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Heckert Solar ZEUS 3.0+ 108 485WP PERFORMANCE
Heckert Solar Brand review

ZEUS 3.0+ 108 485WP PERFORMANCE

485 Wp Back Contact Bifacial 44%
ComparePV verdict

Space saver, no clear weak spot

Rank 2,068 of 14,005
Compare panels Datasheet PDF
Power (Wp)
485
Strong · top 21%
Efficiency (%)
24.30
Strong · top 7%
Density (Wp/m²)
242.7
Strong · top 6%
Temp (%/°C)
-0.260
Typical · median -0.260
Weight (kg)
24.2
Typical · median 23.5 kg
Warranty (yrs)
30
Typical · median 30 yrs

The ZEUS 3.0+ Performance series is Heckert Solar's answer to installations where maximizing power density on limited roof space is the priority. The panels use back-contact (ABC) technology, meaning no visible electrodes or busbars sit on the front cell surface - the entire area works more efficiently, and the module handles partial shading better, reducing the risk of hot spots. A glass-glass (double glass) construction combined with bifacial design captures additional radiation reflected off the ground, boosting real-world energy yield without increasing the installed footprint. This solution suits both residential and commercial investors who expect strong mechanical durability and stable performance under demanding climate conditions, including high irradiance and elevated temperatures. The Performance variant offers architectural flexibility while retaining the parameters of the flagship ZEUS model. The manufacturer backs the module with a long warranty period, translating into lower lifecycle energy cost (LCOE) and greater investment security for customers seeking proven German build quality.

Ranking

156 panels in the segment Back Contact 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 24.30% 23.50% Strong · top 7% 131
Power density 242.7 235.2 Strong · top 6% 140
Temperature coefficient -0.260 -0.260 Typical 511
Weight per kWp 49.9 48.0 Typical 3,275
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 2 caution
Best for

Residential, commercial and hot-climate.

Strengths
242.7 watts per square metre

Top 6% of the Back Contact 450-500 W segment, against a median of 235.2. Ranked 140th in the whole database.

24.30% module efficiency

Top 7% of the Back Contact 450-500 W segment, against a median of 23.50%. Ranked 131st in the whole database.

What owners get
Highest efficiency in the segment

Efficiency of 24.3-24.5% outperforms comparable 490 Wp modules - Solar-Fabrik Mono S4 Halfcut BC (24%), Renesola RS4-490NX-E1 (22.71%), and Silfab HN (20.9%). This means less roof area is needed to reach the same installed power.

Back-contact (ABC) technology, no busbars

The absence of visible electrodes and busbars on the front side increases active working cell area and reduces hot-spot risk under partial shading compared to conventional half-cut cells with front busbars.

43.6% bifaciality in a glass-glass design

A bifaciality factor of up to 43.6% combined with a double-glass construction captures light reflected off the ground, boosting real-world energy yield without increasing the installation footprint - particularly beneficial on flat roofs and facades with bright surroundings.

30-year product and power warranty

Heckert Solar backs the series with a uniform 30-year product and performance warranty, longer than the standard 25/30-year terms offered by many Tier-1 manufacturers, lowering the projected levelized cost of energy (LCOE).

German manufacturer with 30+ years of history

Heckert Solar has operated since 1992 and manufactures in Germany, an important factor for buyers seeking proven European build quality and local service support.

Trade-offs
Short market track record

The ZEUS 3.0+ Performance series launched in 2025, meaning there is no multi-year, independent field data on actual power degradation compared to longer-established competitor models.

Heavier glass-glass module weight

The glass-glass construction (2x2 mm) results in a module weight of about 24.2 kg at 1762x1134 mm dimensions, more than typical glass-polymer modules of similar power - roof structural load capacity should be verified before installation.

