Risen Energy launches 23.5% efficient anti-glare heterojunction solar module for sensitive sites

Chinese manufacturer Risen Energy has expanded its product portfolio with the release of a new Hyper-ion series heterojunction solar module. According to pv magazine India, the module is specifically engineered with a dual-layer optical design intended to significantly reduce sunlight glare during operation.

The company is targeting specialized markets where light reflection poses safety or aesthetic concerns, such as solar installations located near airports and within high-density residential areas. Low-glare modules are typically considered for such sites because reflected sunlight can distract pilots, drivers and neighbours.

The company says the product applies its work on glare testing standards to a commercial module.

Optical performance and standards

According to Risen Energy, tests by Germany's TÜV Rheinland showed a maximum daylight glare probability of 0.30, a metric used to quantify the likelihood of visual discomfort for observers. Such assessments are vital for developers seeking permits near transport hubs, where excessive light scatter can impair the vision of pilots or drivers. The company also reported a maximum glare luminance of 3,463.94 cd/m² and a specular reflectance reaching as low as 0.85%. In the solar industry, reducing specular reflection—the mirror-like bounce of light—is essential for integrating large-scale arrays into sensitive landscapes without creating hazardous "hot spots" of redirected sunlight.

The company says the design combines a micron-scale matte glass surface, made with a process it calls "nanocrystalline phase reconstruction," with technology to suppress internal reflections; it did not give further technical details. Matte surfaces generally scatter light rather than reflecting it in a concentrated beam. Beyond product development, Risen Energy serves as the principal drafting organization for the T/CPIA0119-2025 glare testing standard. Establishing such benchmarks provides the sector with a standardized framework for measuring light impact, helping investors and regulators compare hardware performance using objective, repeatable data. This standardization is a common evolution in mature energy markets, ensuring that specialized components meet safety requirements for critical infrastructure.

Technical specifications and power output

Performance metrics

Model Variant	Power Output (Front)	Conversion Efficiency	Open-circuit Voltage	Short-circuit Current	Bifacial Power (135 W/m² rear)
RSM132-8-710-730BHDG	710 W – 730 W	22.9% – 23.5%	50.01 V – 50.33 V	18.00 A – 18.38 A	796 W – 818 W

The RSM132-8-710-730BHDG module series utilizes five distinct power output tiers to balance raw energy production with high conversion efficiency. These figures represent the electrical potential of the heterojunction cells, which typically combine crystalline silicon with amorphous silicon layers to capture a broader spectrum of light. For developers, the open-circuit voltage and short-circuit current are vital for string sizing and inverter compatibility. High-current modules often require specific balance-of-system components to manage the thermal load and ensure electrical safety.

Because these modules feature a bifacial design, they generate additional energy from light reaching the rear glass. When accounting for a rear-side irradiance of 135 W/m², the total power output scales significantly. This bifacial gain is particularly effective in sites with high albedo, such as gravel-covered industrial roofs or snowy environments. By maintaining efficiency levels up to 23.5%, these units maximize the energy density of a site, allowing investors to generate more kilowatt-hours from a smaller physical footprint. High-wattage modules like these reduce the total number of racks and cables needed, lowering the overall cost of solar hardware installation.

Physical build and durability

• The bifacial module consists of 132 heterojunction cells.
• Physical dimensions measure 2,384 mm × 1,303 mm × 33 mm, with a total weight of 37.5 kg.
• The build features 2 mm anti-glare front glass and 2 mm heat-strengthened rear glass.
• Structural integrity is provided by an anodized aluminum alloy frame.
• The unit supports a maximum system voltage of 1,500 V.
• Mechanical load capacity reaches 5,400 Pa on the front and 2,400 Pa on the rear.
• It operates within a temperature range of -40 C to 70 C, featuring a temperature coefficient for maximum power of -0.24%/C.

The dual-glass construction utilizes heat-strengthening to enhance the module's resilience against environmental stressors. In the solar industry, a 1,500 V system voltage rating is standard for utility-scale projects, as it allows for longer strings and reduced wiring costs. For developers, the mechanical load ratings are vital; a 5,400 Pa front load capacity typically ensures the panels can withstand heavy snow accumulation, while the rear rating manages wind uplift.

The low temperature coefficient is a significant metric for investors, as it dictates how much power is lost as the cells heat up during the day. Typically, heterojunction technology excels in warmer climates because it maintains higher output under thermal stress compared to standard crystalline modules. This thermal stability, combined with a broad operating temperature range, allows these units to function reliably in diverse geographic locations, from sub-zero environments to high-heat industrial zones.

Long-term performance guarantees

To protect project capital over extended operational lifetimes, Risen Energy backstops the hardware with a 15-year product warranty alongside a 30-year linear power warranty. Under these terms, the annual degradation rate is specified at 0.3% over the 30-year period. By the end of three decades in the field, the guaranteed power output remains at 90.3%.

For developers and institutional investors, long-term degradation rates directly alter financial models and project bankability. Solar cells naturally lose a small fraction of their conversion capacity each year due to environmental exposure and material aging. Standard industry warranties often account for higher annual losses, making low degradation figures a crucial factor in calculating the levelized cost of energy over a plant's lifecycle. A predictable output curve ensures that asset owners can accurately project power purchase agreement yields and debt service coverage ratios far into the future, mitigating financial risk for long-term holders of utility-scale assets.

What to watch

As the solar industry targets specialized deployment zones, commercial adoption of low-reflectivity technology near transportation hubs and urban centers will face close scrutiny from regulatory authorities. Air safety agencies and regional planning boards routinely require strict optical assessments before granting permits for installations adjacent to airport runways, highways, and residential corridors. The primary question moving forward is whether standardized testing metrics will gain widespread acceptance among municipal planners, streamlining project approvals and reducing pre-construction engineering costs.

Industry analysts will also monitor how asset owners evaluate low-degradation designs in long-term field conditions. As utility-scale off-takers demand greater predictability from power purchase agreements, the real-world operational data from high-efficiency infrastructure will heavily influence future procurement decisions and project financing terms.