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.

In Slovenia, forests have been growing in terms of growing stock and increment for decades. They have increased by more than 140% over the last 70 years. In addition to natural conditions, harvesting depends on socioeconomic factors, and recently on the occurrence of natural disasters (windbreaks, icebreakers) and bark beetles outbreaks. By 2014, the felling accounted for about 50% of the increment. After the ice storm in 2014, it increased substantially and accounted for 60 to 75% of the total increment of conifers and deciduous trees.

Regarding the forest area, deforestation accounts for an insignificant share. The average of the last ten years is approximately 405 ha (350–550 ha per year) and thus does not represent a significant factor in forest cover changes. Until 2008, most deforestation is a result of infrastructure facilities construction. In 2008, the unprecedented increase in deforestation for agricultural purposes occurred. The increase was due to the amendment to the Forest Act, which subject to the conditions allows the issuance of an authorisation for deforestation for agricultural purposes up to 0.5 ha.

Forests in Slovenia are relatively well preserved, especially in terms of the diversity of the natural tree species composition and the vertical and horizontal stand structure. The share of preserved forests exceeds 50%. Heavily modified, mostly forests where natural tree species are altered with spruce, and altered forests make up just over a tenth of all forests.

Inland bathing water quality in Slovenia is good and comparable with bathing water quality in other European countries.