Strong in heat, no clear weak spot
The ZEUS 1.1 Performance series is engineered for investors who expect maximum durability and stable energy yields over decades of operation. The panels feature N-Type TOPCon cells in a half-cut configuration, reducing resistive losses and improving performance under partial shading. The glass-glass construction combined with bifacial energy generation captures light reflected from the ground, boosting real-world yield without requiring any additional roof space. Thanks to strong resistance to PID, ammonia, and salt mist, the modules perform reliably in agricultural installations as well as in coastal locations, where aggressive environmental conditions quickly degrade cheaper alternatives. A reinforced frame and high snow and wind load tolerance make the ZEUS 1.1 Performance a solid choice for roofs exposed to demanding climate conditions. The entire series is backed by a 30-year product and performance warranty issued directly by the German manufacturer, translating into lower investment risk and a predictable LCOE throughout the system's service life.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
Top 12% of the TOPCon 450-500 W segment, against a median of -0.290.
Top 21% of the TOPCon 450-500 W segment, against a median of 225.2.
Top 22% of the TOPCon 450-500 W segment, against a median of 22.52%.
The N-Type TOPCon half-cut cell design reduces resistive losses and improves partial-shading performance; at 23% efficiency it matches top-tier peers such as the Risen RSM96-11-460 (23%).
The dual-glass build (2x2mm) combined with bifacial energy harvesting captures ground-reflected irradiance, boosting real-world yield without requiring extra roof area.
Heckert Solar provides a 30-year warranty on both product and power directly as the German manufacturer, longer than the standard 25 years offered by many Tier-1 competitors, materially lowering investment risk.
Enhanced environmental resistance makes the module suitable for agricultural installations (barns, farms) and coastal locations, where aggressive conditions quickly degrade cheaper frame constructions.
Heckert Solar has operated since 1992 and manufactures in Germany, which combined with the local warranty reduces service-availability risk compared to less established peer brands like Zonergy or SunKean.
In November 2025 Heckert Solar unveiled a new TOPCon module rated up to 480Wp, suggesting the ZEUS 1.1 Performance 460Wp series may soon be succeeded by a higher-output model - worth considering for long-term series availability planning.
- Efficiency of 23.0% matches the TOPCon 450-500W median
- 230.2 W/m² power density - 5.0 W/m² more than TOPCon 450-500W median (225.2 W/m²), more power per roof area
- At -0.28%/°C, hot weather performance is typical for TOPCon 450-500W panels
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
- In the top 14% for efficiency among all TOPCon panels
Specifications
Datasheet charts
Measured curves published by Heckert Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 460 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
Found 1402 panels of the same or similar size to this one, within ±10 mm. See them here Found 1432 panels of the same or similar size to this one, within ±25 mm. See them here Found 3651 panels of the same or similar size to this one, within ±50 mm. See them here Found 3999 panels of the same or similar size to this one, within ±100 mm. See them here
About the ZEUS 1.1 Performance series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.