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Heckert Solar Brand review

APOLLON 1.0 108 M (Black Frame) - 435 W

435 Wp TOPCon
ComparePV verdict

Middle of its segment, weak in heat

Rank 10,175 of 14,005
Compare panels Datasheet PDF
Power (Wp)
435
Typical for its class
Efficiency (%)
22.00
Typical · median 22.00%
Density (Wp/m²)
220.2
Typical · median 220.2
Temp (%/°C)
-0.320
Weak · bottom 7%
Weight (kg)
21.3
Typical · median 22.0 kg
Warranty (yrs)
25
Weak · bottom 7%

The Heckert Solar APOLLON 1.0 108 M series is designed for high energy yield from a limited roof area, without compromising aesthetics and durability. The use of 108 half-cut monocrystalline solar cells helps minimize losses under partial shading and improves stability in real-world conditions, such as those caused by chimneys, skylights, or multi-roof installations. The modules utilize TOPCon technology, which is valued for its good performance at higher temperatures and its efficient energy collection in the morning and during cloudy conditions, resulting in more predictable energy production in the Polish climate.

The version with a black frame makes it easy to integrate into modern roofs and projects where a consistent appearance is important. Thanks to its refined design and light-reflecting glass coating, the APOLLON 1.0 108 M is suitable for both single-family homes and commercial buildings, where reliability and stable operating parameters over many years are crucial. ([fr.enfsolar.com](https://fr.enfsolar.com/pv/panel-datasheet/crystalline/63323?utm_source=openai))

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.00% 22.00% Typical 6,517
Power density 220.2 220.2 Typical 6,478
Temperature coefficient -0.320 -0.290 Weak · bottom 7% 8,312
Weight per kWp 49.0 51.4 Typical 2,656
Performance warranty 25 yrs 30 yrs Weak · bottom 7% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Hot climates and owners who want a long output guarantee.

Watch-outs
-0.320 %/°C temperature coefficient

Bottom 7% of the TOPCon 400-450 W segment, against a median of -0.290. Ranked 8,312th in the whole database.

25 year performance warranty

Bottom 7% of the TOPCon 400-450 W segment, against a median of 30 yrs. Ranked 9,798th in the whole database.

What owners get
Made in Germany – Fully Auditable Quality

Heckert Solar is the last active PV module manufacturer with continuous production on German soil (facilities in Chemnitz and Langenwetzendorf, operating since 1992). This translates into short supply chains, full manufacturing process auditability, and compliance with the European country-of-origin requirements of public tenders and subsidy programs.

Low Temperature Coefficient of -0.25%/°C (TOPCon)

N-type TOPCon technology delivers a temperature coefficient of -0.25%/°C – a clear improvement over the typical -0.35%/°C of previous-generation PERC modules. At realistic summer module temperatures (60–70°C), this translates to approximately 3–5% higher energy yield compared to PERC-based systems.

108 Half-Cut M10 Cells + AR Coating

The half-cut M10 cell format reduces internal currents and resistive losses while improving resilience to partial shading (e.g., from chimneys or dormers). The anti-reflective (AR) coating on the glass increases light absorption at the low angles of incidence characteristic of Polish latitudes (50–54°N), which is particularly relevant outside the summer season.

Stäubli MC4-EVO 2A Connectors as Standard

The module ships factory-fitted with Stäubli MC4-EVO 2A connectors, compatible with power optimizers (SolarEdge, Tigo). This eliminates the need for wiring adapters in complex roof installations and improves connection reliability over the system's service life.

1500 V DC System Voltage

Support for system voltages up to 1500 V DC enables longer strings and therefore fewer inverters in commercial installations, reducing balance-of-system (BoS) costs and simplifying DC-side wiring.

Trade-offs
Efficiency Up to 22.3% – Below Peer Comparable Median

The maximum efficiency of the series is 22.3%, while direct competitors in the same segment achieve: Luxor Solar ECO LINE N-TYPE TOPCon – 22.86%, Seraphim Nebula – 22.53%, KDM Kingdom Solar – 22.5%. For the same roof area, a gap of 0.5–0.6 percentage points translates to approximately 2–3% lower annual energy yield with no corresponding price benefit for the installer.

Not Listed on Bloomberg NEF Tier-1

Heckert Solar does not appear on the BloombergNEF Tier-1 list (which assesses bankability, not technical quality). This may complicate securing third-party bank financing for commercial projects above 50 kW and could affect insurance policy terms with carriers that require Tier-1 status as a qualification criterion.

