--- title: "DAS Solar DAS-DH120NA-475 475W Solar Panel - Specs & Review | ComparePV" description: "DAS Solar DAS-DH120NA-475 475W solar panel. Specs: 22.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/das-solar-das-dh120na-475" updated: 2026-09-11 --- # DAS Solar DAS-DH120NA-475 Middle of its segment, modest efficiency 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** DAS Solar - **Model:** DAS-DH120NA-475 - **Series:** DAS-DH120NA - **Rated power:** 475 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) | 475 W | 465 W | Typical | | | Module efficiency | 22.00% | 22.52% | Weak - bottom 18% | 6,517 | | Power density | 220.1 | 225.2 | Weak - bottom 18% | 6,632 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight (kg) | 26.0 kg | 24.0 kg | Weak - bottom 18% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.00% | 22.52% | Weak - bottom 18% | 6,517 | | Power density | 220.1 | 225.2 | Weak - bottom 18% | 6,632 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight per kWp | 54.7 | 52.2 | Weak - bottom 18% | 9,139 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **22.00% module efficiency** - Bottom 18% of the TOPCon 450-500 W segment, against a median of 22.52%. - **220.1 watts per square metre** - Bottom 18% of the TOPCon 450-500 W segment, against a median of 225.2. - **54.7 kg per kWp** - Bottom 18% of the TOPCon 450-500 W segment, against a median of 52.2. - **Best for:** Commercial and hot-climate. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 475 W - **Efficiency:** 22.00 % - **Voltage at Pmax (Vmp):** 36.10 V - **Current at Pmax (Imp):** 13.16 A - **Open-circuit voltage (Voc):** 42.88 V - **Short-circuit current (Isc):** 13.80 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1903 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.0 kg - **Area:** 2.16 m2 - **Power density:** 220.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 415 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6517 of 14005 | | Power density | 6632 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 9139 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon – LID Elimination and Low Temperature Coefficient** - N-type TOPCon cells deliver a Pmax temperature coefficient of approximately -0.28%/°C (based on data for the closely related DAS-DH120ND series), a clear improvement over typical PERC cells (~-0.35%/°C). The absence of light-induced degradation (LID) ensures more stable output throughout the system's lifetime, with the greatest benefit realized during the first years of operation. - **Bifacial Dual-Glass Construction – Measurable Yield Gain** - The bifacial dual-glass design captures an additional 5–15% of energy from reflected irradiance — up to 25–30% in typical ground-mounted installations with high-albedo surfaces. The double-glass laminate eliminates EVA degradation and provides resistance to chemical corrosion (ammonia, salt mist), making it particularly well suited for agri-PV and coastal installations. - **30-Year Linear Power Warranty** - The manufacturer guarantees power output for 30 years, exceeding the 25-year standard common among mid-range competitors. For peer comparables (e.g., Horay Solar HS 182-120 TC), no publicly documented warranty period longer than 25–30 years has been recorded, placing the DAS-DH120NA at the upper boundary of the industry benchmark. - **Confirmed Bankability: BNEF Tier 1 + Grade A Rating** - DAS Solar is listed on the BNEF Tier 1 Global PV Module Manufacturers list and received a Grade A rating in the PV ModuleTech Bankability Ratings Q3 2024 report. The series was also recognized as a Top Performer in the Kiwa PVEL 2024 PV Module Reliability Scorecard, providing independent, third-party validation of manufacturing quality. - **21.5–22.7% Efficiency – Competitive with Segment Leaders** - The peak efficiency of 22.7% is on par with the best peer comparables: the Renesola RS4-470~490NX-E1 achieves 22.71%, as does the DAH Solar DHN-60X16/DG at 22.71%. The series matches segment leaders in power density, a critical advantage where rooftop or ground area is constrained. ## Cons - **Series Discontinued** - The DAS-DH120NA (launched 2022) is officially designated as discontinued. This means no new supply is available directly from the manufacturer, capacity expansion is limited by the inability to source additional matching modules, and replacing a failed panel after several years may present significant compatibility challenges. - **Limited Brand Track Record (Founded 2018)** - DAS Solar was founded in August 2018, meaning the company had only four years of operating history at the time this series was released in 2022. By comparison, Jinko Solar has been operating since 2006, LONGi since 2000, and Trina Solar since 1997. Despite its Tier 1 status, the shorter track record may be considered a risk factor when evaluating the credibility of the 30-year warranty. - **Manufacturer Ownership Uncertainty** - In August 2024, the Shenzhen Stock Exchange rejected DAS Solar's IPO application, and in September 2024 reports emerged of a planned acquisition by CATL. The combination of a failed public listing and a potential change in ownership structure raises questions about the continuity of warranty obligations for a series that has already been discontinued. ## About this series The DAS-DH120NA series consists of advanced bifacial modules that utilize breakthrough N-type TOPCon cell technology, providing significantly higher efficiency than standard P-type solutions. Thanks to the **bifacial dual glass** construction, these panels effectively absorb light reflected from the ground, resulting in a real increase in energy yields even in challenging lighting conditions. A key differentiator is the minimal power degradation and excellent temperature coefficient, allowing the installation to maintain