Geothermal energy is a renewable energy source that comes from heat within the Earth. The Republic of Srpska has areas with high geothermal potential, especially in the northern regions. Different temperatures of geothermal fluids can be used for various purposes, like electricity production or direct use. The chemical composition of thermal waters is important for exploring and using geothermal energy. Despite having good geothermal properties, the Republic of Srpska is not utilizing this resource effectively. It is crucial to consider geothermal energy more seriously in the future for a sustainable energy strategy.