Willingness to Pay for Green Electricity Derived from Rainwater Harvesting at University Community

The evaluation of public opinion toward different energy sources is crucial for planning future renewable energy development projects. This study provides an assessment of public knowledge, attitudes, and perceived behavioural control with regard to their financial support for rainwater hydroelectricity. Using a cross-sectional approach, this study collected data from 101 UniSZA community using a set of questionnaires. Kruskal–Wallis tests and regression analysis were the statistical tools employed in the analysis. The results showed that no sociodemographic factor was found to be significantly affecting the willingness to pay (WTP). Based on the outcomes of the regression analysis, perceived behavioural control was found to be the most significant factor influencing the WTP for rainwater hydroelectricity. Meanwhile, knowledge and attitudes had no effect on WTP. The results also show that, when it comes to their WTP, 51.5% of participants agreed, while 48.5% of participants disagreed somewhat or strongly disagree. This indicates that, although participants support the use of renewable energy sources, they will hesitate if the cost of using renewable energy is higher than the conventional sources. This study highlights the importance of identify the desire of community towards rainwater hydroelectricity prior to the project is implemented.