Our stove users save money by reducing fuel expenditures from 33% to 17%, a savings of $.97 per day in firewood costs. Over the anticipated 5-year lifespan of the stove, this savings amounts to $1,770 per household. We've estimated that the collective firewood savings created by all the stoves distributed so far is more than $79 million.
In 2013 we partnered with UC Berkeley’s Center for Effective Global Action to conduct a rigorous evaluation of stove use by installing heat sensors on 180 stoves and continuously monitored use for several months. The study showed very promising results, indicating that stove owners utilized their stove for an average of an hour and a half each day.