--- title: "Heckert Solar NEMO 2.0 60 M 325 325W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar NEMO 2.0 60 M 325 325W solar panel. Specs: 19.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/heckert-solar-nemo-2-0-60-m-325-1" updated: 2026-09-11 --- # Heckert Solar NEMO 2.0 60 M 325 Light for its output, weak in heat 286 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Heckert Solar - **Model:** NEMO 2.0 60 M 325 - **Series:** NEMO 2.0 60 M - **Rated power:** 325 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 300-350 W (286 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 325 W | 325 W | Typical | | | Module efficiency | 19.40% | 19.00% | Typical | 12,735 | | Power density | 193.5 | 190.0 | Typical | 12,757 | | Temperature coefficient | -0.380 | -0.360 | Weak - bottom 22% | 13,397 | | Weight (kg) | 18.3 kg | 19.0 kg | Strong - top 16% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.40% | 19.00% | Typical | 12,735 | | Power density | 193.5 | 190.0 | Typical | 12,757 | | Temperature coefficient | -0.380 | -0.360 | Weak - bottom 22% | 13,397 | | Weight per kWp | 56.3 | 60.0 | Strong - top 16% | 10,559 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **56.3 kg per kWp** - Top 16% of the PERC 300-350 W segment, against a median of 60.0. ### Watch out for - **-0.380 %/°C temperature coefficient** - Bottom 22% of the PERC 300-350 W segment, against a median of -0.360. - **Best for:** Residential and commercial. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 325 W - **Efficiency:** 19.40 % - **Voltage at Pmax (Vmp):** 33.29 V - **Current at Pmax (Imp):** 9.85 A - **Open-circuit voltage (Voc):** 40.98 V - **Short-circuit current (Isc):** 10.17 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.380 %/degC - **Temperature coefficient of Voc:** -0.350 %/degC - **Temperature coefficient of Isc:** 0.070 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 60 ### Physical - **Length:** 1670 mm - **Width:** 1006 mm - **Thickness:** 38 mm - **Weight:** 18.3 kg - **Area:** 1.68 m2 - **Power density:** 193.5 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:** 247 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12735 of 14005 | | Power density | 12757 of 14005 | | Temperature coefficient | 13397 of 14005 | | Weight | 10559 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Manufactured Exclusively in Germany** - Modules are produced at the Chemnitz facility with certified Industry 4.0 automation — Heckert Solar is one of the last active European PV module manufacturers still producing domestically. The Top-Brand-PV certification held continuously since 2015 confirms parameter repeatability and rigorous quality control. - **High Efficiency Within Peer Class** - The 19.4–19.9% efficiency range places this series clearly above comparable models: the Huasun HSN-210R-B72 achieves 15.1% and the SP Poly 72-cell reaches 17.26%. For a given roof area, the ~2.6 percentage-point advantage over SP Poly translates to a real-world yield gain of several percent from the same surface area. - **Enhanced Mechanical Load Resistance** - Snow load rating up to 5,400 Pa and wind load up to 1,600 Pa (Heckert Solar datasheet, 2025) exceed the IEC 61215 minimum requirements of 2,400 Pa. This eliminates the risk of mechanical damage in the Polish climate, which is characterized by heavy snowfall and strong winds. - **Favorable Pmax Temperature Coefficient** - The -0.38%/°C value (ENF Solar datasheet, 325–335 Wp) outperforms standard polycrystalline modules (-0.40 to -0.45%/°C), reducing thermal losses during summer. At 335 Wp and approximately 300 hours of annual high-temperature exposure, the 0.06 percentage-point difference yields several additional kWh of output compared to lower-cost polycrystalline alternatives. - **Product Line Stability and Manufacturer Continuity** - Heckert Solar has operated continuously since 1992 (over 30 years), and the NEMO 2.0 series has remained active since 2016 with no discontinuation announced. This significantly reduces the risk of losing warranty support — a genuine concern with modules from smaller Asian suppliers. ## Cons - **2016-Generation PERC Technology** - The series is based on a 60-cell PERC module released in 2016. The market has shifted toward N-type TOPCon and HJT achieving efficiencies >22% and Pmax temperature coefficients of approximately -0.30%/°C. The 0.08%/°C difference in temperature coefficient at 335 Wp translates to roughly 0.27 W/°C greater thermal losses than modern alternatives — a noticeable drawback given typical Polish summer module temperatures of 60–70°C. - **Power Warranty of 80% After 25 Years** - An 80% power retention guarantee at 25 years is the IEC minimum standard, not a premium differentiator. Current premium-class TOPCon and HJT modules — including the newer Heckert NeMo 4.2 — guarantee 87.4–90% over 25–30 years. A 7+ percentage-point gap over a 25-year horizon represents several hundred kWh of foregone cumulative yield on a 10 kWp system. - **Lower Efficiency Than Peer Group Leader** - The SunLink LUXMAX achieves 20.16% at the same 335 Wp power class, compared to a maximum of 19.9% for this series — a gap of 0.27–0.76 percentage points that translates to approximately 1.4–3.8% less energy generated from the same roof area. ## About this series Heckert Solar NEMO 2.0 60 M photovoltaic panels are synonymous with German precision, focusing on maximum efficiency in real-world weather conditions. This series stands out for its unique approach to module construction, where **above-average mechanical stability** plays a key role, achieved through innovative frame design and the use of high-transparency tempered glass. The use of **monocrystalline PERC cell** technology allows for efficient energy generation even in lower sunlight, which directly translates into a faster return on investment