Objective: This study aims to demonstrate the influencing factors of solar technology acceptance by enterprises in the Mekong Delta, Vietnam.

Method: The research data were collected using the quota sampling method, with a sample size of 292 active businesses in the Mekong Delta: Can Tho City (80 enterprises), Long An Province (77 enterprises), Tien Giang Province (68 enterprises), and Kien Giang Province (67 enterprises). The collected data will be processed using SPSS and AMOS software. The quantitative analyses employed to test the research hypotheses include a reliability test by Cronbach's alpha, exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and structural equation modeling (SEM).

Results: The study has identified five factors that positively influence the intention to use solar technology by businesses, including effort expectancy, performance expectancy, social influence, hedonic motivation, and facilitating conditions. Additionally, the study has shown the significant and decisive impact of intention to use on the behavior of using solar technology.

Conclusions: The research findings further validate the suitability of the UTAUT in the field of renewable energy technology. The research results will provide important scientific materials for business managers in the solar energy field and researchers studying the acceptance of solar energy technology.