SMRTR Science & EngineeringOct 6, 2025Interesting Engineering

World’s first solar furnaces unveiled to recycle luxury Swiss watch scrap steel

SMRTR summary

Swiss company Panatere launched the world's first solar furnaces that use concentrated sunlight to melt luxury watch and medical device steel scraps, reaching temperatures up to 3,632°F without fossil fuels. The technology could reduce carbon emissions by 165 times compared to conventional steel recycling when full-scale production begins in 2028.

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