Who adopted the desired behaviors and to what degree?:
“I love my stove so much, it cooks better and faster”
School stove teams built >550 clean stoves in 3 years, 98% in households that had previously used only 3 stone fires as their primary method of cooking.
By 12 months after building 44 % of households used only clean stoves with 51% of households occasionally still using 3 stone fires, citing lack of power for some traditional food and lack of space for big pots.
96 % preferred the new stoves; 50% cited less wood and 19% less smoke.
Only 3% still used only 3 stone fires
69% of householders had no criticisms of the new stoves.
At 12 months 85% of stoves appeared to be in regular use. 37% had damage but in 91% of cases it had been repaired showing people considered them worth fixing
There was a 13% drop in reported respiratory diseases in households that had had the stoves for more than 6 months
81% of householders heard of the stove opportunity through schools, and 19% from friends, neighbors, church etc.
How did you impact natural resource use and greenhouse gas emissions?:
Fuel consumption was measured by wood required to boil a liter of water. The stoves our children build use on average 30% less wood than 3 stone fires. Data show that an average sized 7-person rural Ugandan family uses 3,796 kg of wood per year.
81% of householders used the stoves > 7 times a week, 235 exclusively.
This level of use by approximately 446 families (81% of our sample) saved up to 564,339 Kg of wood per year.
Using a commercial emission-tester we showed the stoves cut smoke production, as measured by particulate emissions, by an average of 82% when compared to 3 stone fires.
Burning 1kg of wood produces an average of 1.8 kg of carbon dioxide. If we extrapolate the reduction in smoke to other emissions, we are potentially eliminating 2,498,892 kg of an important greenhouse gas per year.
These numbers do not take into account the vital role of trees in sequestering carbon. Less fuel use means less deforestation and each tree absorbs about 22kg carbon dioxide annually
What were some of the resulting co-benefits?:
Reduced fuel use means less deforestation, less time collecting wood and fewer harmful emissions. This positively impacts the environment, access to education, health, agriculture and food security, all of which potentially help economic development. Kibale National Park, a prime example of a mid altitude rain forest, is an important biodiversity hotspot. The only place in East Africa that is home to healthy populations of chimpanzees (>1400, the largest population in Uganda) and elephant (>400), it contains many other rare animals, birds and plants. Fewer Illegal incursions into the forest to gather wood result in reductions in associated activities harmful to the forest: snares, logging, transmissible diseases and deforestation. School children, especially girls, spend less time collecting wood, households report fewer respiratory problems and more time and resources are available for education.