maximum performance even on hot days. The use of **N-type technology** eliminates the problem of the LID effect, guaranteeing long-term stability of electricity production and a faster return on investment. These modules are an ideal choice for those seeking the highest durability, as the double glass layer provides exceptional **resistance to extreme weather conditions** and corrosive factors such as ammonia or salt mist. DAS-DH120NA is perfect for both demanding ground-mounted installations and commercial rooftops, where maximizing power from limited space is crucial. Compared to the competition, this series offers an unrivaled balance between **high conversion efficiency** and mechanical strength, making it one of the safest choices in the premium segment for modern photovoltaics. ## Notable figures - At 22.0% efficiency, this panel is 0.5pp below the \*\*TOPCon 450-500W\*\* median of 22.5% - Power density of 220.1 W/m² is 5.1 W/m² below \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - needs more roof space - At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 450-500W\*\* panels - At 26.0 kg, this panel is 2.0 kg heavier than the \*\*TOPCon 450-500W\*\* median (24.0 kg) - more demanding for installation crews - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### Is the DAS Solar DAS-DH120NA series still available for purchase? The DAS-DH120NA series has been discontinued and is no longer offered as a new product through official distributors. Isolated units may surface from existing warehouse stock, but availability is extremely limited. If you are looking for N-type TOPCon bifacial modules from DAS Solar, it is worth considering the manufacturer's newer series, which deliver comparable or superior technical specifications. ### What warranty is provided for DAS Solar DAS-DH120NA panels? The manufacturer offered a 15-year product warranty on DAS-DH120NA modules, covering defects in materials and workmanship. In addition, a 30-year linear power output warranty applied, guaranteeing that the modules retain a defined percentage of their rated power output throughout that period. This is one of the longest warranty standards in the photovoltaic industry and is typical of the premium segment. ### What is a bifacial dual-glass panel, and is it worth installing on a rooftop? A bifacial dual-glass panel, such as the DAS-DH120NA, features two glass layers in place of a rear backsheet and generates electricity from both sides — from the front via direct irradiance and from the rear via light reflected off the ground or rooftop surface. On high-albedo substrates (white membrane, gravel, snow), the bifacial energy gain can reach 5–15% annually. On a dark roof the bifacial effect is minimal; however, the dual-glass construction still delivers exceptional mechanical durability and moisture resistance. ### How does the N-type TOPCon technology in the DAS-DH120NA differ from mainstream PERC panels? The N-type TOPCon cells used in the DAS-DH120NA have a superior temperature coefficient (approximately -0.30 %/°C versus roughly -0.35 %/°C for P-type PERC) and virtually zero light-induced degradation (LID), which in P-type panels can cause power losses of up to 1–3% within the first hours of operation. This translates into higher energy yields over the entire service life and slower long-term degradation of the 490 W rated power output. ### Do DAS-DH120NA panels perform well on hot days and at elevated temperatures? Yes. Thanks to N-type TOPCon technology, the DAS-DH120NA modules feature a low power temperature coefficient (approx. -0.30 %/°C), which means reduced power losses at high cell temperatures compared to standard P-type panels. At a typical module operating temperature of 65 °C on a summer day, the energy yield advantage over older technologies can amount to several percentage points in favor of the DAS-DH120NA. ### Are the DAS-DH120NA 490 W modules suitable for ground-mount and commercial installations? Yes. The DAS-DH120NA series, with a peak power output of 490 W and a dual-glass construction, was designed with demanding ground-mount systems and commercial rooftops in mind. The dual-glass structure provides resistance to ammonia and salt mist, which is particularly important in agricultural or coastal environments. The high per-module power output maximizes energy harvest from the limited roof area typical of industrial buildings and warehouses. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Datasheet-DAS-DH120NA-xxx_465-490-2a6339e57836.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +35 W, cooler, +3.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +30 W, cooler, +2.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +25 W, cooler, +2.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +2.5 pp | | [DAS Solar DAS-DH120NA-465](https://comparepv.com/panel/das-solar-das-dh120na-465) | 465 W | -10 W, -0.5 pp | | [DAS Solar DAS-DH120NA-470](https://comparepv.com/panel/das-solar-das-dh120na-470) | 470 W | Very close match | | [DAS Solar DAS-DH120NA-480](https://comparepv.com/panel/das-solar-das-dh120na-480) | 480 W | Very close match | | [DAS Solar DAS-DH120NA-485](https://comparepv.com/panel/das-solar-das-dh120na-485) | 485 W | +10 W, +0.5 pp | | [DAS Solar DAS-DH120NA-490](https://comparepv.com/panel/das-solar-das-dh120na-490) | 490 W | +15 W, +0.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +85 W, cooler, +2.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +80 W, cooler, +2.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +75 W, lighter, +2.4 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +65 W, cooler, +2.4 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +65 W, cooler, +2.4 pp | --- Source: https://comparepv.com/panel/das-solar-das-dh120na-475 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.