SESI mainly undertakes the following type of activities:
- Information dissemination on a variety of topical issues of growing interest to the Renewable Energy community
- Expanding the existing membership base
- Interaction with the International Solar Energy Society for possible initiation of any joint activities
- Coordination with the regional and local chapters of SESI for possible support and cooperation
- Recognition of the leading lights of the day in the entire area of RE
- Hosting of an International Conference on Renewable Energy better known as ICORE annually
- Conducts the meetings of SESI Governing Council & Annual General Meetings of SESI Members
- Publication of SESI Journal, a bi-annual technical journal containing papers on renewable energy utilization, technical notes and other items of interest of those involved in renewable energy research and development.
- Publication of a monthly news letter, namely the SESI News Letter
- Organization of one–day workshops on selected topics
- Organization of the International Congress on Renewable Energy once in a year, where numerous scientific and technical papers are presented and discussed
- Publication of the proceedings of the Annual Convention