--- title: "Heckert Solar Apollon 1.0 108 M 430 430W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar Apollon 1.0 108 M 430 430W solar panel. Specs: 21.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/heckert-solar-apollon-1-0-108-m-430" updated: 2026-09-11 --- # Heckert Solar Apollon 1.0 108 M 430 Middle of its segment, weak in heat 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Heckert Solar - **Model:** Apollon 1.0 108 M 430 - **Series:** Apollon 1.0 108 M - **Rated power:** 430 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 430 W | 435 W | Typical | | | Module efficiency | 21.80% | 22.00% | Typical | 7,022 | | Power density | 217.7 | 220.2 | Typical | 7,169 | | Temperature coefficient | -0.320 | -0.290 | Weak - bottom 7% | 8,312 | | Weight (kg) | 21.3 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.80% | 22.00% | Typical | 7,022 | | Power density | 217.7 | 220.2 | Typical | 7,169 | | Temperature coefficient | -0.320 | -0.290 | Weak - bottom 7% | 8,312 | | Weight per kWp | 49.5 | 51.4 | Typical | 3,084 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,798 | ### Watch out for - **-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. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates and owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 430 W - **Efficiency:** 21.80 % - **Voltage at Pmax (Vmp):** 33.71 V - **Current at Pmax (Imp):** 12.77 A - **Open-circuit voltage (Voc):** 39.67 V - **Short-circuit current (Isc):** 13.49 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.320 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 ### Physical - **Length:** 1742 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 21.3 kg - **Area:** 1.98 m2 - **Power density:** 217.7 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:** 327 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7022 of 14005 | | Power density | 7169 of 14005 | | Temperature coefficient | 8312 of 14005 | | Weight | 3084 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **100% German Manufacturing** - Heckert Solar is the only active PV module manufacturer that carries out its entire production process exclusively in Germany (facilities in Chemnitz and Langenwetzendorf). This translates into rigorous TÜV-compliant quality control and a significantly lower carbon footprint compared to modules imported from Asia — an increasingly important factor for projects subject to ESG requirements. - **Low Temperature Coefficient** - N-type TOPCon technology delivers a Pmax temperature coefficient of -0.32%/°C, a clear advantage over typical PERC modules (-0.35 to -0.40%/°C). Under Polish summer conditions (module temperature ~65°C), this translates to 1–3% higher energy yield compared to older technology at the same rated power. - **Degradation ≤0.45%/year (N-type)** - N-type cells eliminate the LID (Light-Induced Degradation) phenomenon characteristic of P-type technology. The manufacturer specifies first-year degradation of ≤2%, followed by a maximum of 0.45% per year thereafter. The 25-year power output warranty ensures retention of >88% of rated power at the end of the warranty period. - **108 Half-Cut Cells — Enhanced Shade Tolerance** - The 108-cell half-cut design reduces resistive losses and limits shading impact to a single cell row. In Poland's climate — characterized by frequent cloud cover and seasonal shading — this results in more stable annual energy yield compared to full-cell modules. - **Stäubli MC4 EVO2 Connectors as Standard** - The series ships factory-fitted with genuine Stäubli MC4 EVO2 connectors (IP68-rated, low contact resistance), the industry's premium connector standard. This eliminates the risk of arc-fault-induced fires at the connector — one of the most common causes of PV system failures. ## Cons - **Efficiency Below Segment Leaders** - The maximum efficiency of 22.3% is 0.56 percentage points lower than the Luxor ECO LINE N-TYPE TOPCon Non-Reflect (22.86%) and 0.23 percentage points lower than the Seraphim Nebula (22.53%) at the same rated power of 440 Wp. For installations with severely constrained roof area, this difference may be decisive in favor of an alternative series. - **Product Warranty of Only 15 Years** - The product warranty stands at 15 years, whereas the same manufacturer's newer Heckert Zeus series already offers a 30-year product warranty, and 25 years is increasingly the premium standard within the TOPCon segment. For investors planning a 25+ year system lifetime, the shorter product warranty represents a tangible financial risk. - **Limited Production Scale Following Restructuring** - In 2024, Heckert Solar reduced its workforce by approximately 95 employees (from ~300 to ~200) under pricing pressure from Chinese imports. Despite no insolvency risk and continued production through 2025–2026, the reduced operational scale may affect module availability for large orders and service response times compared to Asian Tier-1 manufacturers. ## About this series The Heckert Solar Apollon 1.0 108 M series is an advanced solution based on innovative **N-type TOPCon cell technology**, which redefines efficiency standards in European photovoltaics. By utilizing 108 half-cut cells, these panels effectively minimize energy losses caused by shading, translating into significantly more stable yields in variable Polish climate conditions. A key differentiator of this line is **production carried out entirely in Germany**, which provides investors with rigorous quality control and a smaller carbon footprint compared to components imported from Asia. These