--- title: "DAS Solar DAS-DH108NA-415W 415W Solar Panel - Specs & Review | ComparePV" description: "DAS Solar DAS-DH108NA-415W 415W solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/daon-das-dh108na-415w" updated: 2026-09-11 --- # DAS Solar DAS-DH108NA-415W Middle of its segment, needs the roof space 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** DAS Solar - **Model:** DAS-DH108NA-415W - **Series:** mini Bifacial Double Glass Module - **Rated power:** 415 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 415 W | 435 W | Weak - bottom 9% | | | Module efficiency | 21.30% | 22.00% | Weak - bottom 13% | 8,519 | | Power density | 212.5 | 220.2 | Weak - bottom 10% | 8,791 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight (kg) | 23.7 kg | 22.0 kg | Weak - bottom 13% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 22.00% | Weak - bottom 13% | 8,519 | | Power density | 212.5 | 220.2 | Weak - bottom 10% | 8,791 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 57.1 | 51.4 | Weak - bottom 13% | 11,048 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **212.5 watts per square metre** - Bottom 10% of the TOPCon 400-450 W segment, against a median of 220.2. - **21.30% module efficiency** - Bottom 13% of the TOPCon 400-450 W segment, against a median of 22.00%. - **57.1 kg per kWp** - Bottom 13% of the TOPCon 400-450 W segment, against a median of 51.4. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Roofs where every square metre has to count, tight roof space and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 415 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 31.68 V - **Current at Pmax (Imp):** 13.10 A - **Open-circuit voltage (Voc):** 38.41 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:** 108 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.7 kg - **Area:** 1.95 m2 - **Power density:** 212.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 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:** 363 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8519 of 14005 | | Power density | 8791 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 11048 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon: Temperature Coefficient of -0.30%/°C** - N-type TOPCon cells achieve a Pmax temperature coefficient of -0.30%/°C, compared to -0.35%/°C for standard P-type PERC modules. This translates into measurably higher energy yield under high-temperature conditions (above 25°C), with a direct impact on real-world kWh output during summer months. - **30-Year Power Warranty with 87.4% Retention** - The manufacturer guarantees a minimum of 87.4% of nominal power output after 30 years of operation. Peer-comparable modules in this class — including the AE Solar AURORA and Aptos Solar DNA-108 — typically carry a 25-year linear power warranty, making this series stand out in terms of long-term investment protection. - **80% Bifaciality — Additional Yield from the Rear Side** - A bifaciality factor of up to 80% enables meaningful additional energy generation from the module's rear surface — according to manufacturer data, between 10% and 30% depending on ground albedo and mounting angle. This results in a lower LCOE compared to monofacial equivalents in the same power class. - **Double Glass Construction Eliminates PID and Backsheet Corrosion** - Encapsulating the cells between two glass layers fully eliminates the risk of Potential Induced Degradation (PID) and backsheet corrosion. Additionally, dual-glass modules offer mechanical load resistance of 5,400 Pa (wind) and 7,000 Pa (snow) — a significant advantage under central European winter conditions. - **BNEF Tier 1 Status and PV ModuleTech 'A' Bankability Rating** - DAS Solar is listed on the BNEF Tier 1 manufacturer list (confirmed for Q2 2025) and has received an 'A' bankability rating in the PV ModuleTech Q2 2025 ranking published by PV Tech. This level of bankability materially reduces project financing risk and facilitates debt financing for commercial-scale installations. ## Cons - **Series Discontinued (Since 2022)** - Although introduced in 2022, this series is designated as discontinued. This limits the availability of matching modules for future system expansions, complicates access to warranty service, and introduces the risk of unavailable replacement components. These factors represent a material risk for long-term installations with a projected payback period exceeding 10 years. - **Manufacturer Founded in 2018 — Limited Market Track Record** - DAS Solar has been operating since 2018, meaning the company will have less than 10 years of track record at the time of product warranty expiration (25 years). Despite holding BNEF Tier 1 status, the absence of a long-term warranty claims history is a potential risk factor regarding a relatively young company's ability to honor its 30-year power warranty obligations. ## About this series The DAS Solar mini Bifacial Double Glass Module series redefines performance standards in the premium compact photovoltaic module segment. The key technological differentiator of this line is the use of innovative **N-type TOPCon** cells, which guarantee significantly higher efficiency and minimal power degradation over the long term. Thanks to the symmetrical **Double Glass** design, these panels exhibit extreme resistance to negative external factors such as moisture, salt, or heavy mechanical loads, making them a safe investment for decades. Advanced bifacial technology allows for the generation of **additional energy yield** from the rear side of the module, which, combined with an excellent temperature coefficient, ensures the system operates more efficiently on hot days and in diffused light conditions. This model effectively solves the problem of limited installation space on residential and commercial roofs, offering maximum power density while maintaining a smaller weight and size. It is the optimal choice for investors seeking **aesthetic and durable solutions** that