1. Introduction The observed dynamic economic development generates increasing energy consumption in various forms. According to Eurostat data, in 2021, energy from petroleum products accounted for the largest percentage (up to 34.6%) of all types of energy used. It is followed by natural gas (23.2%), with almost identical consumption to electricity (22.8%). The share of renewable energy sources is still growing, but in 2021, they accounted for only 11.8% of the share.