--- title: "Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE 490W Solar Panel - Specs & Review | ComparePV" description: "Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE 490W solar panel. Specs: 24.00% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/heckert-solar-zeus-3-0-108-490wp-performance" updated: 2026-09-13 --- # Heckert Solar ZEUS 3.0+ 108 490WP PERFORMANCE Efficiency leader, heavy for its output 156 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** Heckert Solar - **Model:** ZEUS 3.0+ 108 490WP PERFORMANCE - **Series:** ZEUS 3.0 Performance - **Rated power:** 490 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) | 490 W | 475 W | Strong - top 9% | | | Module efficiency | 24.00% | 23.50% | Strong - top 22% | 303 | | Power density | 240.1 | 235.2 | Strong - top 23% | 313 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight (kg) | 24.8 kg | 23.5 kg | Weak - bottom 21% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 24.00% | 23.50% | Strong - top 22% | 303 | | Power density | 240.1 | 235.2 | Strong - top 23% | 313 | | Temperature coefficient | -0.260 | -0.260 | Typical | 511 | | Weight per kWp | 50.6 | 48.0 | Weak - bottom 21% | 4,047 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **24.00% module efficiency** - Top 22% of the Back Contact 450-500 W segment, against a median of 23.50%. - **240.1 watts per square metre** - Top 23% of the Back Contact 450-500 W segment, against a median of 235.2. ### Watch out for - **50.6 kg per kWp** - Bottom 21% of the Back Contact 450-500 W segment, against a median of 48.0. - **Best for:** Residential, commercial, shaded-installations and hot-climate. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 490 W - **Efficiency:** 24.00 % - **Voltage at Pmax (Vmp):** 34.04 V - **Current at Pmax (Imp):** 14.40 A - **Open-circuit voltage (Voc):** 41.02 V - **Short-circuit current (Isc):** 15.10 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 - **Bifacial gain:** 25.00 ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.8 kg - **Area:** 2.04 m2 - **Power density:** 240.1 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:** 416 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 303 of 14005 | | Power density | 313 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 4047 of 14005 | | Warranty | 21 of 14005 | ## Pros - **24% efficiency matches segment leader** - The 24% efficiency ties with the top comparable model (Solar-Fabrik Mono S4 Halfcut BC – 24%) and clearly outperforms Renesola RS4-490NX-E1 (22.71%) and Silfab HN (20.9%) at the same 490 Wp power class, meaning less roof area is needed for the same installed capacity. - **30-year product and power warranty** - Heckert Solar backs the module with 30 years of both product and power warranty — well beyond the industry-standard 12-25 years product / 25 years power warranty offered by most tier-1 manufacturers, reducing long-term investment risk. - **Back-Contact cell technology with no front busbars** - N-type ABC (Advanced Back Contact) cells eliminate visible busbars and ribbons on the front side, increasing active photovoltaic surface and delivering a uniform black aesthetic, with a declared bifaciality of up to 43.6%. - **Bifacial glass-glass construction (2×2 mm)** - The double 2×2 mm glass laminate boosts energy yield by capturing rear-side reflected light and improves mechanical rigidity and micro-crack resistance compared to glass-backsheet designs. - **Improved partial-shading tolerance** - The half-cut cell layout combined with back-contact architecture reduces power loss under partial shading (e.g., from a chimney or an adjacent module row) compared to conventional full-cell PERC panels. ## Cons - **Production discontinued** - The ZEUS 3.0 Performance series was launched in 2025 and already discontinued in 2026 (a one-year production cycle), which — despite the stated 30-year warranty — raises concerns about long-term service continuity and availability of identical replacement modules for future array expansion. - **Heavier glass-glass build** - At 4362×1134×30 mm and 24.2 kg, the module is heavier than comparable glass-backsheet panels of the same power class, increasing roof load requirements and installation labor for the mounting crew. ## About this series The ZEUS 3.0 Performance series is Heckert Solar's flagship line, built for investors who want maximum energy yield from limited roof space. These panels use **Back-Contact technology**, where the entire cell surface acts as active photovoltaic area with no visible busbars on the front - delivering both a sleek, uniformly black appearance and a real boost in energy harvest. The **bifacial glass-glass design** captures