25-Year Power Warranty at 80% – Below Market Leaders

The declared power output after 25 years is 80% of Pnom – a standard value, but lower than the warranties offered by leading Tier-1 manufacturers: Jinko Tiger Neo and Trina Vertex N guarantee 84.8–87.4% after 25 years. A gap of 4–7 percentage points over a long operational horizon may represent real energy production losses estimated at 3–6 MWh per 10 kWp of installed capacity.

Notes from the database
  • Efficiency of 22.0% matches the TOPCon 400-450W median
  • At 220.2 W/m² power density, roof space requirements are typical for TOPCon 400-450W panels
  • -0.32%/°C temperature coefficient - 0.03pp worse than TOPCon 400-450W median (-0.29%/°C), expect higher hot weather losses
  • Ranked #6517 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.00 % Typical Segment median 22.00%
Vmpp · Impp 33.89 V · 12.85 A Operating point at max power
Voc · Isc 39.69 V · 13.56 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1742×1134×35 mm · 1.98 m² of roof
Weight 21.3 kg Typical Typical · median 22.0 kg
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.320 %/°C Weak bottom 7% of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
Product warranty 15 years Hardware defects only
Performance warranty 25 years Weak bottom 7% · median 30 yrs
End-of-warranty output 80.0 % Equals 331 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
-0.320 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Heckert Solar APOLLON 1.0 108 M (Black Frame) - 435 W 435 W 22.00% -0.320 21.3 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, cooler, +2.3 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +2.3 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, cooler, +2.3 pp
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +2.3 pp
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, cooler, +2.3 pp
APOLLON 1.0 108 M (Black Frame) - 430 W 430 W 21.80% -0.320 21.3 kg Very close match
APOLLON 1.0 108 M (Black Frame) - 440 W 440 W 22.30% -0.320 21.3 kg +0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +75 W, cooler, +3.0 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +60 W, cooler, +2.8 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +70 W, cooler, +2.7 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +55 W, cooler, +2.5 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +65 W, cooler, +2.5 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +65 W, cooler, +2.5 pp

Found 29 panels of the same or similar size to this one, within ±10 mm. See them here Found 3284 panels of the same or similar size to this one, within ±25 mm. See them here Found 3402 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranties does the Heckert Solar APOLLON 1.0 108 M come with?
Heckert Solar provides a 15-year product warranty and a 25-year linear power warranty on the APOLLON 1.0 108 M. The module retains at least 90% of rated power after 10 years and at least 80% after 25 years. Both warranties are backed by a German manufacturer with a stable service infrastructure.
Does TOPCon technology in the APOLLON 1.0 108 M make a real difference in Central European weather conditions?
Yes. TOPCon cells offer a low temperature coefficient of approximately -0.25%/°C, which reduces power losses on hot summer days compared to PERC modules. More importantly for Central European climates, TOPCon performs well under diffuse light — the APOLLON 1.0 108 M generates power more efficiently on overcast days and in the early morning hours than previous-generation cell technologies.
How do the 108 half-cut cells in the APOLLON 1.0 108 M handle partial shading from a chimney or dormer?
Half-cut cells reduce operating current per cell, which lowers resistive losses and limits the impact of partial shading. The module is split into two independent electrical sections, so shading one section does not fully block the other. On roofs with chimneys, dormers, or roof windows, this design can improve annual energy yield by several percent compared to full-cell modules.
What are the dimensions and weight of the APOLLON 1.0 108 M — will it fit on a standard roof?
The panel measures 1,742 × 1,134 × 35 mm and weighs 21.3 kg. This is a standard M10 format compatible with typical aluminum racking systems. With up to 440 Wp output and module efficiency above 22%, you get a high energy density — 10 panels require approximately 20 m² of roof surface.
Is the black frame variant of the APOLLON 1.0 108 M any different technically from the standard version?
The electrical specifications are identical — 440 Wp peak power, TOPCon cell technology, 16 busbars, and Stäubli EVO2 connectors. The black frame is purely an aesthetic choice that gives the array a uniform dark appearance popular on modern homes and clay-tile roofs. The black anodized finish runs slightly warmer in direct sunlight, but the effect on energy yield is negligible.
Where are Heckert Solar APOLLON 1.0 108 M panels manufactured, and why does it matter?
The APOLLON 1.0 108 M is manufactured exclusively in Germany at Heckert Solar's facility in Chemnitz. EU production means compliance with strict quality standards, no exposure to import tariffs on non-EU modules, and straightforward warranty claims. For installers and investors ordering from Poland, this is a meaningful logistical and quality advantage.
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