Laser Recycling Method Cuts Solar Material Recovery Energy
New technique recovers silicon and silver with 96% less energy than thermal processes at the lab scale.
Updated on Oct. 22, 2026 in Energy
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Researchers have developed a laser-based method to recycle solar panels that recovers 97 percent of silicon and silver at laboratory scale. This research-stage technique consumes significantly less energy than conventional thermal recycling processes.
Why it matters
The method addresses the looming challenge of disposing of millions of solar panels as they reach the end of their service life. By efficiently salvaging high-value materials, it reduces the industrial demand for newly mined silver, which accounted for 25 percent of global supply in 2024.
The process requires less than 1 kilowatt hour of electricity per module, a 96 percent reduction in energy compared to the 25 kilowatt hours used in thermal recycling. It delivers a 97 percent recovery yield for silicon and silver, with the latter reaching 99.7 percent purity.
The details
The system uses nanosecond pulses of green or near-infrared light to break the bond between the solar cell and its protective encapsulant, avoiding the need for acid etching. By firing through the module's transparent front, the laser targets the cell surface and strips away the silicon nitride anti-reflective coating. Following this laser pass, the process includes a single wet chemical cleanup step to isolate the high-value materials in a form that avoids the contamination associated with mechanical shredding.
Timeline
2024: Solar panel manufacturing utilized nearly 25 percent of the world's newly mined silver.
2030: Europe expects to face a substantial wave of decommissioned solar modules.
The Tech Race
The development represents a departure from mechanical shredding methods that currently degrade the quality of reclaimed silicon. It positions itself as a more energy-efficient alternative to existing thermal processes that consume 25 times more electricity per module.
This technology remains in the research phase and does not currently impact commercial recycling workflows or panel disposal costs. Its adoption will depend on how quickly it can scale to process the large volumes of retired panels expected in Europe by 2030.
The takeaway
This laser-based approach offers a potential pathway to stabilize the circular economy for solar hardware by minimizing material contamination. Watch for future laboratory validation studies that move the process toward high-speed, industrial-grade throughput for multi-design module types.
Further reading
Explore deeper insights into renewable hardware infrastructure in our Energy section.
Source note: This article includes information reported by Ecoportal.
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