EPFL creates a solar cooker with solid potential in Switzerland

The solar cooker and authors of the study on the roof of their lab. © Alain Herz
The solar cooker and authors of the study on the roof of their lab. © Alain Herzog / EPFL
EPFL scientists have developed a glass-paneled solar cooker that delivers exceptional performance. Their patented design can operate an average of 155 days a year in Switzerland's cloudiest regions and up to 240 days in its sunniest. Solar cookers - or solar-powered ovens - can be used to cook foods at low temperatures (60-120°C) for anywhere from 30 minutes up to four hours. This makes them perfect for a range of dishes, such as potatoes, vegetables, rice, stews and even cupcakes. EPFL scientists have been working on an enhanced version of the conventional solar cooker since 2018. In research that appeared in Solar Energy, the scientists show how their design can operate in Switzerland's sunniest areas, such as Valais Canton, for 240 days per year - or two thirds of the year. And in the country's cloudiest areas (such as Zurich), it can operate for 155 days per year, a figure that surprised even the researchers.
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