A model for every use: efficient stoves

The newest invention is the Rocket Stove. With its elbow-shaped combustion chamber, the do-it-yourself model out of clay and straw, metal or bricks reduces energy use by up to 80 percent, and cuts the amount of firewood used by anywhere from 40 to 80 percent. It is also almost completely smoke-free. Families use the smaller models, and larger ones are being used in school cafeterias or small restaurants. Depending on the model, size, and country, prices of Rocket Stoves are anywhere from three to 15 euros (four to 20 US dollars) per household. A cafeteria-sized stove costs between 90 and 200 euros.

An example of a special regional use is the round Mirt stove from Ethiopia, which consists of a cement ring and a metal or clay stovetop. The region's traditional, round Injera bread is baked on the flat stovetop with a diameter of about 60 centimeters. Compared to an open fire, the Mirt stove reduces firewood use by 50 percent, and is priced at about four to six euros.

The Vesto stove, which burns different organic matter, is mainly sold in South America. It's industrially produced, and costs around 25 euros. The Jiko charcoal stove, developed in Kenya, specializes in the burning of charcoal. Today, it's available in many African countries at a cost of between three and 10 euros. It cuts charcoal use by 50 percent.

The Upesi clay oven, also known as Mandaleo, is a particularly simple construction that costs about one euro, meaning even the poorest people can afford it. In comparison to an open fire, it saves 50 percent of firewood. Food warmers are also being used more frequently. These are bags or baskets which are lined with naturally insulating materials such as dried banana leaves, where food can be placed after it's been cooked to stay warm - another way of saving energy.

Author: Torsten Schaefer (dc)
Editor: Mark Mattox