Environmental indicators in Slovenia

Environmental indicators are based on graphs, maps and assessments and as such present environmental trends in Slovenia. The indicators represent one of the four pillars of our environmental reporting, and are prepared in accordance with the Environmental Protection Act. The Environmental Indicators in Slovenia website enables users to browse among 180 indicators. They are based on numerical data and they indicate the state, characteristics and trends of environmental development in Slovenia. They are prepared using a systematic approach based on data and monitoring, as shown in the information pyramid.

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In Slovenia, over 70% of the energy supply is available to end users. The share is by far the most affected by the efficiency of electricity and heat production.

In the production of electricity and heat in thermal power plants, less than half of the energy invested was lost in 2021. Compared to the EU-27 countries, Slovenia was in the bottom third of countries.

In 2020, the production of electricity from CHP accounted for just under 7% of the total production in Slovenia.



In Slovenia, built-up areas continue to increase, representing 5.7% of the land use structure in 2023. In the period 2019-2023 built-up areas were predominantly spread to grasslands (42%), forest (18.6%) and the category other (16.1%), with the total built-up area increasing by 1,618.9 ha over this period. Existing data sources in Slovenia have recently made it possible to evaluate the actual loss of land to development.


In Slovenia, the average Corg stocks in the treated agricultural lands (KZ) to a depth of 30 cm was 92.9 t/ha, with the highest in the soils of marsh meadows – 197.0 t/ha. In soils with extensive use, including extensive orchards (ES), permanent grasslands (TR), land undergoing afforestation (ZR), and KZ overgrown with trees and shrubs (DG), Corg stocks ranged from 92.2 to 109.4 t/ha. Corg stocks in vineyard soils (VI), intensive orchards (IS), and arable lands (NJ) ranged from 60.0 to 92.7 t/ha.


Soil erosion is a natural geomorphic process of soil particle detachment and transport. Due to human activities, it can be significantly accelerated, reaching levels much higher than in natural conditions. Erosion (water, wind, and tillage erosion) remains the most significant threat to soils in many regions of the world. Measuring erosion is typically done under controlled conditions on standardized test plots, which is a time-consuming, costly, and organizationally demanding process.


Changes in the size structure show that concentration processes are continuing regarding the extent of the agricultural land, while in the area of the livestock production these processes have slowed down. Nevertheless, due to its small size on average, the competitiveness of Slovenian farms is low compared to the EU–27 countries.


According to estimates, most of the food in Slovenia is imported. The share of food of domestic origin is decreasing in the long term. In 2022, only about one fifth of food is of domestic origin. Before 2004, less than half of the available food was imported, while after Slovenia’s accession to the EU, both import and export of food increased significantly. Exports increased mainly at the expense of unprocessed products, while imports increased at the expense of processed products.