--- title: "Heckert Solar NEMO 3.0 120 M BLACK FRAME 375 375W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar NEMO 3.0 120 M BLACK FRAME 375 375W solar panel. Specs: 19.80% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/heckert-solar-nemo-3-0-120-m-black-frame-375-1" updated: 2026-09-11 --- # Heckert Solar NEMO 3.0 120 M BLACK FRAME 375 Middle of its segment, needs the roof space 5,812 panels in the 275-475 W band, all technologies ## Identity - **Manufacturer:** Heckert Solar - **Model:** NEMO 3.0 120 M BLACK FRAME 375 - **Series:** NEMO 3.0 120 M BLACK FRAME - **Rated power:** 375 W - **Cell technology:** Monocrystalline ## How it compares Compared against 275-475 W band, all technologies (5812 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 375 W | 425 W | Weak - bottom 17% | | | Module efficiency | 19.80% | 21.11% | Weak - bottom 19% | 12,416 | | Power density | 197.6 | 211.3 | Weak - bottom 19% | 12,437 | | Temperature coefficient | -0.343 | -0.310 | Typical | 10,348 | | Weight (kg) | 20.5 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 20% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.80% | 21.11% | Weak - bottom 19% | 12,416 | | Power density | 197.6 | 211.3 | Weak - bottom 19% | 12,437 | | Temperature coefficient | -0.343 | -0.310 | Typical | 10,348 | | Weight per kWp | 54.7 | 53.5 | Typical | 9,054 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 20% | 9,798 | ### Watch out for - **197.6 watts per square metre** - Bottom 19% of the 275-475 W band, against a median of 211.3. - **19.80% module efficiency** - Bottom 19% of the 275-475 W band, against a median of 21.11%. - **25 year performance warranty** - Bottom 20% of the 275-475 W band, against a median of 30 yrs. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Roofs where every square metre has to count, tight roof space and owners who want a long output guarantee. ## 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 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 | ## Pros - **Aesthetic black anodized frame** - The uniform black anodized aluminum frame and dark styling make the NeMo 3.0 120 M Black Frame series an attractive choice for pitched residential roofs, where the visual appearance of the installation matters to the investor. - **Half-cut cell technology with 9 busbars** - The half-cut cell design with 9 busbars reduces resistive losses and improves partial-shading tolerance compared to full-size cells, while also increasing the module's mechanical resistance. - **Proprietary microCELL TLS process** - The thermal laser separation microCELL TLS process limits cell microcracks arising during manufacturing, contributing to more stable performance across the module's 25-year power warranty period. - **German manufacturing since 1992** - Heckert Solar has manufactured in Germany since 1992, partly powering production lines with its own PV installations, which supports supply-chain auditability and quality assurance compared to offshore production. - **High snow and wind load resistance** - The module has passed rigorous snow and wind load testing, making it suitable for both roof-mounted and ground-mounted installations in regions with variable, harsh weather conditions. ## Cons - **Efficiency lags behind competitors** - Efficiency of 19.8-20% is notably lower than comparable 380 Wp modules - VDS-S120/M6H (20.8%), GKA166M120 (20.85%) and Panasonic EverVolt (21.7%). This means a larger roof area is required to reach the same installed capacity. - **Standard rather than extended warranty** - The 15-year product and 25-year power warranty are typical for a series launched in 2019, while some newer tier-1 modules now offer 25-30 year product warranties - a factor worth weighing when comparing offers on price. ## About this series The NeMo® 3.0 120 M Black Frame series is a monocrystalline PV module built for installations where both aesthetics and durability under demanding climate conditions matter. The panel stands out with its uniform, elegant look thanks to the **black anodized aluminum frame**, making it a particularly attractive choice for pitched roofs in residential construction, where the visual appearance of the system carries real weight. The cells used in the module rely on **half-cut cell technology with 9 busbars**, which reduces resistive losses, improves partial shading tolerance, and increases mechanical resilience. A key part of the manufacturing process is the proprietary **thermal laser separation microCELL™ TLS method**, which minimizes microcracks and ensures stable performance over the long term. The module has undergone rigorous testing for **high snow and wind load resistance**, making it a solid choice for both rooftop and ground-mounted installations in regions with variable weather conditions. Production takes place in Germany, partly powered by electricity from the manufacturer's own PV plants, underscoring its commitment to sustainability. It's a solution for investors seeking proven quality, a long product warranty, and a modern-looking installation. ## Notable figures - At 19.8% efficiency, this panel is 2.0pp below the \*\*database\*\* median of 21.8% - Power density of 197.6 W/m² is 20.5 W/m² below \*\*database\*\* median (218.1 W/m²) - needs more roof space - -0.34%/°C temperature coefficient - 0.04pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - At 20.5 kg, this panel is 6.0 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - Ranked #12416 out of 14005 panels for efficiency in the database ## Questions ### Is the Heckert Solar NeMo 3.0 120 M Black Frame panel suitable for a sloped residential roof? Yes, this is one of the main applications for this series. The black anodized aluminum frame and uniform, elegant design make the module a good fit for sloped roofs in residential buildings where installation aesthetics matter. It has also passed tests for snow loads up to 8,100 Pa and wind loads up to 2,400 Pa, confirming its suitability in more demanding weather conditions. ### What warranty does the NeMo 3.0 120 M Black Frame come with? Heckert Solar provides a 15-year product warranty along with a 25-year power output warranty. This is a solid standard for a premium-grade monocrystalline module and gives investors confidence for the full lifespan of the PV installation. ### What is microCELL TLS technology and does it really improve panel durability? MicroCELL TLS is Heckert Solar's proprietary thermal laser separation method used instead of conventional mechanical cell cutting. It preserves the cells' full mechanical strength and reduces the risk of microcracks, which can otherwise cause power loss over time. In practice, this results in more stable module performance throughout the warranty period. ### How do the half-cut cells with 9 busbars in the NeMo 3.0 differ from classic PV panels? Half-cut cells are cut in half, which reduces current losses and internal resistance compared to full-cell modules. Nine busbars improve current collection and increase tolerance to partial shading, such as from chimneys or dormers. The result is higher efficiency and greater resistance to mechanical damage than older panel designs. ### How much power can you get from a single NeMo 3.0 120 M Black Frame panel? The maximum power output in this series is 380 Wp. That's a strong result for a standard-size monocrystalline PERC module with half-cut cells, allowing high power density per roof area, which is especially useful when available roof space is limited. ### Are Heckert Solar NeMo 3.0 panels made in Germany, and does that affect quality? Yes, the modules are manufactured at Heckert Solar's plant in Langenwetzendorf, Germany, partly using power from the manufacturer's own solar installations. European production means tighter quality control, a shorter supply chain, and compliance with strict European standards, which matters given the 25-year power warranty. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/DB-NeMo-30-120-M-Black-Frame_375-380-2baae275b88e.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-black-frame-375-1 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.