--- title: "Heckert Solar NEMO® 3.0 120 M BLACK FRAME 380 380W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar NEMO® 3.0 120 M BLACK FRAME 380 380W solar panel. Specs: 20.00% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/heckert-solar-nemo-3-0-120-m-black-frame-380" updated: 2026-09-11 --- # Heckert Solar NEMO® 3.0 120 M BLACK FRAME 380 Strong in heat, no clear weak spot 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** Heckert Solar - **Model:** NEMO® 3.0 120 M BLACK FRAME 380 - **Series:** NEMO® 3.0 120 M BLACK FRAME - **Rated power:** 380 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 350-400 W (579 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 380 W | 380 W | Typical | | | Module efficiency | 20.00% | 19.90% | Typical | 12,214 | | Power density | 200.3 | 199.0 | Typical | 12,165 | | Temperature coefficient | -0.343 | -0.350 | Strong - top 25% | 10,348 | | Weight (kg) | 20.5 kg | 21.4 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.00% | 19.90% | Typical | 12,214 | | Power density | 200.3 | 199.0 | Typical | 12,165 | | Temperature coefficient | -0.343 | -0.350 | Strong - top 25% | 10,348 | | Weight per kWp | 53.9 | 55.8 | Typical | 8,139 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **-0.343 %/°C temperature coefficient** - Top 25% of the PERC 350-400 W segment, against a median of -0.350. - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 380 W - **Efficiency:** 20.00 % - **Voltage at Pmax (Vmp):** 34.97 V - **Current at Pmax (Imp):** 10.90 A - **Open-circuit voltage (Voc):** 41.47 V - **Short-circuit current (Isc):** 11.38 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 - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 120 ### Physical - **Length:** 1790 mm - **Width:** 1060 mm - **Thickness:** 35 mm - **Weight:** 20.5 kg - **Area:** 1.90 m2 - **Power density:** 200.3 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:** 289 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12214 of 14005 | | Power density | 12165 of 14005 | | Temperature coefficient | 10348 of 14005 | | Weight | 8139 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Manufactured exclusively in Germany** - Modules are produced at two German plants — Chemnitz and Langenwetzendorf (up to 400 MWp/year capacity). Every panel is certified by TÜV Rheinland (IEC 61215, IEC 61730, IEC 61701), VDE, DLG ammonia-resistance test, and salt-spray corrosion test — delivering consistent build quality and long-term serviceability not available from most Asian competitors. - **Zero negative power tolerance (0/+4.99 Wp)** - Heckert guarantees no negative power tolerance — every module delivers at least its rated 375 or 380 Wp. This is material for yield calculations in net-metering and PPA-based projects where any downward deviation translates directly into financial loss. - **Half-cut + 9-busbar cell architecture** - Splitting each cell into two halves reduces resistive (I²R) losses by approximately 50% per section, while the 9-busbar layout shortens current paths and improves microcrack resistance. The result is more stable energy production under partial shading and variable irradiance — conditions typical of Central European residential rooftops. - **Comprehensive certification suite** - The series holds TÜV Rheinland certifications (IEC 61215, IEC 61730, IEC 61701 — salt-fog resistance), DLG ammonia-resistance approval (relevant for agricultural installations), and MCS certification (UK market requirement). This is one of the most thoroughly certified product lines in the 375–380 Wp class among European manufacturers. - **30+ years of continuous own manufacturing** - Founded in 1992, Heckert Solar is one of the few European PV manufacturers with an uninterrupted own-production track record spanning over three decades. The company's operational stability and established service portfolio reduce counterparty risk for investors with 20–25 year investment horizons. ## Cons - **Module efficiency ~0.85 pp below peer comparables** - At the same peak power of 380 Wp, this series achieves 19.8–20% module efficiency versus VDS-S120/M6H at 20.8% and Gamko GKA166M120 at 20.85%. This translates to approximately 4–5% more roof area required for the same installed capacity — a meaningful constraint on space-limited residential rooftops. - **PERC (P-type) cells vs. TOPCon/HJT** - PERC cells exhibit higher Light-Induced Degradation (LID) and a less favorable temperature coefficient compared to N-type technologies (TOPCon, HJT) that are becoming the 2024–2026 market standard. Notably, Heckert itself has transitioned to TOPCon in the newer APOLLON 2.0 series, signaling the accelerating platform obsolescence of PERC-based NeMo 3.0 modules. - **15-year product warranty — below the premium segment benchmark** - Leading manufacturers (LONGi, Jinko, Trina) now routinely provide 25-year product warranties. Heckert's 15-year product warranty, paired with a 25-year power guarantee (≥80% after 25 years), creates a 10-year gap during which manufacturing defects are not covered — a risk factor for installations financed with loans matching the full power-warranty period. ## About this series The Heckert Solar NEMO® 3.0 120 M BLACK FRAME series is designed for high performance in real-world conditions, even when the roof is partially shaded or sunlight is variable. The use of **half-cut** construction minimizes losses in the module and helps to produce more energy at lower light levels. This solution will appeal