Solar cooker
device which uses the energy of direct sunlight to heat, cook or pasteurise drink and other food materials
A solar cooker, also known as a solar oven, is a device which uses the energy of direct sunlight to heat, cook or pasteurize food and drinks. Many solar ovens currently available are relatively inexpensive, low-tech devices, although some are as powerful or as expensive as traditional stoves, and advanced, large scale solar cookers can cook for hundreds of people. Because these cookers consume no fuel and are free to operate, many nonprofit organizations and environmental campaigns are encouraging their use worldwide in order to help reduce fuel costs, climate change and air pollution, and to help slow down deforestation and desertification.
History
In ancient times, the use of solar energy was believed to have existed in civilizations amidst the Greeks, Romans and the Chinese, though not for cooking.
The first academic description of the principles of a solar cooker is by the Genevan geologist, meteorologist, physicist, and Alpine explorer Horace-Bénédict de Saussure, in 1767. The principle of cooking meals by sunlight was largely developed in the French Foreign Legion, in the 1870s.
Working principles
A mirrored surface with high specular reflection is used to concentrate light from the sun into a small cooking area. Depending on the geometry of the surface, sunlight could be concentrated by several orders of magnitude producing temperatures high enough to melt salt and metal. Such high temperatures are not really required for most household solar cooking applications. Solar cooking products are typically designed to achieve temperatures of 65 °C (150 °F) (baking temperatures) to 400 °C (750 °F) (grilling/searing temperatures) on a sunny day.
The public source identifies “Solar cooker” as device which uses the energy of direct sunlight to heat, cook or pasteurise drink and other food materials. This brief keeps that definition visible, then builds a research path around Solar, cooker and device.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q903682. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1767.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Solar cooker” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.