--- title: "DAH Solar DAS-LOJP-415 415W Solar Panel - Specs & Review | ComparePV" description: "DAH Solar DAS-LOJP-415 415W solar panel. Specs: 20.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dah-solar-das-lojp-415" updated: 2026-09-11 --- # DAH Solar DAS-LOJP-415 Light for its output, needs the roof space 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** DAH Solar - **Model:** DAS-LOJP-415 - **Series:** DAS-LOJP - **Rated power:** 415 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 415 W | 410 W | Typical | | | Module efficiency | 20.00% | 20.60% | Weak - bottom 13% | 12,214 | | Power density | 179.5 | 206.2 | Weak - bottom 1% | 13,225 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,778 | | Weight (kg) | 9.9 kg | 22.0 kg | Strong - top 2% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.00% | 20.60% | Weak - bottom 13% | 12,214 | | Power density | 179.5 | 206.2 | Weak - bottom 1% | 13,225 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,778 | | Weight per kWp | 23.9 | 53.0 | Strong - top 2% | 91 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **23.9 kg per kWp** - Top 2% of the PERC 400-450 W segment, against a median of 53.0. Ranked 91st in the whole database. - **-0.340 %/°C temperature coefficient** - Top 24% of the PERC 400-450 W segment, against a median of -0.350. ### Watch out for - **179.5 watts per square metre** - Bottom 1% of the PERC 400-450 W segment, against a median of 206.2. Ranked 13,225th in the whole database. - **20.00% module efficiency** - Bottom 13% of the PERC 400-450 W segment, against a median of 20.60%. - **Best for:** Residential and commercial. - **Not ideal for:** Roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 415 W - **Efficiency:** 20.00 % - **Voltage at Pmax (Vmp):** 41.71 V - **Current at Pmax (Imp):** 9.95 A - **Open-circuit voltage (Voc):** 50.40 V - **Short-circuit current (Isc):** 10.51 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:** 1985 mm - **Width:** 1165 mm - **Thickness:** 4 mm - **Weight:** 9.9 kg - **Area:** 2.31 m2 - **Power density:** 179.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 10 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 85.5 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 344 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12214 of 14005 | | Power density | 13225 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 91 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Ultra-lightweight design (9.9 kg, –60% weight reduction)** - The DAS-LOJP weighs just 9.9 kg at dimensions of 1985×1165×4 mm, approximately 60% lighter than conventional modules of equivalent power output (standard 410–420 Wp modules weigh 20–22 kg). This enables installation on rooftops with limited structural load capacity—corrugated metal industrial buildings, mansard roofs, and membrane roofing systems—without costly structural reinforcement. - **Frameless front surface: self-cleaning and no soiling-induced LID** - The absence of a protruding front frame eliminates edge shading caused by dust accumulation, a particularly significant issue on roofs with tilt angles below 10°. Rainfall freely washes contaminants across the entire glass surface, which—according to TÜV Nord field testing—translates into higher annual energy yields compared to framed modules at the same site. - **N-type TOPCon cells: low degradation and LID-free operation** - N-type TOPCon technology eliminates the Light-Induced Degradation (LID) inherent to PERC cells and delivers superior performance under diffuse irradiance (overcast conditions, low solar angles). The series specifies degradation of ≤0.5%/year after year one, resulting in meaningfully higher cumulative energy yield over a 25-year operational lifetime. - **Bankability: BNEF Tier 1 Q1–Q4 2025** - The manufacturer maintained BNEF Tier 1 status continuously across all four quarters of 2025. This status is required by banks and project finance institutions as a prerequisite for PV project financing eligibility—lowering installation WACC and facilitating access to investment loans. - **25-year linear power warranty** - The modules are covered by a 25-year linear power output warranty and a 10-year product warranty, in line with the market standard for Tier 1 N-type modules, ensuring predictable energy yield throughout the system's intended operational lifetime. ## Cons - **Efficiency 1.2–1.7 percentage points below competing products** - In the 410–420 Wp segment, comparable series achieve significantly higher efficiencies: GCL-M10/54H at 21.5%, Solarspace SS8-54HSB Lumina I at 21.51%, and Phono Solar TWINPLUS at 20.98%—versus 19.8–20.3% for the DAS-LOJP. A gap of 1.2–1.7 percentage points means approximately 6–8% more modules are required, or a loss of roughly 15–25 Wp on an equivalent roof area, which is a meaningful constraint on space-limited installations. - **Installation requires dedicated mounting hardware** - The frameless design is incompatible with standard mid-clamps and end-clamps used with aluminum-framed modules. Dedicated edge-mounting brackets (screw-type or clamp-type for 4 mm glass) are required, which—according to installers—increases the mounting system cost by 5–15% compared to a conventional framed-module installation and necessitates hardware verification prior to system design. ## About this series The DAH DAS-LOJP series revolutionizes the approach to efficiency thanks to the patented **Full-Screen** technology, which completely eliminates the problem of water accumulation and dust deposits on the module edges. The absence of a traditional frame protruding above the glass surface allows precipitation to naturally wash away any impurities, which directly translates into higher energy yields compared to standard designs. The use of advanced cells in **N-type TOPCon** technology guarantees excellent efficiency under limited sunlight and exceptionally low power degradation over a long-term horizon. This solution is primarily dedicated to rooftop installations with a low tilt angle, where traditional panels often suffer from the