--- title: "Heckert Solar NEMO® 3.0 120 M 375Wp 375W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar NEMO® 3.0 120 M 375Wp 375W solar panel. Specs: 19.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/heckert-solar-nemo-3-0-120-m-375wp" updated: 2026-09-11 --- # Heckert Solar NEMO® 3.0 120 M 375Wp 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 375Wp - **Series:** NEMO® 3.0 120 M - **Rated power:** 375 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) | 375 W | 380 W | Typical | | | Module efficiency | 19.80% | 19.90% | Typical | 12,416 | | Power density | 197.6 | 199.0 | Typical | 12,437 | | 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 | 19.80% | 19.90% | Typical | 12,416 | | Power density | 197.6 | 199.0 | Typical | 12,437 | | Temperature coefficient | -0.343 | -0.350 | Strong - top 25% | 10,348 | | Weight per kWp | 54.7 | 55.8 | Typical | 9,054 | | 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):** 375 W - **Efficiency:** 19.80 % - **Voltage at Pmax (Vmp):** 35.60 V - **Current at Pmax (Imp):** 10.58 A - **Open-circuit voltage (Voc):** 41.24 V - **Short-circuit current (Isc):** 11.11 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:** 197.6 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:** 285 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12416 of 14005 | | Power density | 12437 of 14005 | | Temperature coefficient | 10348 of 14005 | | Weight | 9054 of 14005 | | Warranty | 9798 of 14005 | ## About this series The Heckert Solar NEMO 3.0 120 M series consists of advanced monocrystalline modules that define the standards of European manufacturing quality and reliability. The use of **Half-Cut cell technology** in combination with a 9-busbar system allows for a significant reduction in resistive losses and optimization of module operation even in partial shading conditions. These panels effectively solve the problem of limited roof space by offering high power density and long-term stability of electrical parameters. What particularly distinguishes this series from the competition is its **above-average mechanical resistance** to snow and wind loads, achieved through an innovative frame design. These products are primarily dedicated to demanding individual and business investors who prioritize **energy security based on EU components** and certified resistance to PID degradation. By choosing this solution, the user gains a guarantee of stable operation in a variable climate, which directly translates into a faster return on the entire investment. The NEMO 3.0 120 M series combines an aesthetic appearance with **maximum performance in low-light conditions**, making it one of the most solid choices in the premium segment on the Polish market. ## Notable figures - At 19.8% efficiency, this panel is on par with typical \*\*PERC 0-400W\*\* modules - Power density of 197.6 W/m² packs 3.2 W/m² more into the same footprint vs \*\*PERC 0-400W\*\* median (194.4 W/m²) - Temperature coefficient of -0.34%/°C matches the \*\*PERC 0-400W\*\* median - #12416 for efficiency, #10348 for temperature performance out of 14005 panels ## Questions ### Is the Heckert Solar NEMO 3.0 120 M series still available for purchase? The NEMO 3.0 120 M series has been discontinued and is no longer in active production. Limited stock may still be available through select distributors, but restocking is not guaranteed. If you need a comparable product from the same manufacturer, consider Heckert Solar's newer lines such as the Apollon or Zeus series, which offer higher wattage per module. ### What warranty does the Heckert Solar NEMO 3.0 120 M carry and what does it cover? The NEMO 3.0 120 M comes with a 15-year product warranty covering manufacturing defects and workmanship, plus a 25-year linear power output warranty. The power warranty ensures the module retains a specified percentage of its rated output over a 25-year period, protecting the investment yield and making long-term ROI calculations more predictable. ### How does the Heckert Solar NEMO 3.0 120 M perform under partial shading conditions? The NEMO 3.0 120 M uses half-cut PERC cells combined with a 9-busbar layout, both of which reduce power losses caused by partial shading from chimneys, dormers, or neighboring structures. Shading one half of a half-cut module has less impact on overall output than with full-cell designs. For maximum shade mitigation, pairing the module with power optimizers or a module-level MPPT inverter is recommended. ### What mechanical loads can the NEMO 3.0 120 M handle — is it suitable for high-snowfall or mountain locations? The NEMO 3.0 120 M is rated for snow loads up to 5400 Pa and wind loads up to 2400 Pa, placing it among the more robust residential modules available. This makes it well-suited for rooftops in alpine or sub-alpine areas with heavy winter snowfall. Final suitability should always be confirmed by a certified installer who can assess local climate zone requirements and roof pitch. ### What does PERC half-cut cell technology in the NEMO 3.0 120 M actually mean for energy output? PERC adds a passivated rear reflective layer to the monocrystalline silicon cell, increasing photon-to-electron conversion. Half-cut splits each cell in two, lowering internal resistance and heat-related losses. Together, these technologies push the 385 Wp variant to approximately 20.3% module efficiency, improve low-light performance on overcast days, and increase resilience to localized shading compared to older full-cell PERC designs. ### Are Heckert Solar NEMO 3.0 120 M panels genuinely manufactured in Europe? Yes. Heckert Solar is headquartered in Germany, and the NEMO 3.0 series modules are produced at the company's factory in Langenwetzendorf, Thuringia. European manufacturing ensures compliance with strict IEC quality standards, eliminates import tariff risk, and supports EU-origin procurement requirements. The panels are also manufactured using green electricity sourced in part from Heckert Solar's own PV installations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/DB-NeMo-30-120-M-375-385-Wp-68f232fe31cc.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, +3.3 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +3.3 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +3.2 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +3.2 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, +3.2 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 | +25 W, +3.2 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 | +25 W, +3.2 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, +3.2 pp, +5 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +2.8 pp, +15 yr warranty | | [Maxeon SPR-MAX3-425-R](https://comparepv.com/panel/maxeon-spr-max3-425-r) | 425 W | Cooler, +2.6 pp, +15 yr warranty | | [Heckert Solar NeMo® 3.0 120 M 380](https://comparepv.com/panel/heckert-solar-nemo-3-0-120-m-380) | 380 W | Very close match | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +135 W, cooler, +5.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +120 W, cooler, +5.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +130 W, cooler, +4.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +115 W, cooler, +4.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +125 W, cooler, +4.7 pp | --- Source: https://comparepv.com/panel/heckert-solar-nemo-3-0-120-m-375wp Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.