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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Slovenia has a fairly high level of energy intensity that is decreasing, especially in the last few years. Average yearly decrease rate in the period 2005-2021 was 2.7 %. Compared to EU-27 Slovenia had 37 % higher intensity in 2020, being 11 % points lower than in 2005.


The response of agricultural holdings to the agricultural policy and favourable market opportunities, which support the spreading of organic farming has been growing every year. The area intended for organic farming has increased in the period 1999–2022 from 2,400 ha to 53,202 ha, or from 0.5% to 11.1% of the total utilised agricultural area. The structure of agricultural land with organic farming is strongly dominated by grassland (79% in 2022), which shows that livestock farms more frequently convert to organic farming.


As of 2022, the Potentially Contaminated Sites (PCS) inventory in Slovenia includes 671 sites that are a potential source of pollution due to past or present activities. With the establishment of the first database, Slovenia has taken the first of six steps toward systematic management and monitoring of contaminated sites. An analysis of the degree of environmental sensitivity and threat to human health due to potential contamination revealed that priority treatment is urgent for 35 sites and very urgent for 196 sites.


In the period 1992–2022 the consumption of mineral fertilizers in Slovenia was reduced by 38%. In the same period the consumption of plant nutrients (N, P2O5, K2O) per hectare of utilized agricultural area also reduced by 30%. The average consumption per hectare of utilized agricultural area was 61 kg N, 25 kg P2O5 and 31 kg K2O. In the period 2012–2019 the average consumption of nitrogen in Slovenia was lower (57 kg N/ha) than in EU member states (63 kg N/ha).


The emission of primary particles, smaller than 10 µm (PM10), particles smaller than 2.5 µm (PM2.5) and all total suspended particles (TSP) have decreased in the period 2000 – 2021 in Slovenia by 21 %, 29 % and 20 %. The main source of emissions of particulate matter are households, mainly due to use of biomass for domestic heating.


Emissions of total ozone precursors in Slovenia decreased by 62 % in the period 1990 to 2021. Emissions of nitrogen oxides decreased by 66 %, carbon monoxide by 70 %, non-methane volatile organic compounds by 54 % and methane by 26 %. The reason is mainly the introduction of more stringent emission standards for motor vehicles. This measure contributed to a significant reduction in emissions of nitrogen oxides and carbon dioxide from road transport which is the main source of ozone precursors.