The present study aimed to explore the intention of traditional ranchers to use biogas in rural areas of Iran conducted among the traditional ranchers in the provinces of Fars, Khorasan Razavi, Kermanshah, and Golestan (N= 91,325). The sample, composed of 383 traditional ranchers, was taken by stratified random sampling. The measurement tool was a questionnaire whose face and content validity was confirmed by a panel of experts and its reliability was estimated in a pilot study by calculating Cronbach’s Alpha. The results showed that the indicators used to measure the research variables were consistent enough with the factor structure and theoretical framework of the research. It was found that normative processes had a significant positive impact on the habitual processes and intention of the traditional ranchers. Also, the effect of situational influences was positive and significant on normative processes, habitual processes, and the intention of the traditional ranchers. In addition, habitual processes and attitudes influenced intention to use biogas positively and significantly. It is concluded that the results have significant implications for the use of rigorous theoretical frameworks such as the Comprehensive Action Determination Model (CADM) when attempting to understand the intention to use biogas.