outperform conventional competition in terms of yield stability and material durability. The use of glass on both sides completely eliminates the risk of chemical corrosion and minimizes the PID phenomenon, ensuring trouble-free operation of the installation for over thirty years of use. ## Notable figures - At 21.3% efficiency, this panel is 0.7pp below the \*\*TOPCon 400-450W\*\* median of 22.0% - Power density of 212.5 W/m² is 7.7 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - needs more roof space - At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - At 23.7 kg (1.7 kg above \*\*TOPCon 400-450W\*\* median of 22.0 kg), requires checking roof load capacity - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What is the warranty coverage for the DAS Solar mini Bifacial Double Glass Module series? The DAS Solar mini Bifacial Double Glass Module series is covered by a 25-year product warranty (materials and workmanship) and a 30-year linear power output warranty. After 30 years of operation, the manufacturer guarantees that the module will retain at least 87.4% of its original rated power output. This is one of the longest warranty packages available in the compact premium-module segment, reflecting the manufacturer's confidence in the long-term durability of the glass-glass construction. ### Are the DAS Solar mini Bifacial Double Glass panels suitable for installation on a small residential rooftop? Yes, the mini Bifacial Double Glass series was specifically designed with limited mounting space in mind. The compact module dimensions (approximately 1.7 × 1.1 m) combined with a rated power of up to 415 Wp allow a high system output to be achieved with fewer panels. With module efficiency reaching 22.3%, every square meter of roof area generates more energy than would be possible with older P-type technology. ### What is N-type TOPCon cell technology, and why should it be chosen over conventional panels? TOPCon (Tunnel Oxide Passivated Contact) is a silicon cell architecture in which an ultrathin silicon oxide layer combined with doped polysilicon is deposited on the rear cell surface. The result is higher conversion efficiency (above 22%), improved performance under diffuse light conditions, and a lower annual degradation rate compared to the widely used PERC cells. For the end investor, this translates into more kilowatt-hours generated per year and more stable energy yield over the entire system lifetime, ultimately shortening the return on investment period. ### Do the bifacial DAS Solar mini Bifacial Double Glass panels actually generate more electricity than monofacial modules? Yes. With a bifaciality factor of up to 80%, the rear side of the module captures light reflected from the ground, rooftop surface, or surrounding environment, producing additional energy. In practice, the bifacial energy gain typically ranges from 5% to 15%, depending on the albedo of the mounting surface and the tilt angle of the array. Combined with a low temperature coefficient of -0.3%/°C, the panels lose less power on hot days, further increasing annual energy production. ### Why does the DAS Solar mini Bifacial Double Glass series use a dual-glass construction, and does it significantly increase the module weight? The Double Glass construction replaces the conventional polymer backsheet with a second pane of tempered glass. This eliminates chemical corrosion pathways, minimizes the potential-induced degradation (PID) effect, and improves resistance to moisture ingress, salt mist, and mechanical snow loads of up to 5,400 Pa. Module weight is somewhat higher than that of backsheet-based panels; however, the compact dimensions of the mini series mean that the module remains manageable for installation on standard roof-mounting structures by a typical two-person installation crew. ### Is the DAS Solar mini Bifacial Double Glass Module series still available for purchase? No, the DAS Solar mini Bifacial Double Glass Module series has been discontinued and is no longer offered as a new product. If you require similar specifications — compact form factor, N-type TOPCon cell technology, glass-glass construction, and rated power above 400 Wp — it is recommended to contact your distributor regarding currently available successor series from DAS Solar or equivalent offerings from other Tier 1 manufacturers. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Datasheet_-_DAS-DH108NA-xxx_410-430_Black-cfb607dbd2d8.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +50 W, lighter, +2.5 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +45 W, lighter, +2.3 pp | | [Luxor Solar LX-465M/182R188-108+ GG](https://comparepv.com/panel/luxor-solar-lx-465m-182r188-108-gg) | 465 W | +50 W, cooler, +2.3 pp | | [Just Solar JST-EDMH-(445-465)W-TD (460W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-460w-class) | 460 W | +45 W, lighter, +2.3 pp | | [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | +45 W, cooler, +2.2 pp | | [Philadelphia Solar PS-MNB108(HCBF)-460W](https://comparepv.com/panel/philadelphia-solar-ps-mnb108-hcbf-460w) | 460 W | +45 W, lighter, +2.2 pp | | [JA Solar JAT54S40-460/LR](https://comparepv.com/panel/ja-solar-jat54s40-460-lr) | 460 W | +45 W, lighter, +2.2 pp | | [DAS Solar DAS-DH108NA-410W](https://comparepv.com/panel/daon-das-dh108na-410w) | 410 W | -0.3 pp | | [DAS Solar DAS-DH108NA-420W](https://comparepv.com/panel/daon-das-dh108na-420w) | 420 W | Lighter | | [DAS Solar DAS-DH108NA-425W](https://comparepv.com/panel/daon-das-dh108na-425w) | 425 W | +10 W, lighter, +0.5 pp | | [DAS Solar DAS-DH108NA-430W](https://comparepv.com/panel/daon-das-dh108na-430w) | 430 W | +15 W, lighter, +0.7 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +80 W, cooler, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +90 W, cooler, +3.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +75 W, cooler, +3.2 pp | --- Source: https://comparepv.com/panel/daon-das-dh108na-415w 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.