By 2021, the implementation of energy efficiency (EE) and renewable energy source (RES) measures in the public sector resulted in a cumulative energy savings of 255 GWh, and the cumulative CO₂ emissions reduction was 63 kt. The values of both indicators thus still lagged behind the 2020 target values, which is largely due to the insufficient intensity of investments in 2016 and 2017. In 2022, according to currently available data, energy savings of 33 GWh were achieved, and the CO₂ emissions reduction was 7.4 kt.

Phytoplankton biomass, expressed as chlorophyll a concentration, reflects nutrient loading in the marine environment. Chlorophyll a concentrations shows a trend towards improvement in the status of the Slovenian sea, as the ecological status has been assessed as high or good over the last period.

Deadwood is an important animal and plant habitat that contributes to the biodiversity of forest ecosystems. According to Slovenia Forest Service data, the volume of standing and fallen trees without stumps and branches in 2022 was 21.3 m³/ha, which represented approximately 6% of the entire wood stock of forest stands. In virgin forests, however, the deadwood volume can be even several dozen times greater.

The quality of bathing water along the Slovenian coast is excellent, which ranks Slovenia at the top among the EU countries.

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.