Notes from the database
  • 24.3% module efficiency - 0.8pp better than the Back Contact 450-500W median of 23.5%
  • At 242.7 W/m² power density, this panel generates 7.5 W/m² more per unit area than Back Contact 450-500W median (235.2 W/m²)
  • Temperature coefficient of -0.26%/°C matches the Back Contact 450-500W median
  • Bifaciality factor of 44% can add 2-7% extra yield with reflective mounting surface
  • In the top 1% for efficiency among all Back Contact panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 485 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 24.30 % Strong Segment median 23.50%
Vmpp · Impp 34.60 V · 14.02 A Operating point at max power
Voc · Isc 41.00 V · 14.84 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1762×1134×30 mm · 2.00 m² of roof
Weight 24.2 kg Typical Typical · median 23.5 kg
Cells 108 · Back Contact Monocrystalline
Bifaciality 44 % Rear output as a share of front
Coefficient Pmax -0.260 %/°C Typical median -0.260 of its segment
Coefficient Voc · Isc -0.220 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 30 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 85.0 % Equals 412 W guaranteed
Degradation 2.00 → 0.45 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Heckert Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 485 Wp appear here. The rest cover the whole series.

30-Year Linear Power Warranty 30-Year Linear Power Warranty Whole series Current-Voltage Characteristics Current-Voltage Characteristics Whole series

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
-
With bifacial gain
-

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

Heat losses
-0.260 %/°C against a segment median of -0.260
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Heckert Solar ZEUS 3.0+ 108 485WP PERFORMANCE 485 W 24.30% -0.260 24.2 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +25 W, cooler, +0.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +10 W, lighter, +0.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +20 W, cooler, +0.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Lighter
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +15 W, cooler
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +15 W, lighter
ZEUS 1.1 440WP Full Black 440 W 22.00% -0.280 20.9 kg -45 W, lighter, -2.3 pp
ZEUS 1.1 445W Black Frame 445 W 22.30% -0.280 20.9 kg -40 W, lighter, -2.0 pp

Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is back-contact (ABC) technology in the ZEUS 3.0+ Performance panels and how does it differ from classic PERC panels?
In back-contact (ABC) technology, the electrodes and busbars are moved to the rear side of the cell, so the front surface is fully active optically. This allows the ZEUS 3.0+ Performance module to reach efficiency up to about 24.5% and handle partial shading better than classic PERC panels, where visible busbars and metallization fingers reduce the active surface area.
Are ZEUS 3.0+ Performance panels suitable for a single-family home roof or more for commercial installations?
The series works well for both. High power of up to 490 Wp per panel allows a large system capacity on a limited residential roof area, while stable performance at high temperatures and a solid glass-glass construction also make it attractive for commercial installations and rooftop solar farms.
What does the bifacial design of the ZEUS 3.0+ Performance modules mean, and is it worth paying extra for?
The module is bifacial - the rear side also generates energy from light reflected off the ground, such as a light-colored roof or gravel. The manufacturer states a bifaciality factor of up to about 43%, which with proper mounting (e.g., on a raised structure with clearance) can boost real energy yield without increasing the installation footprint, so the extra cost typically pays off over the long run.
What warranty comes with Heckert Solar ZEUS 3.0+ Performance panels?
The manufacturer covers the ZEUS 3.0+ Performance modules with a 30-year product warranty and a 30-year power warranty. This is one of the longer warranty periods on the market and translates into a lower LCOE (levelized cost of energy), an important factor when choosing panels meant to perform for decades.
Do ZEUS 3.0+ Performance panels perform well in summer, under strong sunlight and high temperatures?
Yes, the glass-glass construction combined with back-contact technology improves heat dissipation and limits power loss at high temperatures compared to standard glass-backsheet modules. Additionally, the absence of visible busbars on the front side reduces the risk of hot-spot formation, which matters under intense, prolonged sun exposure.
How does the Performance version differ from the flagship ZEUS 3.0+ model?
The Performance version retains the key technical parameters of the flagship ZEUS model - the same ABC technology, glass-glass construction, and bifaciality - while offering greater architectural flexibility and availability in different color variants. It's a solution for customers who want the flagship's proven parameters with a build better matched to a specific project.
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