In 2023, 65% of the population was connected to municipal wastewater treatment systems with secondary or tertiary treatment, which do not produce GHG emissions. Compared to the previous year, the share increased slightly, and compared to 2017, it rose by 3.5 percentage points.

In 2023, the share of RES in transport, after a significant drop in 2022, increased again and amounted to 10%. With this, it was 0.7 percentage points behind the non-binding 2023 target from the National Energy and Climate Plan (NECP).

From 2012 to 2023, the installed capacity of the systems for the production of electricity from RES has increased by 78,5%. Almost two-thirds of that increase, 51,2%, was achieved in the last four years. The indicator is currently on a trajectory of achieving the indicative targets until 2030 set in the National Energy and Climate Plan (NECP).

Energy efficiency in industry improved significantly between 2005 and 2023, with a 43% increase in 2023 compared to 2005. The chemical industry, machinery and equipment manufacturing, non-ferrous metals, and paper manufacturing contributed the most to the improvement, while steel production and non-metallic mineral products contributed the least.

Slovenia’s import dependence has been lower in recent years, amounting to 48% in 2023. Further increases in energy efficiency, the use of renewable sources, and the diversification of supply sources are essential. Slovenia is completely import-dependent for liquid fuels and natural gas. With regard to natural gas, Slovenia is import-dependent on two countries, Austria and Algeria. In the past, gas reaching Austria mostly came from Russia, but in recent years the supply structure has become more diversified due to the war and sanctions.