--- title: "Heckert Solar ZEUS 3.0 108 495WP PERFORMANCE Solar Panel: Specs & Datasheet | ComparePV" description: "Heckert Solar ZEUS 3.0 108 495WP PERFORMANCE solar panel. Specs: 24.25% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/heckert-solar-zeus-3-0-108-495wp-performance" image: "https://comparepv.com/og/panel/heckert-solar-zeus-3-0-108-495wp-performance.png" updated: 2026-10-23 --- # Heckert Solar ZEUS 3.0 108 495WP PERFORMANCE Space saver, no clear weak spot 167 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** Heckert Solar - **Model:** ZEUS 3.0 108 495WP PERFORMANCE - **Series:** ZEUS 3.0 - **Rated power:** 495 W - **Cell technology:** Back Contact - **Bifacial:** yes ## How it compares Compared against segment Back Contact 450-500 W (167 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 495 W | 475 W | Strong - top 4% | | | Module efficiency | 24.25% | 23.52% | Strong - top 15% | 190 | | Power density | 242.5 | 235.2 | Strong - top 12% | 174 | | Temperature coefficient | -0.260 | -0.260 | Typical | 515 | | Weight (kg) | 24.6 kg | 23.5 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 24.25% | 23.52% | Strong - top 15% | 190 | | Power density | 242.5 | 235.2 | Strong - top 12% | 174 | | Temperature coefficient | -0.260 | -0.260 | Typical | 515 | | Weight per kWp | 49.7 | 48.5 | Typical | 3,211 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **242.5 watts per square metre** - Top 12% of the Back Contact 450-500 W segment, against a median of 235.2. - **24.25% module efficiency** - Top 15% of the Back Contact 450-500 W segment, against a median of 23.52%. - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 495 W - **Efficiency:** 24.25 % - **Voltage at Pmax (Vmp):** 34.50 V - **Current at Pmax (Imp):** 14.35 A - **Open-circuit voltage (Voc):** 40.77 V - **Short-circuit current (Isc):** 15.20 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** Back Contact - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.6 kg - **Area:** 2.04 m2 - **Power density:** 242.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 421 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 190 of 14129 | | Power density | 174 of 14129 | | Temperature coefficient | 515 of 14129 | | Weight | 3211 of 14129 | | Warranty | 21 of 14129 | ## Pros - **N-Type Back Contact technology** - Moving all electrical contacts to the rear of the cell eliminates visible busbars and gridlines on the front surface, delivering a uniform aesthetic and reducing busbar-related shading losses - a feature still rare in the residential segment, where standard TOPCon modules without back-contact dominate. - **24.25% efficiency above peer comparables** - At 495 Wp, the 24.25% efficiency clearly outperforms comparable modules of the same power class, such as Hanersun Hitouch 5N (22.9%), Resun RS8K-M-FB (22.94%), and Solarspace SS8-60HD (22.87%) - a 1.3-1.4 pp gap, meaning a smaller roof footprint for the same installed capacity. - **Bifacial construction** - The module captures reflected light (albedo) from the mounting surface, boosting energy yield without increasing array footprint - particularly valuable on light-colored roofs, metal tile roofing, or ground-mounted installations. - **30-year product and linear power warranty** - Heckert Solar provides a 30-year product warranty and a 30-year linear power warranty, exceeding the market standard of roughly 12-15 years product and 25 years power coverage typical of most Asian manufacturers listed in the peer comparables. - **Tier-1 German manufacturer since 1992** - Heckert Solar is a German manufacturer founded in 1992, and combined with direct European warranty service, this reduces logistical and claims-handling risk compared to the less established peer brands (Hanersun, Resun, Solarspace). ## Cons - **Limited independent track record for BC tech** - The ZEUS 3.0 Performance Back Contact series is a relatively new design (launched 2025), so the market still lacks long-term, independent field performance data compared to mature TOPCon/PERC technologies that competitors have offered for years. ## About this series The **ZEUS 3.0 Performance** series from Heckert Solar comprises bifacial photovoltaic modules built on **N-Type Back-Contact** technology, where all electrical contacts are moved to the rear side of the cell. This leaves the front surface free of visible grid lines and busbars, delivering a uniform, clean aesthetic that is ideal for residential roofs with high street visibility. The use of 108 half-cut cells (6x18) combined with the bifacial design allows the module to additionally capture light reflected off the mounting surface, boosting energy yield without increasing the installed area. The series stands out for its **optimal partial shading behavior**, which limits production losses under difficult