The acceleration of metropolitan city development toward economic growth has an impact on over-urbanization, energy scarcity, slum settlements, and environmental degradation. Slum settlements that are predominantly inhabited by the urban poor will require an increase in the productivity of economic enterprises through the empowerment process. This study aims to analyze (1) community empowerment functions as determinants of the use of renewable energy in handling slum settlement and (2) the effects of community empowerment, utilization of renewable energy, strengthening of institutional capacity, and productivity of economic enterprises on improving the quality of the slum settlement environment. The study approach used is a combination of qualitative–quantitative research. Data was obtained through observation, in-depth interviews, surveys, and documentation. The results of the study show that community empowerment, coupled with the use of renewable energy, strengthening institutional capacity, and community participation, contributes positively to increasing the productivity of economic enterprises and improving environmental quality toward sustainable management of slum settlements. The effect of economic empowerment, strengthening institutional capacity, and the use of renewable energy to improve environmental quality with a coefficient of determination of 78.5%. This study recommends socio-economic empowerment based on the use of renewable energy in the implementation of the Makasssar City toward environmental, economic sustainability and the creation of social cohesion.