--- title: "Heckert Solar NEMO 4.2 80 M 405 408W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar NEMO 4.2 80 M 405 408W solar panel. Specs: 20.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/heckert-solar-nemo-4-2-80-m-405-1" updated: 2026-09-11 --- # Heckert Solar NEMO 4.2 80 M 405 Strong in heat, no clear weak spot 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Heckert Solar - **Model:** NEMO 4.2 80 M 405 - **Series:** NEMO 4.2 80 M BLACK FRAME - **Rated power:** 408 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) | 408 W | 410 W | Typical | | | Module efficiency | 20.80% | 20.60% | Typical | 10,457 | | Power density | 209.5 | 206.2 | Typical | 9,951 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,778 | | Weight (kg) | 21.0 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.80% | 20.60% | Typical | 10,457 | | Power density | 209.5 | 206.2 | Typical | 9,951 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,778 | | Weight per kWp | 51.5 | 53.0 | Typical | 4,845 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **-0.340 %/°C temperature coefficient** - Top 24% of the PERC 400-450 W segment, against a median of -0.350. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 408 W - **Efficiency:** 20.80 % - **Voltage at Pmax (Vmp):** 47.44 V - **Current at Pmax (Imp):** 8.60 A - **Open-circuit voltage (Voc):** 55.05 V - **Short-circuit current (Isc):** 9.06 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.263 %/degC - **Temperature coefficient of Isc:** 0.037 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 80 ### Physical - **Length:** 1736 mm - **Width:** 1122 mm - **Thickness:** 35 mm - **Weight:** 21.0 kg - **Area:** 1.95 m2 - **Power density:** 209.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10457 of 14005 | | Power density | 9951 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 4845 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Manufactured exclusively in Germany with certified quality** - Modules are produced in fully automated facilities in Chemnitz and Langenwetzendorf (Saxony), minimizing the risk of cell micro-cracks. The series was developed in collaboration with Fraunhofer ISE — Europe's leading photovoltaic research institute — ensuring a level of process discipline not typically achievable in standard Asian manufacturing. - **G12 half-cut cells with 12 busbars — advanced cell architecture** - The use of G12 (210 mm) cells in a half-cut configuration with 12 busbars (versus the market standard of 9–10) reduces internal resistance and mechanical stress. The cross-string layout characteristic of this series limits micro-crack propagation, resulting in greater long-term durability under variable thermal loading. - **Exceptional mechanical resistance** - The module withstands snow loads up to 5,400 Pa and wind loads up to 2,400 Pa — values significantly exceeding IEC requirements for Polish climatic conditions (typical minimums: 2,400 Pa / 1,600 Pa). The 35 mm black anodized aluminum frame provides structural rigidity without a significant weight penalty. - **Favorable temperature coefficient (−0.34 %/°C)** - The power temperature coefficient of −0.34 %/°C outperforms the typical −0.35 to −0.40 %/°C range for PERC-class modules, reducing output losses on hot summer days. At an average module temperature of 55 °C in Poland, power loss is approximately 0.7 percentage points lower than modules with a less favorable coefficient. - **IEC 61701 and IEC 62716 certifications** - Certified resistance to salt mist (IEC 61701) and ammonia (IEC 62716) expands the range of eligible installation sites to coastal and agricultural applications (livestock facilities), where standard modules are susceptible to accelerated corrosion of electrical components. ## Cons - **PERC (P-type) technology versus competitors' TOPCon** - The series uses P-type PERC cells, while a key peer comparable — the Luxor Solar Eco Line N-type TOPCon — achieves an efficiency of 21.33% at the same 410 W power class, and the Sunket SKT410~430M10-108D4 reaches 21.0%. N-type TOPCon cells exhibit lower LID degradation rates and higher annual energy yields, which over a 25-year operational lifetime can translate to a realistically 3–5% higher cumulative energy output. - **Monofacial design (no bifaciality)** - The module is monofacial (is\_bifacial: false), whereas the direct peer comparable Luxor Solar Eco Line offers a glass-glass bifacial version in the same power class. On installations with high-albedo surfaces (gravel, light-colored metal roofing), a bifacial module can generate an additional 5–15% energy without any increase in occupied roof area. ## About this series Heckert Solar NEMO 4.2 80 M BLACK FRAME are advanced photovoltaic modules that introduce a new level of quality to the Polish market through the combination of German innovation and G12 cell technology. This series stands out for its use of larger silicon wafers, which translates to better utilization of the module surface area and higher energy conversion efficiency. Thanks to its solid construction with a black frame, these panels offer not only an aesthetic appearance but, above all, **extreme mechanical resistance** to snow pressure and strong wind gusts. It is an ideal choice for owners of single-family homes and enterprises that aim to maximize installation profits with limited roof space. What distinguishes this series from Asian competition is **production to European quality standards**, based on fully automated lines, which minimizes the risk of micro-cracks. By investing in these modules, the user gains **above-average yield stability** even on heavily cloudy days, which is crucial for a fast return on investment in our geographical conditions. By choosing this solution, you opt for an **ecological production