light reflected off the roof or ground as well, increasing total power output without expanding the array footprint. The use of half-cut cells improves resilience to partial shading, giving the module **optimal shading behavior** and reducing performance losses when part of the panel is blocked by a chimney, tree, or an adjacent row of modules. A low power temperature coefficient means the series performs better on hot days than conventional PERC modules, effectively lowering LCOE in warmer climates. The whole product is backed by a **30-year product and performance warranty**, issued directly by the German manufacturer, giving investors and installers confidence in the long-term value of their investment. The ZEUS 3.0 Performance is the right choice for anyone prioritizing aesthetics, durability, and maximum energy yield per square meter of roof. ## Notable figures - Efficiency of 24.0% matches the \*\*Back Contact 450-500W\*\* median - At 240.1 W/m² power density, this panel generates 4.9 W/m² more per unit area than \*\*Back Contact 450-500W\*\* median (235.2 W/m²) - Temperature coefficient of -0.26%/°C matches the \*\*Back Contact 450-500W\*\* median - Weight of 24.8 kg is 1.3 kg above \*\*Back Contact 450-500W\*\* median (23.5 kg) - verify structural support - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces ## Questions ### Is the Heckert Solar ZEUS 3.0 Performance series still available for purchase? The ZEUS 3.0 Performance series has been discontinued by Heckert Solar. Panels may still be available through distributors as limited stock, but once inventory is depleted the manufacturer does not plan to resume production of this model. Product and power warranties remain valid for units already purchased, regardless of the series discontinuation. ### What is Back Contact technology in the ZEUS 3.0 Performance panels and does it offer a real advantage? Back Contact is a technology where all electrical contacts of the cell are placed on its rear side, leaving the front surface free of visible busbars. This results in a larger active photovoltaic surface and higher energy yield from the same roof area, while also giving the module a uniform, sleek black appearance without visible grid lines. ### How does the bifacial glass-glass construction in ZEUS 3.0 Performance differ from standard monofacial panels? ZEUS 3.0 Performance bifacial glass-glass panels generate electricity from both the front and rear sides of the module, capturing light reflected off the roof, ground, or a light-colored mounting surface. With proper installation, such as on a light-colored roof or elevated mounting, this can yield several percent more energy without adding extra panels to the array. ### How much maximum power do ZEUS 3.0 Performance panels produce and who are they best suited for? The modules reach up to 490 Wp of maximum power, making them a strong choice for investors with limited roof space who want to maximize energy output per square meter. Higher unit power means fewer panels are needed to reach a target system size, which reduces mounting structure and labor costs. ### What warranty comes with Heckert Solar ZEUS 3.0 Performance panels? Manufacturer Heckert Solar, based in Germany, provides a 30-year warranty on both the product and the power output. This is among the longest warranties available in the solar market, issued directly by the German manufacturer, giving investors confidence in long-term service support and investment value. ### Do ZEUS 3.0 Performance panels perform well under partial shading, such as from a chimney or tree? Yes, thanks to half-cut cell technology the module is divided into independent sections, so shading on one part of the panel has a smaller impact on the overall output compared to full-size cell modules. This design works well for installations exposed to partial shading from chimneys, antennas, or adjacent rows of panels. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/202607_Datenblatt_Zeus30performance_490Wp_DE_web-595c99f12604.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +20 W, cooler, +1.0 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Lighter, +0.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +15 W, cooler, +0.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Lighter, +0.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +0.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +10 W, lighter, +0.5 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 | -15 W, -0.7 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 | -10 W, -0.5 pp | --- Source: https://comparepv.com/panel/heckert-solar-zeus-3-0-108-490wp-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.