Solar Cooking
Last edited: 31 May 2018      

Yuko Tomioka has founded the NGO, Niconet Tsukuba in Japan to promote solar cooking, by building on her six years of experience with solar cookers. Through the use of her blog, Solar Cookers Info, she is helping others in Japan to have better access to available information.


Fumi Sakurai, with Niconet Tsukuba, introduces solar cooking in Madagascar with the Sun Peace solar cooker.

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  • November 2012: Niconet Tsukuba has been introducing solar cookers to local citizens in Japan to increase people’s awareness of environmental and global issues, as well as to make small changes from their fossil-fuel-centered lifestyles to eco-friendly ones. Our programs are usually performed in an informal and relaxed manner, by our motto “Niconet’s 3E = Enjoy, Environment, and Eating.” Solar cooking is, in fact, effective for promoting communication with others. In 2011 -2012, we worked with the faculty of a local university to conduct an analysis on the efficiency of the Sun Peace solar cooker which was developed by our member Yuko Tomioka, by using thermo-graphic devices. We plan to include the results in our Solar cooking recipe booklet, which will be available on the web this year. In recent years, we also have focused on hand-made “retained heat cookers”. We introduced that newspaper as an effective material for insulating. While we are mainly active in the local area in Japan, some members are also active in other countries. Our member Fumi Sakurai stayed in Madagascar for two years, where serious deforestation is evident. She introduced villagers to the solar cooker Sun Peace. This solar cooker is easy to make because it does not require measurement. She suggested to some key persons in villages to use aluminum sheets of used snack packages for reflective material. It was found to work successfully in the sun-rich climate. Some villagers who learned how to make/use solar cookers became “teachers” and started to share the skills with others. In Japan, introducing such information is also useful for educational purposes.

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Yuko Tomioka