Air pollutant emissions have decreased in the period 2005−2020 to the levels that enable Slovenia achievement of its 2020 targets. But to reach 2030 targets additional decrease is needed. Reduction of emissions contributed to lower impact on ecosystems and human health, as emissions of pollutants that contribute to acidification, ozone precursors and particles, decreased by half compared to 2005.

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.

Primary energy consumption amounted to 6,470 ktoe in 2021 and increased by 2.7 % compared to the previous year. The increase was a result of an increase in the final energy consumption due to the economic recovery after the coronavirus pandemic and a colder year 2021, while the electricity production decreased compared to the previous year. Primary energy consumption was 258 ktoe (3.8%) lower than the indicative target value for 2021 from the currrent National Energy and Climate Plan (NECP), while it slightly lagged behind the annual indicative target from the proposal for the NECP update.

In 2019, renewables accounted for 16.9% of total energy consumption. The share is 0.2% higher in comparison to the previous year, only because of lower total energy consumption.

Energy prices increased in the period 2008-2012. In the same period, the most raised the price of the natural gas industry (almost 53 %), followed by price for natural gases for households by 38%, the price of heating oil, for household electricity, the price of petrol NMB 95, diesel D2, at least has raised the price of electricity for industry, for less than 6%.

Overall, taxes on energy products have alternated between decreasing and increasing over the period 2012-2022 (expressed in constant 2012 prices). With the exception of electricity for typical household consumers, where levies have been increasing over the period 2012-2016, taxation on other energy products has been gradually decreasing. Energy taxes were lower in 2022 compared to 2012. The only exception is the electricity tax for typical industrial consumers, where the direct tax burden increased mainly at the expense of contributions (EE, RES+CHP, CO2 tax).

It is estimated that in 2021, over €396 million in energy subsidies was allocated in Slovenia (or 356 € million when adjusted to constant prices in 2015). Incentives for environmentally harmful energy production from fossil fuels and the use of fossil fuels represented 26% of all energy subsidies in 2021, whereas this share was as high as 51% in 2015. Significant progress is observed in subsidizing production from renewable energy sources, CHP, and energy efficiency measures.

In Slovenia, in 2020 the external costs estimate of electricity production ranges from 0.8 - 2.8 € c2000 / kWh. Despite growing environmental awareness, the price of electricity still does not reflect all external costs. Due to incorrect price signals, which are the result of the current situation on the electricity markets, energy sources in Slovenia remain suboptimally used.

Slovenia's import dependence is not decreasing and is about 50%. In 2020 it was exceptionally lower than in previous years due to the epidemiological situation. The most problematic is the import dependency on gaseous fuels, as Slovenia is heavily dependent on fuel imports from Russia.

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.