for prosumers. Unlike mass-produced modules, the NEMO 2.0 series is created in an **automated Industry 4.0 production** process exclusively in Germany, which eliminates human error and guarantees the consistency of technical parameters. This is a solution dedicated primarily to demanding homeowners and companies that focus on **maximum investment security** and the durability of components resistant to extreme snow or wind loads. By choosing these panels, the user receives a product with a low carbon footprint and high aesthetics that, thanks to its optimized weight, does not place excessive strain on the roof structure. This is a premium choice that effectively eliminates problems related to the rapid cell degradation found in cheaper alternatives. ## Notable figures - Efficiency of 19.4% matches the \*\*PERC 0-400W\*\* median - At 193.4 W/m² power density, roof space requirements are typical for \*\*PERC 0-400W\*\* panels - -0.38%/°C temperature coefficient - 0.02pp worse than \*\*PERC 0-400W\*\* median (-0.36%/°C), expect higher hot weather losses - At 18.3 kg, this panel is 2.2 kg lighter than \*\*PERC 0-400W\*\* median (20.5 kg) - easier handling during installation - In the top 91% for efficiency among all PERC panels ## Questions ### What warranty does the Heckert Solar NEMO 2.0 60 M come with? The NEMO 2.0 60 M series comes with a 15-year product warranty covering material and manufacturing defects, plus a 25-year linear power output warranty. This means Heckert Solar guarantees a defined minimum performance level for a full quarter century. It is one of the most comprehensive warranty packages in the premium segment, reflecting the manufacturer's confidence in module durability. ### Can the NEMO 2.0 60 M panels handle heavy snow loads typical of Central European winters? Yes. The NEMO 2.0 60 M frame is engineered to withstand snow loads of up to 5,400 Pa, equivalent to over half a meter of wet snow. This value comfortably exceeds the requirements for most locations across Central Europe, including mountainous regions. The high-transparency tempered glass also protects cells from mechanical fractures caused by thermal stress. ### What is PERC technology and what benefit does it provide in the Heckert Solar NEMO 2.0 60 M? PERC (Passivated Emitter and Rear Cell) adds a passivation layer on the rear of each monocrystalline cell, reflecting unabsorbed photons back into the silicon for a second absorption pass. The result is higher current output at the same irradiance level, including under diffuse or low-light conditions common in northern European climates. For the 335 Wp module, this translates into measurable annual energy gains and a shorter investment payback period. ### How much does the Heckert Solar NEMO 2.0 60 M weigh, and is it suitable for older roof structures? The NEMO 2.0 60 M weighs approximately 18.3 kg with dimensions of 1670 × 1006 × 38 mm. This is among the lighter options in the 335 Wp class, making it a suitable choice for roofs with limited load-bearing capacity. A structural assessment of the specific roof framing by a qualified installer or engineer is still recommended before any installation. ### Are the NEMO 2.0 60 M panels genuinely manufactured in Germany, and does it matter? Yes, Heckert Solar manufactures the NEMO 2.0 series exclusively at its facility in Chemnitz, Germany, using Industry 4.0 automated production. German manufacturing ensures rigorous quality control, consistent electrical parameters with tight tolerances, and a lower carbon footprint due to shorter supply chains. For the end investor, it means the module delivered to the roof reliably matches the datasheet figures. ### How many cells does the Heckert Solar NEMO 2.0 60 M have, and how does it perform under partial shading? The NEMO 2.0 60 M contains 60 monocrystalline PERC cells and is equipped with bypass diodes inside an IP68-rated junction box. Under partial shading — such as from a chimney or dormer — the active bypass diodes isolate shaded cells and limit losses to the affected string segment. For installations with persistent shading, adding power optimizers or microinverters is worth considering to maximize overall system yield. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/50202315661f33e028ce4-e772848deeda.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Cooler, lighter, +3.9 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Cooler, lighter, +3.9 pp | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | Cooler, +3.9 pp, +5 yr warranty | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +3.8 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +3.8 pp | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | Lighter, +3.6 pp, +5 yr warranty | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -25 W, +3.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | Lighter, +3.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +3.6 pp, +5 yr warranty | | [Heckert Solar NEMO 2.0 60 M BLACK 315](https://comparepv.com/panel/heckert-solar-nemo-2-0-60-m-black-315) | 315 W | -10 W, hotter, -0.6 pp | | [Heckert Solar NEMO 2.0 60 M BLACK 320](https://comparepv.com/panel/heckert-solar-nemo-2-0-60-m-black-320) | 320 W | Hotter, -0.3 pp | | [Heckert Solar NEMO® 2.0 60 M 330](https://comparepv.com/panel/heckert-solar-nemo-2-0-60-m-330) | 330 W | +0.2 pp | | [Jetion JT440SYK(B)](https://comparepv.com/panel/jetion-jt440syk-b) | 440 W | +115 W, cooler, +3.5 pp | | [Jetion JT435SYk(B)](https://comparepv.com/panel/jetion-jt435syk-b) | 435 W | +110 W, cooler, +3.3 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +3.2 pp, +15 yr warranty | | [Jetion JT430SYk(B)](https://comparepv.com/panel/jetion-jt430syk-b) | 430 W | +105 W, cooler, +3.0 pp | --- Source: https://comparepv.com/panel/heckert-solar-nemo-2-0-60-m-325-1 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.