This research aimed to investigate whether online problem based learning (PBL) approach to teach
renewable energy topic improves students’ behaviour towards energy conservation. A renewable energy
online problem based learning (REePBaL) instruction package was developed based on the theory of
constructivism and adaptation of the online learning model. This study employed a single group
quasi-experimental design to ascertain the changed in students’ behaviour towards energy
conservation after underwent the intervention. The study involved 48 secondary school students in a
Malaysian public school. ANOVA Repeated Measure technique was employed in order to compare scores of
students’ behaviour towards energy conservation before and after the intervention. Based on the
finding, students’ behaviour towards energy conservation improved after the intervention.