--- title: "DAS Solar DAS-WH144PA-545W 545W Solar Panel - Specs & Review | ComparePV" description: "DAS Solar DAS-WH144PA-545W 545W solar panel. Specs: 21.10% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/das-solar-das-wh144pa-545w" updated: 2026-09-11 --- # DAS Solar DAS-WH144PA-545W Light for its output, short guarantee 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** DAS Solar - **Model:** DAS-WH144PA-545W - **Series:** DAS-WH144PA - **Rated power:** 545 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 500-550 W (706 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 545 W | 535 W | Strong - top 12% | | | Module efficiency | 21.10% | 20.90% | Strong - top 20% | 9,297 | | Power density | 211.0 | 209.0 | Strong - top 18% | 9,312 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 23% | 8,778 | | Weight (kg) | 27.3 kg | 28.4 kg | Strong - top 17% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.10% | 20.90% | Strong - top 20% | 9,297 | | Power density | 211.0 | 209.0 | Strong - top 18% | 9,312 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 23% | 8,778 | | Weight per kWp | 50.1 | 53.0 | Strong - top 17% | 3,596 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Strengths - **50.1 kg per kWp** - Top 17% of the PERC 500-550 W segment, against a median of 53.0. - **211.0 watts per square metre** - Top 18% of the PERC 500-550 W segment, against a median of 209.0. - **21.10% module efficiency** - Top 20% of the PERC 500-550 W segment, against a median of 20.90%. ### Watch out for - **25 year performance warranty** - Bottom 23% of the PERC 500-550 W segment, against a median of 30 yrs. - **Best for:** Commercial, utility-scale, shaded-installations and hot-climate. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 545 W - **Efficiency:** 21.10 % - **Voltage at Pmax (Vmp):** 41.83 V - **Current at Pmax (Imp):** 13.03 A - **Open-circuit voltage (Voc):** 49.68 V - **Short-circuit current (Isc):** 13.91 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 27.3 kg - **Area:** 2.58 m2 - **Power density:** 211.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 86.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 455 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9297 of 14005 | | Power density | 9312 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 3596 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Confirmed BNEF Tier 1 Status** - DAS Solar has appeared on the BloombergNEF Tier 1 list on multiple occasions, as confirmed by PV Magazine and official manufacturer communications. Bankable status is critical for financing commercial projects and utility-scale PV plants — lenders require modules from Tier 1-listed manufacturers as a condition of non-recourse project debt. - **Half-Cut 144-Cell Format + SMBB** - The 144 half-cut cell format reduces partial-shading losses by approximately 50% compared to full-size cells. The multi-busbar SMBB architecture improves current collection across the cell surface and enhances resistance to microcracks caused by thermomechanical stress over the module's service life. - **Low NMOT (~43°C)** - The nominal module operating temperature of ~43°C is below the typical segment benchmark of ~45°C. With a Pmax temperature coefficient of -0.35%/°C, this 2°C difference translates to approximately 0.7% higher energy yield under real-world operating conditions — a meaningful advantage for installations with limited airflow, such as flat rooftops or dense building-integrated arrays. - **Efficiency Up to 21.7% — Benchmark-Level Performance** - The top variant in the series (560 Wp) achieves 21.7% module efficiency, matching direct competitors such as the Exiom EX540-560M(B) (21.7%) and Goldi Solar GS10-B144-GF (21.7%). The series is therefore fully competitive with the leading monofacial PERC 144-cell modules on the market. ## Cons - **P-Type PERC vs. the Dominant TOPCon Technology** - P-type PERC technology exhibits higher first-year degradation (LID ~2%) and higher annual degradation (~0.55–0.70%/year) than N-type TOPCon modules (~1% and ~0.25–0.40%/year, respectively). In 2024, TOPCon surpassed PERC as the dominant technology, accounting for approximately 66% of global production capacity. Notably, DAS Solar itself now positions as a TOPCon 5.0 leader — making this series a previous-generation product within the manufacturer's own portfolio. - **Monofacial Only** - The absence of a bifacial option limits performance potential in installations over high-albedo surfaces (gravel, white TPO membrane, light-colored concrete), where bifacial modules typically generate 5–20% additional energy from reflected irradiance. Direct competitor Premier Energies offers a bifacial dual-glass module in the same power class (up to 560 Wp, 21.67% efficiency), and the Exiom EX540-560M(B) includes a bifacial variant within the same product family. ## About this series The DAS Solar DAS-WH144PA series consists of monocrystalline modules featuring a 144-half-cell configuration, designed for reliable operation in demanding field and rooftop conditions. Utilizing **half-cut** technology effectively minimizes power losses under partial shading and enhances energy yield in layouts where rows of modules may intermittently shade each other. The **MBB/SMBB** multi-string construction is also noteworthy, as