--- title: "DAS Solar DAS-DH144NA-555 555W Solar Panel - Specs & Review | ComparePV" description: "DAS Solar DAS-DH144NA-555 555W solar panel. Specs: 21.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/das-solar-das-dh144na-555" updated: 2026-09-11 --- # DAS Solar DAS-DH144NA-555 Middle of its segment, needs the roof space 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** DAS Solar - **Model:** DAS-DH144NA-555 - **Series:** DAS-DH144NA - **Rated power:** 555 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 550-600 W (1018 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 555 W | 580 W | Weak - bottom 5% | | | Module efficiency | 21.50% | 22.44% | Weak - bottom 7% | 7,958 | | Power density | 214.8 | 224.4 | Weak - bottom 7% | 8,034 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight (kg) | 31.3 kg | 31.2 kg | Weak - bottom 16% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.50% | 22.44% | Weak - bottom 7% | 7,958 | | Power density | 214.8 | 224.4 | Weak - bottom 7% | 8,034 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 56.4 | 53.8 | Weak - bottom 16% | 10,639 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **214.8 watts per square metre** - Bottom 7% of the TOPCon 550-600 W segment, against a median of 224.4. Ranked 8,034th in the whole database. - **21.50% module efficiency** - Bottom 7% of the TOPCon 550-600 W segment, against a median of 22.44%. Ranked 7,958th in the whole database. - **56.4 kg per kWp** - Bottom 16% of the TOPCon 550-600 W segment, against a median of 53.8. - **Best for:** Commercial and utility-scale. - **Not ideal for:** Roofs where every square metre has to count, tight roof space and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 555 W - **Efficiency:** 21.50 % - **Voltage at Pmax (Vmp):** 42.37 V - **Current at Pmax (Imp):** 13.10 A - **Open-circuit voltage (Voc):** 51.26 V - **Short-circuit current (Isc):** 13.77 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:** 144 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.3 kg - **Area:** 2.58 m2 - **Power density:** 214.8 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:** 485 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7958 of 14005 | | Power density | 8034 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 10639 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Up to 23.2% Efficiency – Among the Segment's Best** - A peak efficiency of 23.2% places the series on par with the Tongwei TWMND-72HD (23.2%) and just below the Powitt M10 MONO (23.23%), translating to meaningfully higher energy yield from the same rooftop or ground-mount footprint compared to PERC or older N-type modules. - **Low Degradation with N-type TOPCon (\<0.4%/year)** - N-type TOPCon cells deliver an annual degradation rate below 0.4% and a Pmax temperature coefficient of -0.32%/°C – outperforming typical PERC modules at -0.35%/°C. This results in higher yield on hot days and more stable production throughout the full 30-year system life. - **Bifacial Energy Gain of Up to 30% Extra** - With a bifaciality factor of ~80% and a double glass construction, the module can reach a peak output of approximately 679 W (under ground albedo and irradiance conditions specified in the manufacturer's datasheet). This is a significant advantage over conventional monofacial modules in agri-PV installations, and on white membranes, gravel, or light-colored concrete surfaces. - **30-Year Power Warranty – 87.4% Output Guaranteed After 30 Years** - The manufacturer guarantees retention of at least 87.4% of nominal power after 30 years of operation. This is complemented by a 15-year product warranty covering material and workmanship defects – a standard aligned with leading Tier-1 manufacturers in the N-type double glass segment. - **BNEF Tier 1 for Four Consecutive Quarters in 2025** - DAS Solar has maintained BNEF Tier-1 bankable status continuously for all four quarters of 2025 and ranks 8th globally in PV module shipments for H1 2024 (per InfoLink Consulting). This confirms bankability – non-recourse debt financing from independent banks is a realistic option for projects using these modules. ## Cons - **Short Brand History vs. a 30-Year Warranty** - DAS Solar was founded in 2018, giving it only ~8 years of market history against a 30-year power warranty. Unlike Trina Solar (est. 1997) or JA Solar (est. 2005), the absence of a long-term track record can be raised as a risk factor by insurers or project finance banks underwriting large-scale PV projects – even with BNEF Tier-1 status. ## About this series The DAS Solar DAS-DH144NA series are bifacial modules featuring a double glass structure, designed for high energy production not only from the front side but also from the rear - where reflected light utilisation (bright roof, gravel, membrane, ground) plays a key role. The use of N-type cells helps limit performance degradation over time and stabilises the installation's operation in demanding conditions. The double glass construction and symmetrical layer arrangement increase resistance to typical operational issues, such as micro-prestresses and accelerated material aging, which is crucial for projects focused on a long return on investment horizon. These modules also stand out for their good performance