Women and young women are major stakeholders in the renewable energy industry and yet their involvement in this field is still limited. One of the main barriers to their participation are inadequate education in science, technology, engineering and mathematics (STEM). Meanwhile, MENTARI has set up a demonstration project to install solar power plants for the two villages of Mata Redi and Mata Woga in Central Sumba, East Nusa Tenggara, and is also aiming to involve women and marginalised groups in all the activities and to train young people in solar PV systems and furniture making. This case study highlights the positive changes that emerged from the project, especially for the young women and men who participated in the training. We also offer some recommendations for both government and non-government organizations working in this sector, particularly in relation to involving young women in such projects and collaborating with local institutions.