In the past centuries, forest area has been increasing constantly after 2010; however, the rate of expansion has slowed down and remains relatively stable in recent years. Since 1875, when forests covered only 36% of the Slovenian territory, forest cover has increased to 58.5% in the year 2009 and rests stable today at 58.0 %. In terms of forest share, Slovenia ranks third among EU-28 countries, behind Sweden and Finland.

GHG emissions in industry decreased slightly in 2021 compared to the previous year. Since 2009, there has been no noticeable trend of decreasing GHG emissions in this sector.

GHG emissions in the ETS subsector of industry sector decreased for the third year in a row and were 4.2% lower than the previous year. GHG emissions in the non-ETS subsector of the industry sector increased by 5.5% in 2021 compared to the previous year. In 2021, the share of emissions from the ETS subsector was 57.4% of all emissions in industry sector, and the share of non-ETS emissions was 42.6%.

Energy efficiency in industry has improved significantly over the period 2005–2022, with a 39% increase. The sectors that have contributed the most to this were production of paper, machinery and equipment, chemical industry and production of non-ferrous metals, while the production of steel and non-metallic mineral products have contributed the least.

The share of renewable energy sources (RES) in the use of fuels in industry amounted to 11% in 2021, which was 0.7 percentage point behind the annual indicative target value. The 2021 indicative target was thus not achieved. In order to achieve the target of 30% of RES in the use of fuels in industry in 2030, the share of RES will have to increase by 19 percentage points or by about approximately 2 percentage points per year.

In 2021, 62% of the population was connected to the municipal wastewater treatment systems with secondary or tertiary treatment, which do not produce GHG emissions. Compared to the previous year, the share decreased by a small percentage point, moreover, the share has remained almost unchanged since 2017.