under low-light conditions, making them better suited for cloudy days, common in Poland's climate. This is a sensible choice for PV farms, commercial installations, and large rooftops, where reliable yield, durability, and real competitive advantage over traditional single-sided panels are key. ## Notable figures - Efficiency of 21.5% is 0.9pp below the \*\*TOPCon 550-600W\*\* median (22.4%) - Power density of 214.8 W/m² is 9.6 W/m² below \*\*TOPCon 550-600W\*\* median (224.4 W/m²) - needs more roof space - At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 550-600W\*\* panels - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces - #7958 for efficiency, #6093 for temperature performance out of 14005 panels ## Questions ### What warranty is provided for the DAS Solar DAS-DH144NA panels? The DAS-DH144NA series comes with a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. After 30 years, the panel is guaranteed to retain at least 87.4% of its initial rated power. This is one of the longest warranties available on the market and is a key factor when calculating the return on investment for a utility-scale PV farm or commercial installation. ### Are the DAS-DH144NA panels suitable for ground-mounted systems and utility-scale PV farms? Yes, the DAS-DH144NA series is designed primarily for large-scale ground-mounted installations and utility PV farms. The bifacial double-glass construction allows the module to harvest energy from light reflected off bright ground surfaces — such as gravel, white membrane, or light-gray soil — meaningfully increasing annual energy yield. The panel withstands snow loads up to 5,400 Pa and wind loads up to 2,400 Pa, ensuring structural integrity under demanding field conditions. ### How does the TOPCon technology used in the DAS-DH144NA differ from standard PERC cells? N-type TOPCon cells feature a lower temperature coefficient of power (approximately -0.30%/°C) compared to typical P-type PERC cells (-0.35%/°C), resulting in reduced power losses on hot days. In addition, total degradation over the module's lifetime is minimized, and the risk of LID (Light-Induced Degradation) is virtually eliminated. As a result, the DAS-DH144NA generates more energy over its entire operational lifespan compared to an installation based on PERC modules of the same nominal rated power. ### Do the DAS-DH144NA panels perform efficiently in the Polish climate with low irradiance conditions? Yes, the DAS-DH144NA series is optimized for operation under diffuse and low-irradiance conditions typical of overcast days in Poland. The TOPCon cell technology combined with bifacial architecture enables superior conversion of soft, diffuse light compared to conventional monofacial modules. In practice, this translates into higher energy yield during transitional months — March–April and October–November — when PERC-based panels experience a more noticeable drop in performance. ### How much does a DAS Solar DAS-DH144NA panel weigh, and does it require a special mounting structure? The DAS-DH144NA series panel weighs approximately 31.3 kg, with dimensions of 2,278 × 1,134 × 30 mm. Due to its weight and double-glass construction — consisting of two tempered glass panes — it requires a robust, dual-rail racking structure with clamps rated for either framed or frameless modules. For large-scale installations, this weight must be factored into the structural engineering design of the roof or ground-mounted racking system. ### Is DAS Solar a reliable manufacturer, and does the DAS-DH144NA series hold the necessary certifications? DAS Solar is listed on the Bloomberg NEF Tier 1 module manufacturer list, confirming the company's financial stability and manufacturing credibility. The DAS-DH144NA series modules carry IEC 61215 and IEC 61730 certifications (performance and safety), IEC 61701 (salt mist corrosion resistance), and IEC 62716 (ammonia resistance). These certifications are required by the majority of banks and insurers involved in financing utility-scale PV farm projects. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Datasheet-DAS-DH144NA-xxx_575-590-2bf2a2e1eed5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.1 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, 15 kg lighter, +2.9 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +2.9 pp | | [DAS Solar DAS-WH144PA-540W](https://comparepv.com/panel/das-solar-das-wh144pa-540w) | 540 W | Hotter, lighter, -5 yr warranty | | [DAS Solar DAS-DH144PA-545W](https://comparepv.com/panel/das-solar-das-dh144pa-545w) | 545 W | -10 W, hotter, -0.4 pp | | [DAS Solar DAS-DH144PA-550W](https://comparepv.com/panel/das-solar-das-dh144pa-550w) | 550 W | Hotter | | [DAS Solar DAS-DH144PA-560W](https://comparepv.com/panel/das-solar-das-dh144pa-560w) | 560 W | Hotter | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +95 W, lighter, +3.7 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +90 W, lighter, +3.5 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +85 W, lighter, +3.3 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +80 W, lighter, +3.1 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +75 W, cooler, +2.9 pp | --- Source: https://comparepv.com/panel/das-solar-das-dh144na-555 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.