Total amount of domestic energy sources was 3.7 million ton of oil equivalent (toe) (155 PJ= petajoule), which is by 5% more than in 2019, the statistics agency said. In the structure of supplied energy in 2020, petroleum products prevailed with 29%, followed by nuclear energy with 25%, renewable energy sources (including hydropower) with 19%, coal with 16% and natural gas with 11%.