modules solve the problem of premature power degradation, guaranteeing excellent performance parameters even after many years of intensive use. For the end customer, this means **maximum energy yield from a smaller roof area**, which is crucial for projects with limited mounting space. Apollon 1.0 108 M is the ideal choice for single-family homes and modern office buildings, where uncompromising reliability and aesthetic workmanship matter. What distinguishes this series from the competition is, above all, **exceptional resistance to mechanical loads** and precise component fitting, which ensures higher safety for the entire photovoltaic installation without the risk of dangerous micro-cracks. ## Notable figures - At 21.8% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - At 217.7 W/m² power density, roof space requirements are typical for \*\*TOPCon 400-450W\*\* panels - At -0.32%/°C, loses 0.03pp more power per degree than \*\*TOPCon 400-450W\*\* median (-0.29%/°C) - #7022 for efficiency, #8312 for temperature performance out of 14005 panels ## Questions ### What warranty comes with the Heckert Solar Apollon 1.0 108 M panels? The Apollon 1.0 108 M series comes with a 15-year product warranty and a 25-year power output warranty. Heckert Solar guarantees at least 90% of nominal power after 10 years and a minimum of 80% after 25 years. Because the manufacturer is based in Germany, warranty claims are handled directly in Europe, which means faster and simpler processes compared to brands headquartered outside the EU. ### What is TOPCon technology and why does it matter in the Apollon 1.0 108 M? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture that reduces electron recombination losses compared to standard PERC cells. In the Apollon 1.0 108 M this translates to a module efficiency of up to 22.7%, a low temperature coefficient of -0.25%/K, and slower long-term power degradation. Over a 25-year system lifetime, these gains add up to meaningfully more kilowatt-hours generated per installed kilowatt-peak. ### Do the Heckert Solar Apollon 1.0 108 M panels perform well in winter and overcast conditions? Yes. The low temperature coefficient of -0.25%/K means the modules actually produce more power on cold, clear winter days than they would at high summer temperatures. The 108 half-cut cell layout also limits the impact of partial shading common during short winter days. In the Polish climate, with frequent passing clouds and low solar angles in winter, both features contribute noticeably to annual energy yield. ### What is the advantage of the half-cut cells used in the Apollon 1.0 108 M over full-size cells? Half-cut cells are laser-cut into two equal halves, halving the current each cell carries. This reduces resistive losses inside the module and lowers the risk of microcracks during shipping and installation. In the Apollon 1.0 108 M, the 108 half-cut cell configuration also means that partial shading from a chimney or antenna affects only a portion of the panel, while the rest continues generating power efficiently. ### Is the Apollon 1.0 108 M suitable for a sloped residential roof? Yes. At 1742 x 1134 x 35 mm and 21.3 kg, the module is compatible with standard aluminum racking systems used on pitched roofs. The 440 Wp output means fewer panels are needed to reach a target system size, which is important when roof space is limited. The module works equally well on gable and hip roofs, provided the mounting structure is correctly specified by a certified installer. ### Why choose a German-made panel when Asian alternatives cost less upfront? German manufacturing means strict quality control aligned with European standards, resulting in tighter power tolerances and lower defect rates across a production batch. Heckert Solar has over 30 years of experience and handles warranty claims directly, eliminating the risk of a distant supplier becoming unavailable. The shorter supply chain also carries a lower carbon footprint, which matters for investors with ESG requirements or green building certification goals. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/db-apollon-1-0-m-430-440wp-89bd49436fee.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A480-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a480-mah54mw) | 480 W | +50 W, cooler, +2.3 pp | | [Gokin GK-5-54HG-480M](https://comparepv.com/panel/gokin-gk-5-54hg-480m) | 480 W | +50 W, cooler, +2.3 pp | | [Jinko Solar JKM480N-48QL6-DB-F2-EU](https://comparepv.com/panel/jinko-solar-jkm480n-48ql6-db-f2-eu) | 480 W | +50 W, cooler, +2.2 pp | | [Gamko New Energy GKA96N-PRO-480W](https://comparepv.com/panel/gamko-new-energy-gka96n-pro-480w) | 480 W | +50 W, +2.2 pp, +5 yr warranty | | [Heckert Solar APOLLON 1.0 108 M (Black Frame) - 435 W](https://comparepv.com/panel/heckert-solar-apollon-1-0-108-m-black-frame-435-w) | 435 W | Very close match | | [Heckert Solar APOLLON 1.0 108 M (Black Frame) - 440 W](https://comparepv.com/panel/heckert-solar-apollon-1-0-108-m-black-frame-440-w) | 440 W | +10 W, +0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +80 W, cooler, +3.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +65 W, cooler, +3.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +75 W, cooler, +2.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +60 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +70 W, cooler, +2.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +70 W, cooler, +2.7 pp | --- Source: https://comparepv.com/panel/heckert-solar-apollon-1-0-108-m-430 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.