Primary energy consumption amounted to 6,334 ktoe in 2020 and decreased for the third year in a row, this time by 5.5%. The decrease was due to the reduction in final energy consumption caused by the measures for preventing the spread of SARS-CoV-2 virus, while the electricity production increased compared to the previous year. The structure of primary energy use was in 2020 continued to be dominated by liquid fuels (29.6%), followed by nuclear energy (26.1%), renewable energy sources (18.6%), solid fuels (16%) and natural gas (11.5%). Compared to the 2020 target, primary energy consumption in 2020 was 11% lower; the binding target for 2020 has thus been achieved. Compared to 2005, the use of primary energy in both Slovenia and the EU-27 decreased by approximately 16%.