What are the disadvantages of using a solar cooker ? Are there places where solar cookers would have limited utility ?

Explanation

Advantages of using solar cooker :
1. It does not produce any pollution.
2. Its working cost is virtually zero.
3. it saves fuel.
4. Since the food is cooked at comparatively low temperature, hence nutrients of food are not destroyed during cooking.
5. More than one item can be cooked at the same time.
6. In India we have ample sun shine.
Limitations :
1. Solar energy is not available in sufficient amount all the times. It cannot be used at night time and on cloudy days.
2. Direction of solar cooker has to be changed time and again.
3. it cannot be used for frying purpose.
4. It cannot cook chapatis.
Solar cookers cannot be used at places where there is not sufficient amount of sun shine. It cannot be used in inner rooms on ground floor.