This study was carried out to determine the view of prospective teachers with regard to STEM education given in Science, Technology, Society and Environment course and the effects of STEM education on prospective teachers' attitudes towards renewable energy sources and awareness of environment problems. The study was carried out in 2014-2015 academic year with 76 prospective science teachers. In the study, mixed method research design, which employs qualitative and quantitative research methods together, has been used. As a data collection tool "Sensitivity to Environment Problems Scale", "Attitude Scale for Renewable Energy Resources" and "Semi-structured Interview Form" developed by the researcher were used. Data obtained as a result of content analysis were coded. As a result of analysis of the study, it was determined that prospective teachers' attitudes towards renewable energy resources were positively affected but there was no change in their level of awareness of environmental problems.