edge shading effect caused by dirt. The DAS-LOJP series stands out on the market with its unique **frameless edge design**, which significantly reduces maintenance costs and the frequency of module cleaning. Investors choosing these products gain **maximization of annual yields** and a guarantee of stable system operation even in difficult environmental conditions. This is a substantive response to real operational problems, placing these panels at the forefront of innovations available for modern households and enterprises seeking **increased energy self-consumption**. ## Notable figures - Module efficiency of 20.0% is 0.6pp below average for \*\*PERC 400-450W\*\* panels (median: 20.6%) - Power density of 179.5 W/m² is 26.7 W/m² below \*\*PERC 400-450W\*\* median (206.2 W/m²) - needs more roof space - At -0.34%/°C, hot weather performance is typical for \*\*PERC 400-450W\*\* panels - 9.9 kg weight - 12.1 kg lighter than \*\*PERC 400-450W\*\* median (22.0 kg), reducing installation effort - Ranked #12214 out of 14005 panels for efficiency in the database ## Questions ### What distinguishes Full-Screen technology in DAH Solar DAS-LOJP panels, and why does it matter for my roof? Full-Screen technology features a frameless module edge — the glass is not surrounded by a protruding aluminum frame, allowing rainwater to flow freely across the entire surface and wash away dust and deposits. On low-tilt roofs, conventional framed panels accumulate dirt along the frame edge, which can reduce annual energy output by several percentage points. The DAS-LOJP series eliminates this problem, delivering measurably higher annual yields without additional cleaning costs. ### What warranty is provided for DAH Solar DAS-LOJP panels, and what does it cover? The manufacturer provides a 10-year product warranty covering material and workmanship defects. In addition, a 25-year linear power output warranty applies, guaranteeing that the panel retains a defined percentage of its nominal power as specified by DAH Solar for a full quarter century. With the N-type TOPCon technology used in the DAS-LOJP series, annual degradation is exceptionally low, meaning real-world yields throughout the warranty period are higher than those of legacy P-type technologies. ### Are DAH Solar DAS-LOJP panels well-suited for flat or low-pitch roofs? Yes — the DAS-LOJP series is specifically designed for exactly these installations. On flat and low-tilt roofs (below 10°), conventional framed panels trap water and mud along the edges, creating persistent peripheral shading. The frameless Full-Screen design ensures that even light rainfall effectively cleans the module, directly translating into higher energy yields throughout the year. ### What is the maximum power output of a DAH Solar DAS-LOJP panel, and is that sufficient for a typical home? The maximum rated power in the DAS-LOJP series is 420 Wp. For a typical single-family home consuming approximately 4,000–5,000 kWh per year, 10–14 modules are generally sufficient, yielding a system size of 4.2–5.9 kWp. The exact number of panels depends on available roof area, orientation, and local solar irradiance — it is advisable to request an individual system design with a yield simulation from your installer. ### What is an N-type TOPCon cell, and why does the DAS-LOJP series use this technology? TOPCon (Tunnel Oxide Passivated Contact) is an advanced N-type silicon cell technology that minimizes carrier recombination at the cell surface. In practice, this means higher efficiency under low-irradiance conditions — the panel operates more effectively on overcast days and at dawn or dusk. N-type technology also exhibits significantly lower annual degradation than standard P-type PERC cells, resulting in greater energy production over the full 25-year power output warranty period. ### Do DAH Solar DAS-LOJP panels require frequent cleaning, and what does maintenance look like in practice? Thanks to the frameless Full-Screen design, the DAS-LOJP series is largely self-cleaning during rainfall — the absence of a protruding frame eliminates the accumulation of dirt and moss at the module edges. Under typical Central European climate conditions, most installers recommend cleaning panels once a year or not at all when the roof pitch is adequate. The direct result is reduced maintenance costs compared to conventional aluminum-framed modules. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Datasheet-DAS-LOJP-xxx410-420-b0b2f7188482.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, heavier, +3.8 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | Cooler, heavier, +3.8 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | Cooler, heavier, +3.6 pp | | [Luxor Solar LX-465M/182R188-108+ GG](https://comparepv.com/panel/luxor-solar-lx-465m-182r188-108-gg) | 465 W | Cooler, heavier, +3.6 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 | Heavier, +3.6 pp, +5 yr warranty | | [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | Cooler, heavier, +3.6 pp | | [Philadelphia Solar PS-MNB108(HCBF)-460W](https://comparepv.com/panel/philadelphia-solar-ps-mnb108-hcbf-460w) | 460 W | Cooler, heavier, +3.5 pp | | [JA Solar JAT54S40-460/LR](https://comparepv.com/panel/ja-solar-jat54s40-460-lr) | 460 W | Cooler, heavier, +3.5 pp | | [DAH Solar DAS-LOJP-410](https://comparepv.com/panel/dah-solar-das-lojp-410) | 410 W | Very close match | | [DAH Solar DAS-LOJP-420](https://comparepv.com/panel/dah-solar-das-lojp-420) | 420 W | +0.3 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +145 W, 15 kg heavier, +4.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +140 W, 15 kg heavier, +4.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +135 W, cooler, +4.4 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +125 W, heavier, +4.4 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +125 W, heavier, +4.4 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +130 W, 18 kg heavier, +4.3 pp | --- Source: https://comparepv.com/panel/dah-solar-das-lojp-415 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.