site conditions, and its **superior temperature behavior**, allowing modules to perform more efficiently during hot summer periods than conventional designs. The panel is set in a black anodized aluminum frame with enhanced mechanical strength, rated for high snow and wind loads and classified in the top hail-resistance category. The product is backed by a **30-year product warranty and linear power warranty**, guaranteed directly by a German manufacturer offering direct service. It is a solid choice for investors seeking durability, aesthetics, and stable output across varying irradiance conditions. ## Notable figures - At 24.2% efficiency, this panel is 0.7pp above typical \*\*Back Contact 450-500W\*\* modules (median: 23.5%) - At 242.5 W/m² power density, this panel generates 7.3 W/m² more per unit area than \*\*Back Contact 450-500W\*\* median (235.2 W/m²) - At -0.26%/°C, hot weather performance is typical for \*\*Back Contact 450-500W\*\* panels - At 24.6 kg, this panel is 1.1 kg heavier than the \*\*Back Contact 450-500W\*\* median (23.5 kg) - more demanding for installation crews - Bifaciality factor of 60% can add 3-9% extra yield with reflective mounting surface ## Questions ### What is N-Type Back-Contact technology in ZEUS 3.0 panels and how does it differ from standard cells? N-Type Back-Contact means all electrical contacts of the cell are moved to its rear side. As a result, the front surface of the panel has no visible grid lines or busbars, giving it a uniform, all-black appearance. This design also delivers higher conversion efficiency and better partial shading response compared to classic P-Type cells with visible busbars. ### Are Heckert Solar ZEUS 3.0 495 Wp panels suitable for a street-facing residential roof? Yes, that is one of the series' main design goals. The absence of visible busbars and grid lines on the front side gives the module a smooth, aesthetic all-black look, making it blend well with a home's facade visible from the street. The 495 Wp output, combined with a 108 half-cell layout, delivers high energy yield without increasing the mounting area. ### How do bifacial ZEUS 3.0 panels differ from standard single-sided modules? Bifacial ZEUS 3.0 panels generate electricity from both sides of the module, capturing light reflected from the ground, roof, or surroundings in addition to direct front-side irradiance. In practice this means an additional, though variable, energy gain depending on the albedo of the mounting surface, without needing to add more panels to the array. ### How long is the warranty on Heckert Solar ZEUS 3.0 modules and who provides it? The ZEUS 3.0 Performance series comes with a 30-year product warranty and a 30-year linear power warranty. The warranty is backed by Heckert Solar, a German manufacturer that offers direct service without intermediaries. This is one of the longest warranties currently available on the solar panel market. ### Do ZEUS 3.0 panels handle partial shading well, for example from chimneys or trees? Yes, the 108 half-cell Back-Contact design delivers optimal performance under partial shading conditions. This means lower energy losses when part of the panel is temporarily shaded, for instance by a chimney, antenna, or a nearby tree, compared to classic modules with full-size cells. ### Are Heckert Solar ZEUS 3.0 modules resistant to hail and harsh weather conditions? Yes, the panels are mounted in a black anodized aluminum frame with enhanced mechanical strength, rated to withstand snow and wind loads. The modules are classified in the highest hail resistance category, and their improved temperature coefficient allows them to perform more efficiently during hot summer days than classic panels. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Datenblatt_Zeus30performance_495Wp_DE_web-24876f0724d5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +15 W, cooler, +0.8 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Lighter, +0.6 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +0.4 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +10 W, +0.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Lighter, +0.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +0.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Lighter, +0.2 pp | | [Heckert Solar ZEUS 3.0 108 475W FULL BLACK](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-475w-full-black) | 475 W | -20 W, -0.9 pp | | [Heckert Solar ZEUS 3.0 108 480W FULL BLACK](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-480w-full-black) | 480 W | -15 W, -0.8 pp | | [Heckert Solar ZEUS 3.0+ 108 490WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-490wp) | 490 W | -0.2 pp | --- Source: https://comparepv.com/panel/heckert-solar-zeus-3-0-108-495wp-performance Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.