Home solar cooking is not catching up because they cook food very slowly and cooking has to be done outside the house. In rural areas people may not be able to afford it. They'd prefer wood, which they get free. read more
Such box cookers are available in India at a cost of Rs.1500 - Rs.2500 depending on the finish. There are two dozen manufacturers in India, mostly in the north - Delhi, Gujarat, Himachal, Madhya Pradesh, Maharashtra, Punjab, Uttar Pradesh and West Bengal. The solar box cooker takes 2-3 hours to cook food. read more
Some solar cookers, especially solar ovens, take longer to cook food than a conventional stove or oven. Using solar cookers may require food preparation start hours before the meal. However, it requires less hands-on time during the cooking, so this is often considered a reasonable trade-off. read more