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Heckert Solar Brand review

NEMO® 3.0 120 M 385Wp

385 Wp PERC
ComparePV verdict

Space saver, no clear weak spot

Rank 12,190 of 14,005
Compare panels Datasheet PDF
Power (Wp)
385
Typical for its class
Efficiency (%)
20.20
Typical · median 19.90%
Density (Wp/m²)
202.9
Strong · top 16%
Temp (%/°C)
-0.343
Strong · top 25%
Weight (kg)
20.5
Typical · median 21.4 kg
Warranty (yrs)
25
Typical · median 25 yrs

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.

Ranking

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.20% 19.90% Typical 11,956
Power density 202.9 199.0 Strong · top 16% 11,783
Temperature coefficient -0.343 -0.350 Strong · top 25% 10,348
Weight per kWp 53.2 55.8 Typical 7,083
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 0 caution
Best for

Residential, commercial and shaded-installations.

Strengths
202.9 watts per square metre

Top 16% of the PERC 350-400 W segment, against a median of 199.0.

-0.343 %/°C temperature coefficient

Top 25% of the PERC 350-400 W segment, against a median of -0.350.

Notes from the database
  • Efficiency of 20.2% is 0.8pp above the PERC 0-400W median (19.4%)
  • At 202.9 W/m² power density, this panel generates 8.5 W/m² more per unit area than PERC 0-400W median (194.4 W/m²)
  • At -0.34%/°C, hot weather performance is typical for PERC 0-400W panels
  • Ranked #11956 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 385 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.20 % Typical Segment median 19.90%
Vmpp · Impp 35.35 V · 10.93 A Operating point at max power
Voc · Isc 41.49 V · 11.42 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1790×1060×35 mm · 1.90 m² of roof
Weight 20.5 kg Typical Typical · median 21.4 kg
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.343 %/°C Strong top 25% of its segment
Coefficient Voc · Isc -0.263 · 0.033 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 80.0 % Equals 293 W guaranteed

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.343 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Heckert Solar NEMO® 3.0 120 M 385Wp 385 W 20.20% -0.343 20.5 kg You are here
GKA210M340W 340 W 23.00% - 16.2 kg -45 W, +2.8 pp, +5 yr warranty
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +2.8 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg Lighter, +2.8 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg Lighter, +2.8 pp, +5 yr warranty
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg Lighter, +2.8 pp, +5 yr warranty
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg Lighter, +2.8 pp, +5 yr warranty
LX-435M/182-108+ GG 435 W 22.81% -0.240 23.6 kg +50 W, cooler, +2.6 pp
JT435SYk(B) 435 W 22.70% -0.240 23.0 kg +50 W, cooler, +2.5 pp
SPR-MAX3-430-R 430 W 22.70% -0.270 21.2 kg Cooler, +2.5 pp, +15 yr warranty
LX-435M/182-108+ 435 W 22.61% -0.300 21.5 kg +50 W, cooler, +2.4 pp
NeMo® 3.0 120 M 375 375 W 19.80% -0.343 20.5 kg -10 W, -0.4 pp
NeMo® 3.0 120 M 380 380 W 20.00% -0.343 20.5 kg Very close match
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +125 W, cooler, +4.8 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +110 W, cooler, +4.6 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +120 W, cooler, +4.5 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +105 W, cooler, +4.3 pp

Found 30 panels of the same or similar size to this one, within ±10 mm. See them here Found 120 panels of the same or similar size to this one, within ±25 mm. See them here Found 390 panels of the same or similar size to this one, within ±50 mm. See them here Found 4092 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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