Energy use contributes 79% to total greenhouse gas emissions in Slovenia. The biggest sources of emissions are electricity and heat production and transport. With the introduction of the EU Greenhouse Gas Emissions Trading Scheme (EU-ETS) Member States targets for GHG's covered only emissions from nonETS sources. Transport is by far the largest source of on nonETS emissions in Slovenia with 47%, while  emissions from energy use contribute 73%. The 2020 target has been achieved. Target for the following years are significantly more ambitious.

The export of waste from Slovenia decreased in 2020, for the first time after ten years of growth. We exported around 340 thousand tonnes of waste, mainly to Austria and Hungary. The import of waste also declined for the first time in 2020, we imported around 61 thousand tonnes of waste.

The results of the Slovenian Energy Efficiency Survey (REUS) 2019 show that over three quarters of all households decrease their greenhouse gas emissions by walking short distances, about half of them travel by bike, 1 in 7 uses public transport and 1 in 8  uses car sharing. Seven out of ten households were willing to combine their personal vehicle with other forms of transportation in their daily travel.

Domestic material consumption amounted to almost 28 million tonnes (13,1 million tonnes per capita) in 2020 and was 2,6% lower than in 2019. The amount of biomass utilized decreased by 1,5% compared to 2019, also  the amount of mineral resources exploitation by 1,5%. The amount of used fossil energy  increased by 1,5% compared to 2019. In 2020, the import to Slovenia was 3,3 million tonnes higher than the export from Slovenia.

In 2020, CO₂ intensity in the commercial and institutional sector increased further compared to the previous year, to 33 t CO₂/million EUR1995, and lagged 0.7 percentage points behind the annual target value. The 2020 target was thus not achieved which is due to a 3.8% reduction in value added caused by the implementation of measures for preventing the spread of the SARS-CoV-2 virus. In comparison to 2010, the intensity was 55% lower.