--- title: "Heckert Solar ZEUS 3.0 108 475W FULL BLACK 475W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar ZEUS 3.0 108 475W FULL BLACK 475W solar panel. Specs: 23.30% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/heckert-solar-zeus-3-0-108-475w-full-black" updated: 2026-09-11 --- # Heckert Solar ZEUS 3.0 108 475W FULL BLACK Middle of its segment, heavy for its output 156 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** Heckert Solar - **Model:** ZEUS 3.0 108 475W FULL BLACK - **Series:** ZEUS 3.0 FullBlack - **Rated power:** 475 W - **Cell technology:** Back Contact - **Bifacial:** yes ## How it compares Compared against segment Back Contact 450-500 W (156 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 475 W | 475 W | Typical | | | Module efficiency | 23.30% | 23.50% | Typical | 1,017 | | Power density | 232.7 | 235.2 | Typical | 1,189 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight (kg) | 25.0 kg | 23.5 kg | Weak - bottom 6% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.30% | 23.50% | Typical | 1,017 | | Power density | 232.7 | 235.2 | Typical | 1,189 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight per kWp | 52.6 | 48.0 | Weak - bottom 6% | 6,259 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **52.6 kg per kWp** - Bottom 6% of the Back Contact 450-500 W segment, against a median of 48.0. Ranked 6,259th in the whole database. - **Best for:** Residential. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 475 W - **Efficiency:** 23.30 % - **Voltage at Pmax (Vmp):** 33.40 V - **Current at Pmax (Imp):** 14.23 A - **Open-circuit voltage (Voc):** 40.42 V - **Short-circuit current (Isc):** 14.88 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.200 %/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 - **Bifacial gain:** 25.00 ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 25.0 kg - **Area:** 2.04 m2 - **Power density:** 232.7 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:** 404 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1017 of 14005 | | Power density | 1189 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 6259 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Record-high 23.3-23.5% efficiency** - ZEUS 3.0 FullBlack clearly outperforms comparable 480 Wp modules among peer comparables: Sunket (22.24%), Shinson S-Blade (22.24%), and First Solar Series 6 Plus (19%). The 1-4.5 percentage point gap translates into higher energy yield from the same roof area. - **Back-contact design with no visible busbars** - All electrical connections are moved to the rear of the cell, resulting in a uniformly black front surface with no visible strips or gaps. This is a genuine aesthetic advantage over standard half-cut PERC/TOPCon modules, valuable for residential installations with high visual exposure. - **30-year product and power warranty** - Heckert Solar backs the series with a 30-year warranty on both product and performance - significantly longer than the typical 12-15 year product and 25-year power warranty offered by most Tier-1 manufacturers, giving investors 5-15 extra years of coverage. - **Improved -0.26%/K temperature coefficient** - This value is better than the typical -0.34% to -0.38%/K found in PERC modules, meaning lower power losses at high operating temperatures - important for poorly ventilated rooftops and warmer climates. - **Maximum Hail Class 5 rating** - The module achieves the highest hail resistance class, combined with the bifacial glass-glass construction this delivers greater mechanical durability than standard glass-backsheet modules, making the series suitable for locations with high risk of extreme weather events. ## Cons - **Limited operational track record** - The series launched in 2025, so despite the 30-year warranty there is not yet multi-year field performance data for this specific generation of back-contact technology - unlike mature, widely field-tested PERC/TOPCon modules that have been on the market for years. ## About this series The ZEUS 3.0 FullBlack series is Heckert Solar's answer to the demand for aesthetically refined, high-performance photovoltaic installations on residential roofs and demanding commercial buildings. The modules rely on **back-contact cell technology**, in which all electrical connections are moved to the rear side of the cell - as a result, the front surface shows no visible busbars and the entire area works as active cell surface. This results in a uniformly black, minimalist surface without gaps or stripes, making the ZEUS 3.0 an ideal choice wherever **rooftop aesthetics** matter as much as energy performance. The back-contact design also mitigates typical shading issues - the module maintains higher current