STEMS education and learners’ competency and quality-based teaching, including scientific competence, have attracted great interest from many teachers and researchers. Is it possible to develop scientific capability through STEMS education? To address this question, the research study proposed a lesson plan to teach the topic “Renewable Energy”(Physics 11). The author employed a combination of literature review methods, expert opinion collection, and mathematical statistics. With 10 questions designed based on a 5-point Likert scale, 82 collected responses ensured the conditions for analysis. The results showed that the lesson plan on the topic “Renewable Energy”, which consists of 2 periods with 8 activities, was considered as a STEMS lesson and thus helped the students develop their scientific capability. The research serves as a reference for school teachers and experts to consult and deploy extensively with other topics and other subjects.