Abstract
The development of energy based on RES is an important element of the policy of sustainable development and maintaining energy security. The difficult situation in the energy sector is turning more and more countries towards alternative energy sources. The feasibility of obtaining energy from renewable sources is linked primarily to the resources that are also economical. The main advantage of geothermal waters is that they can be used to produce heat or electricity, regardless of the time of day or climatic conditions. Data from geological research allows us to conclude that both Ukraine and Poland have favorable conditions for the use of energy from low and medium temperature geothermal waters. Ukraine is also turning to the possibility of using geothermal energy to produce electricity. Examples highlighting the possibility of using the energy potential of geothermal waters in the Lviv region and the Czestochowa poviat were presented.