output even under partial shading and shows lower susceptibility to **hot spots** thanks to more uniform current flow. The panels are built on a **bifacial glass-glass** structure, which translates into greater mechanical durability and a longer service life. In addition, a high hail resistance class and robust load-bearing parameters make the series suitable for demanding climate conditions. The manufacturer backs the modules with a **30-year warranty** covering both product and performance, giving investors long-term peace of mind. This is a solution for customers seeking a combination of modern design, high power density on limited roof space, and premium-grade reliability. ## Notable figures - At 23.3% efficiency, this panel is on par with typical \*\*Back Contact 450-500W\*\* modules - Power density of 232.7 W/m² matches the \*\*Back Contact 450-500W\*\* median - At -0.26%/°C, hot weather performance is typical for \*\*Back Contact 450-500W\*\* panels - At 25.0 kg (1.5 kg above \*\*Back Contact 450-500W\*\* median of 23.5 kg), requires checking roof load capacity - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What is back-contact cell technology in the ZEUS 3.0 FullBlack panels and how does it differ from standard modules? In back-contact technology, all electrical connections of the cell are moved to its rear side, so no busbars or soldering ribbons are visible on the front. The entire cell surface functions as active area, boosting output per roof area while giving the module a uniformly black, seamless appearance without the grid pattern typical of conventional modules. ### Are ZEUS 3.0 FullBlack panels a good fit for a residential roof where aesthetics matter? Yes, this is the series' primary use case. Thanks to the back-contact design, the module has a uniformly black surface with no visible busbars, contrasting frames, or gaps between cells. At 1800 x 1134 x 30 mm and up to 480 Wp, it delivers high power density even on limited pitched-roof area while keeping a consistent, minimalist look. ### How does the glass-glass bifacial construction affect the durability and energy yield of ZEUS 3.0? The glass-glass structure replaces the standard backsheet with a second glass layer, increasing mechanical rigidity and resistance to moisture and UV degradation, extending the module's real-world lifespan. Bifaciality also lets the panel capture light reflected off the ground onto its rear side, which can boost total energy yield by several percent on bright, reflective roofing surfaces. ### Do ZEUS 3.0 FullBlack panels lose performance under partial shading, e.g. from a chimney or antenna? Thanks to the even, distributed current flow of the back-contact structure, the panel handles partial shading better than conventional modules with front-side busbars. This lowers the risk of hot spots and helps maintain higher output current even when part of the surface is shaded, which matters for roofs with chimneys, dormers, or antennas. ### What warranty does Heckert Solar offer on the ZEUS 3.0 FullBlack series and what does it cover? Heckert Solar, a German manufacturer, backs the ZEUS 3.0 FullBlack series with a 30-year product warranty and a 30-year performance warranty. This provides long-term protection against material and workmanship defects as well as a guaranteed power output level throughout the system's operating life, giving investors strong confidence in their return on investment. ### Are ZEUS 3.0 FullBlack panels resistant to hail and harsh weather conditions? Yes, the modules carry a high hail resistance rating (hail class 5) along with robust mechanical strength derived from the glass-glass construction, making them suitable for demanding climates, including heavy hail, snow loads, and wind. This is an added reason to choose this series for roofs in regions with variable, harsh weather. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/202511_Datenblatt_Zeus30_475-480Wp_DE_web-27c66541aefa.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +35 W, cooler, +1.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +20 W, lighter, +1.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +30 W, cooler, +1.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +15 W, lighter, +1.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +25 W, cooler, +1.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +25 W, lighter, +1.2 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 | Very close match | | [Heckert Solar ZEUS 3.0+ 108 490WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-490wp) | 490 W | +15 W, +0.7 pp | --- Source: https://comparepv.com/panel/heckert-solar-zeus-3-0-108-475w-full-black 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.