Key features :

A solar oven  is a device which uses the energy of direct sunlight to heat, cook or pasteurize food or drink.

Many solar ovens nowdays in use are  inexpensive, low-tech devices, although some are as powerful or as expensive as traditional stoves .

 They are used in the situations where minimum fuel consumption is important, or the danger of accidental fires is high, and the health and environmental consequences of alternatives are severe .