it optimizes current collection from the cell surface and increases resistance to micro-cracks and material fatigue during operation. The DAS-WH144PA also stands out due to its **low operating temperature (low NMOT)**, ensuring more predictable energy generation during hot days-particularly beneficial for installations with limited ventilation. The manufacturer highlights its **strong performance in low light conditions**, enabling modules to start generating power earlier in the morning and operate longer into the evening. This makes it an excellent choice for PV farms and larger commercial installations, where consistent energy yield and resilience to operating conditions are key factors. ## Notable figures - Efficiency of 21.1% matches the \*\*PERC 500-550W\*\* median - Power density of 211.0 W/m² matches the \*\*PERC 500-550W\*\* median - Temperature coefficient of -0.34%/°C matches the \*\*PERC 500-550W\*\* median - Weight of 27.3 kg (1.1 kg below \*\*PERC 500-550W\*\* median of 28.4 kg) allows easier transport and roof mounting - #9297 for efficiency, #8778 for temperature performance out of 14005 panels ## Questions ### What warranty does DAS Solar offer on the DAS-WH144PA panels? The manufacturer provides a 12-year product warranty on the DAS-WH144PA modules along with a 25-year linear power output warranty. This means the panel is guaranteed to maintain a specified minimum energy yield for a quarter of a century. This is a standard, fully industry-accepted warranty offering, comparable to those provided by other Tier 1 manufacturers. ### Are the DAS-WH144PA panels suitable for large commercial installations or utility-scale PV farms? Yes, the DAS-WH144PA series is designed primarily for utility-scale PV farms and larger commercial installations. The 144 half-cut cell format and power output of up to 560 Wp reduce the number of modules required to reach the target system capacity. The half-cut technology also minimizes losses from partial row shading, which is a common challenge in large-scale module arrays. ### How does half-cut cell technology affect the performance of the DAS-WH144PA panels under partial shading conditions? In half-cut modules, each cell is laser-cut in half, allowing each half-cell to operate independently. When part of the panel falls into shadow — for example, from a pole, a tree, or an adjacent module row — energy losses are confined only to the shaded segments, while the remaining portion of the panel continues to generate power. In conventional full-cell modules, shading a single cell can effectively disable the entire series string. ### Do the DAS-WH144PA panels perform well during summer at high ambient temperatures? The DAS-WH144PA series features a low Nominal Module Operating Temperature (NMOT of approximately 43 °C), meaning the panel heats up more slowly than many competing modules. This directly translates into higher energy production on hot days, when standard PERC panels can lose several percentage points of output power due to elevated cell temperatures. ### Is DAS Solar a reliable manufacturer, and are its panels available in Poland? DAS Solar is classified as a Tier 1 manufacturer, meaning it meets the rigorous financial and production criteria assessed by independent PV industry rating agencies. Panels from this brand are available through Polish distributors and photovoltaic wholesale suppliers. The manufacturer is headquartered in China, and its production facilities hold IEC certifications. ### What is the difference between the DAS-WH144PA and DAS Solar's bifacial modules? The DAS-WH144PA is a monofacial module, meaning it generates energy exclusively from the front side of the panel. Bifacial counterparts from the same brand — such as those in the DAS-DH144PA series — additionally harvest energy from light reflected off the ground surface through a transparent rear glass. The DAS-WH144PA is the preferred choice in applications where bifacial mounting offers no practical benefit: on dark rooftops, in ground-mounted installations with low albedo surfaces, or where the inverter does not support the additional rear-side energy yield. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/das-wh144pa-en-540-560-ef-bc-882278-1134-35-ef-bc-89-572745a5daf6.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +3.9 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.7 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +3.6 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.5 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +3.4 pp, +5 yr warranty | | [DAS Solar DAS-WH144PA-540W](https://comparepv.com/panel/das-solar-das-wh144pa-540w) | 540 W | -0.2 pp | | [DAS Solar DAS-DH144PA-550W](https://comparepv.com/panel/das-solar-das-dh144pa-550w) | 550 W | Heavier, +5 yr warranty | | [DAS Solar DAS-DH144PA-555W](https://comparepv.com/panel/das-solar-das-dh144pa-555w) | 555 W | Heavier, +0.4 pp, +5 yr warranty | | [DAS Solar DAS-DH144PA-560W](https://comparepv.com/panel/das-solar-das-dh144pa-560w) | 560 W | Heavier, +0.6 pp, +5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +105 W, cooler, +4.1 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +85 W, cooler, +3.3 pp | --- Source: https://comparepv.com/panel/das-solar-das-wh144pa-545w Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.