Despite the fact that there is a large number of biogas plants built in Ethiopia, their contribution in reducing energy expenditure and increasing income has not been fully examined. Therefore, this study examined the impacts of biogas technology adoption on rural household energy expenditure in South Ethiopia. Data were collected from 246 sample households, 123 biogas adopters, and 123 nonadopters. Simple random and purposive sampling techniques were used to select sample households. For data analysis, propensity score matching and binary logistic regression models were used. The logistic regression results showed that access to credit (