We have identified a few clean burning stoves types that are well suited to the communities in which we are working. Each stove type has reduced levels of both greenhouse gas emissions and pollutants harmful to people’s health.
LPG, wood-gas stoves, and good kerosene stoves (among other technologies) are recognised by the World Health Organisation as having the potential to dramatically improve the health of some 3 billion people who are still exposed to excessive indoor air pollution.
Of the stove options below, LPG stoves have become our current focus as they have proven to be far and away the technology of choice for the communities we are working with. The other options remain available however for families wishing to access them.
1. LPG stoves
There are several benefits that come from using LPG (gas) stoves. They are the most efficient type of stove available, the most convenient to use, and generate the lowest levels of indoor air pollution. Many households in the region use LPG, however the large up-front cost of the gas cylinder and stove generally put them well beyond the reach of the poor. Carbon offsets can make LPG stoves a real option for those who would otherwise be unable to afford them.
2. Wood-gas stoves
These stoves can use any kind of dry chunky biomass as a fuel (such as coconut shells, dung and carpentry waste briquettes etc.) But these are gas burning stoves, since instead of burning the biomass in one step, it is first gasified, and then the gas is burnt.
Once the stove has finished producing gas from the biomass, charcoal remains in the bottom of the stove. The charcoal can then be emptied into a charcoal stove for continued cooking. Alternatively it can be saved and used later in the Sarai cooking system (see below). For more information on wood-gas stoves you can download a report here (2.0 MB)
3. Sarai cooking system
The Sarai cooking system is a highly efficient, non-pressurised cooker in which charcoal is used as fuel. It has been developed by Appropriate Rural Technology Institute (ARTI). The system takes three pots, so that three items can be cooked simultaneously. It operates on the combination of principles of steam cooking and retained heat cooking, and has been hailed as one of the cleanest ways of using charcoal for household cooking. These can be used along with a wood-gas stove. When the charcoal produced by a wood-gas stove is used in the Sarai system it is an extremely efficient way to use biomass as a fuel, and overall emits very low carbon emissions..