comparable monofacial modules with a polymer backsheet (~20–22 kg). This may require structural load verification and complicates single-person handling, raising installation costs on buildings with lower load-bearing capacity. ## About this series The DAH DHN-60R18/DG(BB) 495~520W series are modules designed to maximize power output from the same roof or ground area - thanks to high efficiency and optimized performance at elevated temperatures, which effectively helps to reduce summer production losses. The use of **N-type cells in TOPCon technology** ensures stable performance over time and better resistance to typical degradation mechanisms, which in practice means more predictable yields over the years. The **double glass** construction strengthens the module and improves resistance to loads and environmental conditions, making this series suitable not only for residential buildings, but also for commercial installations, flat roofs, and ground-mounted projects. Furthermore, the **sleek black design** makes it easy to match with modern rooflines and structures. A key advantage over many standard panels is the combination of **long linear warranties** with a technology focused on long-term performance - for investors who want to minimize risk and maintenance costs. ## Notable figures - At 23.0% efficiency, this panel is on par with typical \*\*TOPCon 500-550W\*\* modules - At 230.0 W/m² power density, roof space requirements are typical for \*\*TOPCon 500-550W\*\* panels - 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 - In the top 14% for efficiency among all TOPCon panels ## Questions ### What warranty is provided for the DAH Solar DHN-60R18/DG(BB) 495–520W series panels? The DHN-60R18/DG(BB) series comes with a 25-year product warranty covering manufacturing defects and a 30-year linear power output warranty. After 25 years, the manufacturer guarantees at least 89.4% of nominal power, and after 30 years — at least 87.4%. This is one of the longest power warranties available on the market, making these panels a compelling choice for long-term energy investments. ### Are the DAH Solar DHN-60R18/DG(BB) panels bifacial, and what does that mean in practice? Yes, the DHN-60R18/DG(BB) series are bifacial modules — they absorb light from both the front and rear sides, including light reflected from the ground surface or roofing membrane. The bifaciality factor is approximately 85%, which under favorable conditions (light-colored flooring, bright ground surface, or flat roof with a white TPO/PVC membrane) can translate into 5–25% higher energy yield compared to standard monofacial panels. ### How do the DAH Solar DHN-60R18/DG(BB) 520W panels perform on hot days? The power temperature coefficient of this series is just -0.29%/°C, which outperforms typical P-type panels (approximately -0.35%/°C). This means the modules lose less output at elevated roof temperatures. The N-type TOPCon cell technology further reduces the risk of temperature-induced degradation, making this series perform better than market-standard panels during hot summer days. ### Is the double glass construction of the DAH DHN-60R18/DG(BB) series suitable for flat roofs and ground-mounted systems? Yes, the double glass construction provides resistance to snow loads up to 5,400 Pa and wind loads up to 2,400 Pa, along with superior protection against moisture, acids, salt, and UV radiation. As a result, the DHN-60R18/DG(BB) series is an excellent fit for flat roofs with EPDM or TPO membranes, ground-mounted installations, and demanding industrial environments. ### What are the dimensions and weight of the DAH Solar DHN-60R18/DG(BB) 520W panel — is self-installation feasible? The module measures 1,994 × 1,134 × 30 mm and weighs approximately 27 kg. Due to its glass-glass construction, it is heavier than standard backsheet modules (typically 20–23 kg). While self-installation is technically possible, at this weight a minimum two-person crew is strongly recommended. Installation requires appropriate clamps and mounting profiles rated for framed double glass modules. ### How do the N-type TOPCon cells in the DAH DHN-60R18/DG(BB) series differ from mainstream P-type panels? N-type TOPCon cells exhibit lower light-induced degradation (LID) and reduced light and elevated temperature induced degradation (LeTID) compared to P-type PERC cells. In practice, this means the DHN-60R18/DG(BB) panels retain higher output during the first months of operation and degrade more slowly over the full 25–30-year service life. Module efficiency reaches up to 23%, delivering more energy from the same roof area. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/en-dhn-60r18-dg-bb-495-520w-c234ecb63854.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-bb-520w 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.