Evaluation of the preference for and viability of clean cookstove adoption in rural Tanzania

Abstract

Background: Sustainable Development Goal (SDG) 7 calls for “universal access to affordable, reliable, modern energy services” for the 2.6 billion individuals lacking access to clean cooking fuels and stoves. Low- and middle-income countries are designing policies towards clean fuels, but often prioritize World Health Organization defined ‘clean’ fuels and stoves to urban areas. As clean solutions are explored, it remains unclear what rural households prefer as their clean alternative. Methods: This study conducted household energy surveys with main cooks across four villages in Shirati, Tanzania to understand rural household preferences within the viable clean fuels. Data analysis includes descriptive statistics and a generalized linear model with the Poisson family and log link to estimate prevalence ratios, all of which were conducted in Microsoft Excel and STATA 16.1. Results: The results revealed that while 83% of households (n = 187) stacked a combination of firewood, charcoal, liquified petroleum gas (LPG), and/or kerosene, 82% [95% Confidence Interval: 74%, 89%] of households stated a preference to use LPG. We found that aggregate expenditure on LPG was less than daily purchases of charcoal and firewood. Our analysis found that all villages had a higher prevalence of stacking firewood, charcoal, and LPG, than areas further from the main trading center. Both areas with trading posts had a lower prevalence of using only firewood. Conclusions: Household preference should be systematically incorporated into clean cooking policy decisions. Our results imply that LPG should not be pursued only in urban contexts. We discuss how preference affect adoption and the need to include user preferences to meet universal clean cooking access (SDG 7).