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Heckert Solar Brand review

ZEUS 1.1 Performance Black 455

455 Wp TOPCon Bifacial 80%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 4,739 of 14,129
Compare panels Datasheet PDF
Power (Wp)
455
Typical for its class
Efficiency (%)
22.80
Typical · median 22.52%
Density (Wp/m²)
227.7
Typical · median 225.2
Temp (%/°C)
-0.280
Strong · top 12%
Weight (kg)
23.7
Typical · median 24.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The ZEUS 1.1 Performance Black series is built for investors who want strong energy performance paired with an aesthetic suited to modern sloped and flat roof architecture. The module uses TOPCon TNC 2.0 cells arranged in a half-cut layout, which reduces current losses and improves operating stability even under partial shading. The glass-glass construction with a black anodized aluminum frame delivers a uniform, elegant look for the entire array, while also boosting resistance to moisture, corrosion, and PID degradation, translating into a longer service life in demanding climates. Thanks to its dual-side light absorption technology, the module delivers bifacial energy generation, capturing additional radiation reflected off the surrounding surface. High mechanical durability allows installation in regions exposed to heavy snow loads and strong winds. The manufacturer backs the panel with a 30-year product and performance warranty, giving investors confidence in stable long-term returns. This solution is aimed both at residential customers who value a clean visual finish and at commercial investors seeking high power density on limited roof space.

Ranking

1,096 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.80% 22.52% Typical 2,769
Power density 227.7 225.2 Typical 2,943
Temperature coefficient -0.280 -0.290 Strong · top 12% 1,347
Weight per kWp 52.1 52.2 Typical 5,573
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 1 caution
Best for

Residential, commercial, shaded-installations and BIPV.

Strengths
-0.280 %/°C temperature coefficient

Top 12% of the TOPCon 450-500 W segment, against a median of -0.290.

What owners get
TOPCon TNC 2.0 half-cut cells with bifacial

N-type TOPCon half-cut cell layout reduces current mismatch losses and delivers 22.8-23% efficiency, placing the series close to the top of the segment (SunKean SKT440~460M12-96D4 and Phono Solar Draco reach 23.02%). Bifacial light absorption additionally captures ground-reflected irradiance, boosting real-world energy yield.

30-year product and power warranty

Heckert Solar backs the module with a 30-year warranty covering both the product and power output, whereas many tier-1 competitors still standardize on 25-year power warranties paired with shorter product warranties (often 12-15 years). This meaningfully extends the safe investment payback horizon.

Made in Germany manufacturing since 1992

Heckert Solar manufactures exclusively at its Chemnitz and Langenwetzendorf facilities in Saxony, making it one of the few PV module makers retaining a full production cycle in Germany. This 33-year local manufacturing track record translates into shorter supply chains and tighter quality control compared to modules imported from Asia.

Glass-glass build with durability certifications

The module holds IEC 62716 (ammonia resistance), IEC 61701 (salt mist), and IEC 62804 (PID resistance) certifications, combined with a black anodized aluminum frame that ensures durability in harsh climates and high mechanical load resistance against snow and wind.

Trade-offs
No BNEF Tier 1 status

Heckert Solar does not appear on BloombergNEF's Tier 1 list, the bankability classification used for large commercial project financing, unlike some global competitors in the comparable segment. This can make bank financing for large commercial installations harder to secure, despite the brand's recognized premium position in the German market.

Notes from the database
  • At 22.8% efficiency, this panel is on par with typical TOPCon 450-500W modules
  • Power density of 227.7 W/m² matches the TOPCon 450-500W median
  • At -0.28%/°C, hot weather performance is typical for TOPCon 450-500W panels
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
  • #2769 for efficiency, #1347 for temperature performance out of 14129 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 455 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.80 % Typical Segment median 22.52%
Vmpp · Impp 30.44 V · 14.95 A Operating point at max power
Voc · Isc 36.10 V · 15.89 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 23.7 kg Typical Typical · median 24.0 kg
Cells 96 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.280 %/°C Strong top 12% of its segment
Coefficient Voc · Isc -0.240 · 0.046 %/°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 87.4 % Equals 398 W guaranteed
Degradation 1.00 → 0.40 % 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 455 Wp appear here. The rest cover the whole series.

Current-Voltage Characteristic Curves (Cell Temperature 25°C) Current-Voltage Characteristic Curves (Cell Temperature 25°C) 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
-0.280 %/°C against a segment median of -0.290
-
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 1.1 Performance Black 455 455 W 22.80% -0.280 23.7 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +40 W, lighter, +2.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +50 W, cooler, +1.9 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +50 W, cooler, +1.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +35 W, lighter, +1.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +45 W, cooler, +1.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +45 W, lighter, +1.7 pp
ZEUS 1.1 440WP Full Black 440 W 22.00% -0.280 20.9 kg -15 W, lighter, -0.8 pp
ZEUS 1.1 445W Black Frame 445 W 22.30% -0.280 20.9 kg -10 W, lighter, -0.5 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +55 W, cooler, +2.2 pp

Found 1402 panels of the same or similar size to this one, within ±10 mm. See them here Found 1432 panels of the same or similar size to this one, within ±25 mm. See them here Found 3651 panels of the same or similar size to this one, within ±50 mm. See them here Found 3999 panels of the same or similar size to this one, within ±100 mm. See them here

About the ZEUS 1.1 Performance Black series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What is the maximum power output of the ZEUS 1.1 Performance Black panel and what does it depend on in practice?
Modules from the ZEUS 1.1 Performance Black series reach a maximum power of up to 460 Wp thanks to TOPCon TNC 2.0 half-cut cells. The actual power of a given unit depends on the power class selected at purchase and operating conditions such as temperature, tilt angle, and irradiance level. Higher power density allows more energy to be generated from a limited roof area.
How does the TOPCon technology used in ZEUS 1.1 differ from older PERC cells?
TOPCon TNC 2.0 cells use an additional passivation layer that reduces electron recombination and increases conversion efficiency compared to conventional PERC cells. As a result, the panel achieves higher power on the same surface area, performs better at high temperatures, and shows lower power degradation over time, translating into higher energy yield over the entire lifetime of the installation.
Is the ZEUS 1.1 Performance Black panel suitable for both sloped and flat roofs?
Yes, the ZEUS 1.1 Performance Black series was designed for versatile use. The glass-glass construction with a black anodized aluminum frame provides high mechanical resistance to snow and wind loads, allowing installation on sloped roofs of single-family homes as well as on mounting structures for flat roofs in commercial installations.
What does bifacial technology offer in the ZEUS 1.1 panels, and is it worth the extra cost?
Bifacial technology enables energy generation from both sides of the module, capturing light reflected from the ground surface, such as a light-colored roof, gravel, or snow. In practice, this results in an additional energy yield of a few to over ten percent, depending on mounting height and ground albedo. The investment pays off especially on ground-mounted structures or light-colored flat roofs.
What warranty does Heckert Solar offer on the ZEUS 1.1 Performance Black panels?
Manufacturer Heckert Solar backs the ZEUS 1.1 Performance Black series with a 30-year product warranty and a 30-year linear power warranty. This covers both material and workmanship defects as well as a guaranteed level of energy output over a long time horizon, giving investors confidence in a stable return on their PV installation.
Do the ZEUS 1.1 Performance Black panels perform well in low temperatures and harsh climate conditions?
Yes, the glass-glass construction increases the panel's resistance to moisture, corrosion, and PID degradation, which is especially important in regions with high humidity and variable weather. TOPCon cells have a favorable temperature coefficient, allowing the panel to operate efficiently even at low temperatures typical of Polish and German winters.
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