The Solar Cooker

The solar cooker I use is a Sunstove, available from Margaret Bennett . e mail at sunstove@iafrica.com.



This method of cooking is the only one which is totally free. It is extremely easy. Place the food in a black pot, place in the solar cooker which is facing the sun or facing north if you are going to leave it for a long time.
The Sunstove comes with a pot and an instruction booklet, including recipes. It is ideal for one pot cooking, stews, vegetables, rice, pap, mince dishes. It is not suitable for dishes requiring rapid boiling, eg pasta, frying or baking (except meringues)
A black pot is preferable, but not essential. The sunstove cooks even if there is only 30 minutes of sun per hour. Food needs to be put in the sun before 10am as that is the best time for cooking. It is also possible to place the food in the sun before work and leave the sunstove facing north. It will be ready by 2pm but still warm by 4pm. It might just need a bit of reheating later in the day.
Advantage of a solar cooker

1. Free energy
2. It is light and so portable and can be moved to where the sun is, or taken camping etc.
3. It is almost impossible to burn food.

Disadvantages of a solar cooker

1. The cooker only works when there is enough sunlight, therefore not at night and not in the rain. It cannot be used as the only source of cooking. It can only be an additional source of cooking and will always require a back-up. However, when it can be used it saves electricity or wood or other fuel.
2. Food left unattended for long periods can be stolen. (Of course if there are grannies in the community they can sit near all the solar cookers and guard the food and cookers)

General Guidelines

1. The sunstove is designed for a family of 4. It can take more than one pot but if cooking for a larger number of people it will be necessary to use more cookers.
2. For cooking fresh vegetables it is not necessary to add water. Food will cook in its own juice.
3. Food must be placed in the sun before 10am in the morning for best results.
4. (From Sunstove 2000 Booklet)(2)

a) You will need twice the normal cooking time or a bit longer
b) Stews and casseroles use less water.”
g) food will cook quicker in 2 smaller pots than one big one. Don’t leave a lot of airspace above your food.”

1. The pots will get extremely hot and the use of a pot holder or oven gloves is necessary for removing the pot from the solar cooker.

Temperatures reached by the Sun stove

Dec 29 2009                                    

Partly cloudy, Max 26°C                         
Time           Temp °C                                                                           

9.00	40
9.30	50
10.10	90
10.55	120
11.20	120
12.00	120

These were my two extremes. When there was 50% cloud cover the stove reached a maximum of 95°C, 25% cloud cover it reached a maximum of 110°C. Cooking with more than 50% cloud was not very successful and another source had to be used to complete the cooking.