In 2022, 75% of energy supply in Slovenia was available to end-users, marking the highest level observed in the period. This percentage is largely influenced by the efficiency of electricity and heat production. In thermoelectric power plants and combined heat and power plants, almost half of the input energy was lost in 2022. Compared to the EU-27 countries, Slovenia ranked in the lower third. Electricity production from combined heat and power plants accounted for just over 6% of total production in Slovenia in 2021, with this share declining in recent years.

Energy efficiency in transport is improving, but too slowly, as it improved by only 11% in the period 2000-2019. Most of the energy in traffic is consumed in passenger cars, where efficiency has deteriorated.

In households, energy efficiency improved by 33% over the same period, mainly due to an improvement in energy efficiency for heating. Most energy in households is used to heat homes.

2024 was the second consecutive year with above-average water abundance, with no surface water drought observed in any season. However, over the past twenty years, hydrological droughts of surface waters have become both more frequent and more intense compared to previous periods, with greater variability between individual years. Very dry and very wet years now alternate with periods of hydrologically normal conditions. The drought intensity during the growing season has become more frequent, though it has been less severe in the past decade than in the previous one.

Frequency of groundwater drought is increasing in recent decades in alluvial aquifers. 8 out of 10 years with highest intensity of groundwater drought in period 1981-2024 occurred after year 2000. Groundwater droughts with higher intensity is characteristic for winter while milder groundwater droughts mostly occur at autumn. Groundwater drought intensity is also increasing seasonally with time between June and September when groundwater use is pronounced.

The frequency of agricultural drought in Slovenia has been increasing in recent decades. Since year 2000, natural disaster due to drought was declared seven times in Slovenia, the most severe of which occurred in 2003, 2012, 2013, 2017 and 2022. Drought keeps occurring with increasing intensity and in areas and seasons where there have not been problems in the past. An additional risk for drought damage in agriculture present rapidly developing droughts in summer (so-called "flash droughts"), which occur during heat waves.

Soil drought has a key impact on plant development and consequently on various industries (forestry, agriculture, …) . Indicators of the number of drought days and the duration of drought periods in individual years show an increase especially after 1990. Similarly, the analysis of the impact of the climate change up to 2100 shows that soil water deficits will increase in the future. The number and the duration of the droughts will increase.

The indicator “Public Attitude towards Energy Consumption” points to a stagnation in the self-assessment of final energy consumption in households. The share of households that estimated their energy consumption as low or very low was increasing between 2010 and 2019, but then the trend reversed, and by 2025 it had decreased by 6 percentage points, returning to a similar level as in 2010. A similar situation is observed with households considering more efficient energy use.

The indicator “Public Awareness on Energy Efficiency” shows that awareness of energy efficiency is high among Slovenian households, but the motivation for it has been changing significantly. Household decisions on energy efficiency have been increasingly driven by finances in recent years, while the environmental aspect is losing importance as an equivalent factor.

Large majority of registered passenger cars are still powered by conventional fuels (gasoline and diesel).  Although the total share of alternative-fuel vehicles tripled in the period from 2019 to 2025, it still remains very small.