process** and durability that guarantees trouble-free system operation for decades, solving the problem of frequent servicing and uncertainty regarding the actual power of the modules. It is a **safe investment in premium technology** that provides peace of mind and energy predictability. ## Notable figures - At 20.8% efficiency, this panel is on par with typical \*\*PERC 400-450W\*\* modules - Power density of 209.4 W/m² packs 3.2 W/m² more into the same footprint vs \*\*PERC 400-450W\*\* median (206.2 W/m²) - At -0.34%/°C, hot weather performance is typical for \*\*PERC 400-450W\*\* panels - At 21.0 kg, weight matches the \*\*PERC 400-450W\*\* median - In the top 75% for efficiency among all PERC panels ## Questions ### What is the maximum power output of the Heckert Solar NEMO 4.2 80 M BLACK FRAME and how does it affect energy yield? The Heckert Solar NEMO 4.2 80 M BLACK FRAME delivers up to approximately 408 Wp peak power at a module efficiency of up to 20.8%. The 80 G12 half-cut PERC cells arranged in a 12-busbar configuration reduce resistive losses and improve partial-shading tolerance compared to full-cell designs. A low temperature coefficient of -0.34%/°C keeps performance losses minimal on hot summer days, resulting in more kilowatt-hours per square meter of roof space. ### What warranty does the Heckert Solar NEMO 4.2 80 M BLACK FRAME series come with? Heckert Solar provides a 15-year product warranty covering material and workmanship defects, plus a separate 25-year power output warranty. All modules are manufactured exclusively in Germany (Chemnitz and Langenwetzendorf) on fully automated production lines that minimize the risk of microcracks, making the manufacturer's long-term warranty commitments credible and realistic to fulfill over the full warranty period. ### Can the Heckert NEMO 4.2 80 M BLACK FRAME handle heavy snow loads and strong winds? Yes. The NEMO 4.2 80 M BLACK FRAME series is rated for mechanical loads up to 5,400 Pa (snow) and 2,400 Pa (wind) per IEC 61215 test standards. The black anodized aluminum frame further reinforces structural rigidity. These ratings cover conditions typical of Polish mountain regions and areas with heavy snowfall, making this module a reliable choice for rooftops in demanding climates. ### Why did Heckert Solar choose G12 cells for the NEMO 4.2 series instead of smaller standard cells? Larger G12 cells (210 mm format) extract more power from the same module footprint because they use the framed area more efficiently. Combined with PERC technology and a half-cut layout, internal resistance drops and energy yield improves under diffuse irradiance. For homeowners with limited roof space, this translates to higher total wattage without adding extra rows of panels, improving the overall LCOE of the installation. ### Is the Heckert NEMO 4.2 80 M BLACK FRAME suitable for installation on a pitched residential roof? Yes, the NEMO 4.2 80 M BLACK FRAME is designed with residential prosumers in mind. The module dimensions (approximately 1,736×1,122 mm) and weight under 22 kg fit standard residential racking systems for pitched roofs. IEC 61215 and IEC 61730 certifications confirm safe installation on sloped surfaces. The all-black aesthetic integrates cleanly into modern roof designs without breaking the visual uniformity of the roof surface. ### Is the Heckert NEMO 4.2 80 M BLACK FRAME resistant to salt corrosion and ammonia? Yes. The modules carry IEC 61701 (salt mist corrosion) and IEC 62716 (ammonia resistance) certifications. This makes the series suitable for coastal installations near the Baltic Sea as well as agricultural sites with livestock buildings. These certifications confirm that the module will maintain structural and electrical integrity in environments that cause accelerated corrosion in non-certified panels. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/DB-NeMo-42-80-M_Black_Frame_395-405-2a709f2fbf0a.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-455-MAH54Db](https://comparepv.com/panel/aiko-aiko-455-mah54db) | 455 W | Cooler, +2.5 pp, +5 yr warranty | | [Longi Solar LR5-54HTH-455M](https://comparepv.com/panel/longi-lr5-54hth-455m) | 455 W | +47 W, cooler, +2.5 pp | | [Yingli YL455CF54 e/2](https://comparepv.com/panel/yingli-yl455cf54-e-2) | 455 W | Cooler, +2.5 pp, +5 yr warranty | | [Einnova Solarline ESM-455T](https://comparepv.com/panel/einnova-solarline-esm-455t) | 455 W | +47 W, +2.5 pp, +5 yr warranty | | [SunEvo Solar SE5-54HBC-455W](https://comparepv.com/panel/sunevo-solar-se5-54hbc-455w) | 455 W | +47 W, cooler, +2.5 pp | | [Just Solar JST-EDMH-(445-465)W-TD (455W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-455w-class) | 455 W | +47 W, +2.5 pp, +5 yr warranty | | [Luxor Solar LX-455M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-455m-182r-96-gg) | 455 W | Cooler, +2.5 pp, +5 yr warranty | | [Heckert Solar NEMO® 4.1 80 M 385](https://comparepv.com/panel/heckert-solar-nemo-4-1-80-m-385) | 385 W | -23 W, -1.0 pp | | [Heckert Solar NeMo® 4.2 80 M BLACK 390](https://comparepv.com/panel/heckert-solar-nemo-4-2-80-m-black-390) | 390 W | -18 W, -0.7 pp | | [Heckert Solar NeMo® 4.2 80 M 390](https://comparepv.com/panel/heckert-solar-nemo-4-2-80-m-390) | 392 W | -16 W, -0.7 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +102 W, cooler, +4.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +87 W, cooler, +4.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +97 W, cooler, +3.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +82 W, cooler, +3.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +92 W, cooler, +3.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +92 W, cooler, +3.7 pp | --- Source: https://comparepv.com/panel/heckert-solar-nemo-4-2-80-m-405-1 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.