to investors who want to "get the most" out of every square meter of roof space. The modules utilize **monocrystalline PERC technology**, and a **multi-busbar architecture** improves the performance and resistance to micro-cracks of the cells, which translates into predictable production over the long term. Another key feature is the **black frame** - an aesthetically pleasing and popular choice for modern roofs and premium installations. In practice, this series is ideal for single-family homes, small businesses, and projects where a balance between appearance, durability, and reliable performance is important. Furthermore, the modules are designed for modern integration thanks to **MC4 compatible connectors** that are compatible with optimizers. ## Notable figures - At 20.0% efficiency, this panel is 0.6pp above typical \*\*PERC 0-400W\*\* modules (median: 19.4%) - At 200.3 W/m² power density, this panel generates 5.9 W/m² more per unit area than \*\*PERC 0-400W\*\* median (194.4 W/m²) - Temperature coefficient of -0.34%/°C matches the \*\*PERC 0-400W\*\* median - In the top 87% for efficiency among all PERC panels ## Questions ### What is the power output and efficiency of the Heckert Solar NEMO® 3.0 120 M BLACK FRAME? The top variant in the series delivers 380 Wp peak power at a module efficiency of 20.0% (STC). Dimensions are 1790 × 1060 × 35 mm and the weight is just 20.5 kg. The power tolerance is strictly positive (0/+4.99 Wp), meaning the panel will never deliver less than its rated power — an important factor when calculating return on investment. ### What warranty does the Heckert Solar NEMO® 3.0 120 M BLACK FRAME come with? The manufacturer provides a 15-year product warranty covering manufacturing defects and a 25-year linear power output warranty. Under its terms, the module retains at least 90% of nominal power for the first 10 years and at least 80% after 25 years. Heckert Solar is a German manufacturer with TÜV Rheinland certification, which adds credibility to these commitments. ### Does the half-cut cell technology in the NEMO® 3.0 120 M series actually help with partial roof shading? Yes. In half-cut modules, each cell is split in two, dividing the panel into two independent electrical sections. If a chimney or dormer casts a shadow, only part of the module is affected rather than the whole string — a real difference in energy yield on rooftops with obstructions. Additionally, the 9-busbar architecture reduces resistive losses and improves resistance to microcracks. ### What are the dimensions and weight of the NEMO® 3.0 120 M BLACK FRAME — will it fit a standard residential roof? The module measures 1790 × 1060 × 35 mm and weighs 20.5 kg, placing it in the standard enlarged 60-cell panel class. It is compatible with typical racking systems designed for pitched roofs (metal tile, clay tile) and flat roofs. The sub-21 kg weight makes rooftop handling and single-installer mounting straightforward. ### Why does the NEMO® 3.0 120 M series feature a black frame, and does it affect module durability? The black frame (anodized aluminum) is primarily an aesthetic choice — the module blends into dark roofing materials, which is appreciated by owners of modern homes and installers working on premium projects. Technically, anodized aluminum is equally durable to a standard silver frame; corrosion resistance and mechanical load ratings remain the same. The series holds DLG ammonia-resistance certification and MCS certification. ### Are the Heckert Solar NEMO® 3.0 120 M BLACK FRAME modules compatible with power optimizers and inverters available on the market? Yes. The modules come with Stäubli MC4 connectors (4 mm² cable, IP 68, 2 × 1150 mm length), which are the industry standard compatible with SolarEdge, Tigo, Huawei, Fronius, and other leading manufacturers. A system voltage rating of up to 1000 V allows standard string configurations for both single-phase and three-phase inverters. Always verify compatibility with the specific inverter model against the Heckert Solar datasheet before installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/db-nemo-3-0-120-m-black-frame-375-380-492b3819b4c3.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +3.1 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +3.1 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +3.0 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +3.0 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +3.0 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | Lighter, +3.0 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | Lighter, +3.0 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +3.0 pp, +5 yr warranty | | [Maxeon SPR-MAX3-430-R](https://comparepv.com/panel/maxeon-spr-max3-430-r) | 430 W | Cooler, +2.7 pp, +15 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +2.6 pp, +15 yr warranty | | [Heckert Solar NeMo® 3.0 120 M 375](https://comparepv.com/panel/heckert-solar-nemo-3-0-120-m-375) | 375 W | Very close match | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +130 W, cooler, +5.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +115 W, cooler, +4.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +125 W, cooler, +4.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +110 W, cooler, +4.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +120 W, cooler, +4.5 pp | --- Source: https://comparepv.com/panel/heckert-solar-nemo-3-0-120-m-black-frame-380 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.