--- title: "Heckert Solar NEMO® 4.1 80 M 400 400W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar NEMO® 4.1 80 M 400 400W solar panel. Specs: 20.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/heckert-solar-nemo-4-1-80-m-400" updated: 2026-09-11 --- # Heckert Solar NEMO® 4.1 80 M 400 Solid all-round for its segment 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Heckert Solar - **Model:** NEMO® 4.1 80 M 400 - **Series:** NEMO® 4.1 80 M - **Rated power:** 400 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) | 400 W | 410 W | Weak - bottom 9% | | | Module efficiency | 20.50% | 20.60% | Typical | 11,308 | | Power density | 205.4 | 206.2 | Typical | 11,215 | | Temperature coefficient | -0.343 | -0.350 | Typical | 10,348 | | 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 | 20.50% | 20.60% | Typical | 11,308 | | Power density | 205.4 | 206.2 | Typical | 11,215 | | Temperature coefficient | -0.343 | -0.350 | Typical | 10,348 | | Weight per kWp | 52.5 | 53.0 | Typical | 6,043 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.50 % - **Voltage at Pmax (Vmp):** 23.60 V - **Current at Pmax (Imp):** 16.97 A - **Open-circuit voltage (Voc):** 28.30 V - **Short-circuit current (Isc):** 18.15 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.343 %/degC - **Temperature coefficient of Voc:** -0.263 %/degC - **Temperature coefficient of Isc:** 0.033 %/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:** 205.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 80.0 % - **Output after 30 years:** 304 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11308 of 14005 | | Power density | 11215 of 14005 | | Temperature coefficient | 10348 of 14005 | | Weight | 6043 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Made in Germany Manufacturing** - Modules are manufactured at the Chemnitz facility — since April 2024 (following the closure of Meyer Burger's Freiberg plant), Heckert Solar is de facto the only active PV panel manufacturer with continuous production on German soil. This translates to a shorter supply chain, full component traceability, and zero exposure to import tariffs or trade sanctions. - **19.8–20.5% Efficiency Above Segment Median** - The 19.8–20.5% efficiency range clearly outpaces the comparable DMEGC GH400M10T-B48HST module (15.48%) and matches or exceeds the Solaria PowerXT (20.2%). Only the Meyer Burger White (21.7%) delivers a meaningfully higher result, though it occupies a higher price tier. - **80 Half-Cut Cells — Enhanced Shading Tolerance** - The 80 half-cut cell layout reduces internal resistance and limits mismatch losses under partial shading to approximately 50% of those typical for full-size cells. This yields higher energy output under conditions common on Polish rooftops featuring chimneys, ventilation stacks, or flue outlets. - **Low Temperature Coefficient of −0.343%/°C** - The Pmax temperature coefficient of −0.343%/°C sits at the lower bound of the typical PERC range (−0.34% to −0.37%/°C). At a module temperature of 70°C, this represents approximately 1.7% higher power output compared to a panel rated at −0.36%/°C — a meaningful advantage during hot Polish summers. - **15-Year Product Warranty and 30+ Years of Market Presence** - The standard 15-year product warranty exceeds the offering of many budget-segment Asian manufacturers (10–12 years). Heckert Solar has operated continuously since 1992 and, as the only active PV manufacturer in Germany, has held the Top Brand PV certification since 2015 — significantly reducing the risk of warranty abandonment. ## Cons - **PERC Technology — Older Cell Generation** - PERC is a mature but increasingly displaced technology, being superseded by TOPCon and HJT n-type cells, which exhibit lower LID degradation rates and higher annual energy yield. Heckert Solar itself launched the TOPCon-based Apollon 1.0 series in 2024, suggesting a gradual phase-out of PERC within their roadmap — buyers planning installations with a 25+ year horizon should factor this in. - **Not Listed on Bloomberg BNEF Tier-1** - Heckert Solar does not appear on the Bloomberg NEF Tier-1 module manufacturer list, which may complicate access to bank financing or leasing arrangements for commercial projects and utility-scale PV farms, where financial institutions routinely require Tier-1 status as a module eligibility criterion. ## About this series The Heckert Solar NEMO® 4.1 80 M series is designed to maximize energy yield from typical roof areas, without complicating the installation process. These are monocrystalline modules with an **80-cell** configuration, which are better suited to local shading and minimize losses due to microcracks compared to traditional solutions. The use of an **anti-reflective coating** ensures stable performance under varying sunlight conditions, which is particularly important in the Polish climate, where sunlight can be diffuse. Another notable feature is the **low power loss at high temperatures**, which allows the module to maintain its efficiency