Environmental problems have become a priority research area on a global scale due to their multifaceted impacts on individual and public health, the continuity of ecological systems, and sustainable economic growth and development. Indicators such as carbon dioxide emissions and ecological footprint are traditionally widely used in evaluating environmental performance. These indicators primarily reflect the consumption pressure on natural resources and the environmental demand dimension. Therefore, comprehensive assessment of environmental sustainability requires measures that also consider the regeneration capacity of natural resources and the ecological supply aspect. This study utilizes the load capacity factor, an environmental quality indicator calculated by dividing biological capacity by ecological footprint. The study analyzes the relationships between renewable energy consumption, healthcare expenditures, economic growth, and the load capacity factor in Turkey for the period 1990–2022 using the A-ARDL method. The findings indicate the existence of a long-term cointegration relationship between the variables. Increases in renewable energy consumption and healthcare expenditures positively affect the load capacity factor, while increases in economic growth negatively affect it.