ABSTRACT
A traditional energy systems model cannot assess the actual market of Gorj County, Romania, yet now that a transition to a renewable energy system is under serious consideration, it provides classic energy but causes pollution and affects human health implicitly. Energy systems modeling is changing by various methods addressing these challenges, and it describes how existing models and well-established models are adapting. As a result, future energy systems will implement the principles of sustainable development and environmental protection. Renewable energy can be highly variable in time, and energy demand may become much more actively managed in future energy systems with possibilities for creating new alternative economic sectors. In conclusion, with their rising importance, resolving time and space becomes important to accurately answer questions about the energy system in Gorj, Romania, to reevaluate from the point of view of the environment and human health.