on hot days, when many installations lose the most power. This series is a good choice for single-family homes, small businesses, and projects where predictable production and an aesthetically uniform surface are important. An additional advantage is the **extended product warranty**, which enhances investment security and differentiates this series from many budget-friendly panels. ## Notable figures - At 20.5% efficiency, this panel is on par with typical \*\*PERC 400-450W\*\* modules - At 205.4 W/m² power density, roof space requirements are typical for \*\*PERC 400-450W\*\* panels - Temperature coefficient of -0.34%/°C matches the \*\*PERC 400-450W\*\* median - Weight of 21.0 kg is typical for \*\*PERC 400-450W\*\* panels - Ranked #11308 out of 14005 panels for efficiency in the database ## Questions ### What warranty does the Heckert Solar NEMO® 4.1 80 M series come with? The NEMO® 4.1 80 M series includes a 15-year product warranty covering manufacturing and material defects, plus a 25-year power output warranty guaranteeing the module retains a specified percentage of its rated power. This is one of the stronger warranty packages available in the monocrystalline PERC segment and provides solid investment protection compared to many budget alternatives. ### What does the 80 half-cut cell design in the NEMO® 4.1 80 M mean for performance? The 80 half-cut PERC cell layout splits each standard cell in half, reducing per-cell current and resistive losses. This translates into better tolerance for partial shading from chimneys or dormers and lower susceptibility to power loss caused by micro-cracks. For a residential rooftop installation, the result is more consistent energy output across varying weather conditions throughout the year. ### Are Heckert Solar NEMO® 4.1 80 M panels suitable for a pitched residential roof? Yes. At 1736 x 1122 mm and approximately 21 kg, the NEMO® 4.1 80 M fits standard residential racking systems designed for pitched roofs. The anti-reflective coated glass improves yield under diffuse irradiance conditions common in Central European climates, and the module is certified for wind and snow load ratings appropriate for the region. ### How does the NEMO® 4.1 80 M perform in high summer temperatures? The NEMO® 4.1 80 M features a low temperature power coefficient, meaning it loses less output on hot days than average modules. The half-cut PERC design reduces resistive heating within the cells, and the panel is rated for operating temperatures up to +85°C. In practice, the array maintains better performance in July and August compared to lower-grade modules with higher thermal derating. ### What is the peak power of the Heckert Solar NEMO® 4.1 80 M and which systems is it designed for? Peak power reaches 400 Wp, with the series spanning 385–400 Wp variants. The module is aimed at prosumer installations: single-family homes, small businesses, and agricultural sites where predictable generation and limited roof area are key constraints. Module efficiency of approximately 20% is a strong result for non-bifacial monocrystalline PERC technology in this power class. ### Is Heckert Solar a reliable manufacturer and where are its panels produced? Heckert Solar is a German PV manufacturer based in Chemnitz with over 30 years of industry history. NEMO® series modules are TÜV Rheinland certified to IEC 61215 and IEC 61730, and hold MCS certification. European production, a long track record, and third-party certification distinguish Heckert Solar from budget suppliers lacking comparable documentation or quality history. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/db-nemo-4-1-80-m-385-400-963418127c3c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | Cooler, +2.6 pp, +5 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-450w-class) | 450 W | +50 W, +2.6 pp, +5 yr warranty | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, cooler, +2.5 pp | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, +2.5 pp, +5 yr warranty | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, +2.5 pp, +5 yr warranty | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +2.5 pp | | [Heckert Solar NEMO® 4.1 80 M 385](https://comparepv.com/panel/heckert-solar-nemo-4-1-80-m-385) | 385 W | -15 W, -0.7 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 | -10 W, -0.4 pp | | [Heckert Solar NeMo® 4.2 80 M 390](https://comparepv.com/panel/heckert-solar-nemo-4-2-80-m-390) | 392 W | -0.4 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +110 W, cooler, +4.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +95 W, cooler, +4.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +105 W, cooler, +4.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +90 W, cooler, +4.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +100 W, cooler, +4.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +100 W, cooler, +4.0 pp | --- Source: https://comparepv.com/panel/heckert-solar-nemo-4-1-80-m-400 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.